ZIMO MX1 User manual

COMMAND STATION MX1, MX1HS, MX1EC Page 1
INSTRUCTION MANUAL EDITION
Old editions (old format) ----- to 2006 04 11
NEW manual format November 2006, SW-Version 3.00 ----- 2006 11 05
STANDARD HIGH OUTPUT ECONOMY
MX1 MX1HS MX1EC
Chapter
1. Introduction......................................................................................................................................................................2
2. Overview..........................................................................................................................................................................2
3. Specifications ..................................................................................................................................................................2
4. Power supply – external transformer...............................................................................................................................4
5. Connecting cabs (throttles)..............................................................................................................................................4
6. Connecting the main and programming track..................................................................................................................4
7. Controls and applications................................................................................................................................................5
8. The DIP switches (back of MX1) .....................................................................................................................................6
9. The auxiliary inputs (shuttle, AOS… )..............................................................................................................................7
10. The CONTROL bus (booster connection)......................................................................................................................8
11. The Configuration Variables..........................................................................................................................................9
12. MX1HS as Booster-Unit...............................................................................................................................................11
13. Fuses...........................................................................................................................................................................11
14. SOFTWARE Update....................................................................................................................................................12
15. The software ZST (ZIMO Service Tool).......................................................................................................................12
16. AOS – Automatic Operating Sequences......................................................................................................................13
17. The “old” (ASCII-oriented) Interface.............................................................................................................................15
18. The “new” binary Interface Protocol.............................................................................................................................18
IMPORTANT NOTES to SOFTWARE and SOFTWARE UPDATES:
Software that determines the characteristics and functions of this product is stored in a FLASH-
EPROM.
Current software is available at no charge from www.zimo.at (UPDATES). The software can be in-
stalled with the help of the program “ZST” (Zimo Service Tool) but also at the DOS level with the
program LOADHEX. The ZST program is available for download from the above web site at no
charge.
Updates can also be performed by exchanging the EPROM with a new one from ZIMO for a mini-
mum charge of EUR 10.00 to EUR 15.00 (handling and burning of the chip). An additional EUR
10.00 will be charged if the old EPROM is not sent back. More information at: www.zimo.at .
Some functions may depend on the software level of other components. It is therefore recommended
to use matching software in the different ZIMO components.
ZIMO cannot guarantee that future functions (including the ones covered in this manual) will be im-
plemented as planned or in the time frame suggested.

Page 2 COMMAND STATION MX1, MX1HS, MX1EC
1. Introduction
The command station is the central processing unit of a DCC system (according to NMRA definition it
is a combination of “command control station” and “power station”).
The command station uses the CAN bus cable to communicate with the cabs and if applicable with
accessory modules, track section modules and other modules.
The command station sends stabilized and short circuit protected power to the track, which also in-
cludes the control information for locomotive and accessory decoders in the standardized NMRA-
DCC format, the MOTOROLA data format or both (see below).
Control information and data formats . . .
“Data format” indicates the kind of data transmission used to send information from control units (command sta-
tions, cabs…) to mobile decoders in locomotives or fixed decoders for switches or signals. The following data for-
mats are relevant:
DCC (Digital Command Control): this is a data format standardized by the NMRA (National Model Railroad Asso-
ciation) and is also used by DCC systems and decoders of other manufacturers like Lenz, ROCO, LGB, Digitrax,
NCE and others.
MOTOROLA: A data format used by Märklin under the name “Märklin digital”, “Delta” as well as Märklin's own
new “mfx”. All recently produced Märklin locomotives come with an appropriate decoder installed. Decoders operat-
ing with the MOTOROLA format can be controlled with a ZIMO system and if required simultaneously with DCC de-
coders.
Each data format can be selected with switches marked „DCC“ and "MOT" on the back side of the
command station. The version MX1EC is equipped with jumpers instead of switches. All command
stations are delivered with the DCC mode enabled and the MOT disabled.
It is recommended to enable only the data format that is actually being used! This improves the data
flow to the track: data for each engine is sent faster and repeated more often. Disabling the DCC
format in a MOTOROLA only set-up simplifies the handling and control: locomotive and turnout ad-
dresses can be entered in the cab without a prefix.
2. Overview
The command station is available in 3 versions..
MX1
The
standard com-
mand station
Up to 8A of track power; separate outputs for main and programming track
(may be part of layout). 2 CAN bus sockets, RS232 interface, 8 inputs for
automated shuttle operations, AOS events, external panic button, 4-pin
control bus socket for the control and feedback of external boosters (other
brands are also suitable). 2-line LCD display (2 x 16 characters) for the dis-
play of volt and amp readings for both track outputs as well as CAN bus ac-
tivity, error messages, programming and AOS information and more.
MX1HS
The
high
output command
station
Up to 2 x 8A of track power at two equal track outputs, independently ad-
justable track voltage, parallel connection of both track outputs is possible
(16A); one output may serve as programming track. Otherwise identical to
MX1 with the same software; configurable with jumpers for the use as a
large booster MXBOO (as slave unit of another command station with 2 x
8A).
MX1EC
The
economy com-
mand station
Identical to the MX1 in terms of power (8A track power), processor and
memory capacity as well as software. Priced lower due to a simpler hous-
ing, simpler connections, LED chain instead of an LCD display for volt and
amp indications (an external 2 x 16 display is available as accessory). Only
one track output, which is used for the main or programming track.
3. Specifications
Transformer input: maximum voltage (~) .......................................................................... 28 V
Track outputs, adjustable power *** )........................................................................ 12 to 24 V
Main track output (“SCHIENE 1), max. power **) ................................................. 8 - 10 A ***)
Programming track output of the MX1 (“PROGRAMMIERGLEIS”) max. power ................. 3 A
Programming track output of the MX1HS (“SCHIENE 2”), max. power ............................. 8 A
Dimensions MX1, MX1HS (B x H x T, incl. rubber feet) ............................. 210 x 90 x 210 mm
Dimensions MX1EC (B x H x T, incl. rubber feet) ...................................... 210 x 60 x 210 mm
Weight ................................................ 1,5 kg (MX1) , 2 kg (MX1HS) , 1 kg (MX1EC)
*) In accordance with consumer protection laws, a maximum of 24V is allowed for toy applications; ZIMO products
are however not declared as toy and the command station can operate with up to 28V transformer input.
**) When using a transformer with a secondary output of 25V (i.e. ZIMO TRAFO25), the maximum track current of
8A is only available at a track voltage setting of no more than 20V. The achievable track power (current) will be less
with track voltages above 20V.
8A of power can be achieved with up to 24V on the track when using a 28V transformer.
***) ATTENTION: It is important to adhere to the allowable track voltage settings specified for the decoders in use,
especially when using third party decoders!

COMMAND STATION MX1, MX1HS, MX1EC Page 3
LED’s for
“TRAFO 2” (and “SCHIENE 2” (main track) )
TRAFO 1 (and “SCHIENE 1” (prog. Track)
on MX1HS
“”
Track voltage regulator
(12 to 24 V)
SCHIENE 2 SCHIENE 1
Main track Prog. Track
(nur MX1HS)
.
Contrast setting for
LCD Display
Track voltage regulator
(12 bis 24 V)
.
Trafo-Input (Single LED),
All other LED’s for track
voltage (green) and power
(yellow) indication

Page 4 COMMAND STATION MX1, MX1HS, MX1EC
4. Power supply – external transformer
ZIMO command stations do not have a direct mains connection. An external transformer must be
connected to the “TRAFO” terminal on the back panel. In order to fulfill local regulations use only ap-
proved transformers (i.e. UL or other applicable agencies).
The requirements for the transformer used (or each of the two transformers in the case of the
MX1HS) as the primary power supply are:
Rated output 24 to 28V, nominal power at least 50VA, preferably 100 to 200VA.
Commercially available model railroad transformers (or power packs) are not suitable because the
voltage is usually too low and load dependent and supply too little power. Transformers of up to 28V
are recommended for large-scale applications if track voltage of more than 20V is required!
Note to the „CAN bus“ (Cable from command station to cabs and other modules) . . .
Ready made CAN bus cables can be obtained from ZIMO in standard and custom length (see price list) but can
also be made by the end user; the required 6-conductor cable, connectors (package of 50) and the special mount-
ing pliers are also available from ZIMO.
Connecting several cabs to the CAN bus is in most applications problem free (up to 10 cabs or other modules on
the bus. With up to 50m total cable length and no more than 2 cabs at the end of the 50m cable, or no more than 5
at the end of a 20m cable)
If the number of cabs or the distance to the command station is higher, some threshold values and countermea-
sures need to be considered (terminating resistors, typically 150 to 330 Ohm between the center pins of the CAN
bus connector of the farthest module, contact ZIMO if needed !).
5. Connecting cabs (throttles)
All ZIMO command stations come equipped with two identical 6-pin RJ-12 CAN bus sockets (inter-
nally connected) that accepts 6-conductor can bus cables, which are used for the data transfer be-
tween the command station and cabs as well as other ZIMO products (accessory modules, track sec-
tion modules etc.).
Every ZIMO cab also contains the two CAN bus
sockets so that all cabs may be daisy-chained
without the use of any special distribution
boxes.
Instead of connecting all cabs with each other
(daisy-chain), a 6-conductor bus cable can be
installed on the layout with appropriate
distribution boxes to which cabs can be
connected where needed.
Trafo
24 V
to
28 V
Tra fo
24 V
to 28 V
Tra fo
24 V
to 28 V
2 Transformer
for MX1HS !
6. Connecting the main and programming
track
… to the standard command station MX1 ...
To main track
To programming track
The MX1 command station is equipped with two track output sockets.
•the output “MAIN”, to which the main track of the layout is
connected to. This output is rated at the full 8A.
•the output “PROG”, to which a section of track, isolated at
both ends from the rest of the layout track, is connected that
serves as the programming track for programming loco ad-
dresses (and CV’s) of locos equipped with a DCC decoder.
This could be a ZIMO decoder or decoders from other manu-
facturers such as Lenz, Roco etc. This output is limited to 3A.
Exceeding this limit turns the power to this output off and is
shown in the MX1 display with “UEP” - as opposed to “UES” af-
ter the main track output is turned off.
If no programming procedure is running, the programming track may be part of the layout and used
in the same way. Naturally, power on that track section is always limited to 3A. With the help of the
DIP switches on the back side of the command station the power can be further reduced (down to 1A
or even no load), which can be useful when testing a newly installed decoder to reduce the risk of
damage to the decoder in case of wiring errors.

COMMAND STATION MX1, MX1HS, MX1EC Page 5
If the programming track is part of the layout (main track) that allows locomotives to drive from the
main track on and off the programming track (both rails isolated) the polarity of the two has to be the
same for both (pin N, pin P) !
… to the high-output command station MX1HS ...
To mai n t r a c k
To programming track
(or second power district
of an MX1HS)
The MX1HS is equipped with two 8A rated outputs marked
SCHIENE 1 and SCHIENE 2, whereas the output SCHIENE 2 also
functions as the programming output “PROG” as soon as a pro-
gramming procedure is started with the cab or the computer.
Therefore, with a MX1HS the main track must be removed from the
output SCHIENE 2 = PROG and the programming track connected
instead, before any programming procedure is started in “service
mode”!
LEDs (green) for “TRAFO” input indicate
adequate voltage from transformer
(only one LED on Mx1 because only
one transformer is connected; two
LED’s on MX1HS because two
transformers are connected)
LEDs for “SCHIENE” (by-color LED’s, red/green)
Track power on
Track power off
(Most often due to short circuit)
green:
red:
After power-up:
Displays device type and the
software-version; self-test messages.
During normal operation:
Volt and Amp display for both track outputs
or short circuit displayed (UES, UEP),
CAN bus load in % (C:),
CAN bus error (E:).
Marking “SL”: Command station operates as booster
(all data format switches to OFF)
During decoder programming and read-outs (using
the cab):
Display of CV numbers and values (the MX1
display is easier to read than the MX2).
During other definition events (e.g.Autonomous
block control): Information help to support the
operator.
DCC, MOT, VAR
LED’s for
TRAFO 2, SCHIENE2,
TRAFO 1, SCHIENE 1
()MX1HS only
Adjust track voltage here
(12 24 V)
SCHIENE 2 SCHIENE 1
.
to
()MX1HS only
Contrast adjustment
for LCD Display
ATTENTION: Before proceeding with programming a locomotive,
make sure that the programming track is the only track connected to
the output SCHIENE 2 = PROG. If any part of the main track re-
mains connected, all locomotives on that track will also be re-
programmed!
The two outputs SCHIENE1 and SCHIENE 2 (except during pro-
gramming) supply power to two power districts of a layout. They can also be wired in parallel to cre-
ate one powerful district.
ATTENTION: Do not wire the two MX1HS outputs in parallel when track section modules MX9 are in
use on the layout!!
… to the economy command station MX1EC ...
The MX1EC has only one track output, which can be used for
either the main track or the programming track.
ATTENTION: Before any “service mode” programming proce-
dure (before the procedure is started with the cab or a com-
puter) with an MX1EC, the main track must be disconnected
from the track output and the programming track plugged in in-
stead! This can be accomplished with an external switch or by
switching the track connectors on the MX1EC.
If the main track remains connected by mistake during a pro-
gramming procedure, all locomotive and accessory decoders
will also be re-programmed!!
Possible protection procedure: See CV’s #31 - 38, “Enable
programming”!
The track polarity in principle is of no importance. However, if track section modules MX9 are
employed the polarity is important and the track output pin “P” must be connected to the rail that is
gapped for building track sections, while the “N” output pin is connected to the common uninterrupted
rail.
The diameter of the track supply wire must be adequate...
… otherwise speed and lights may fluctuate and in serious cases lead to communication breakdown,
but also…
…causes the wiring to overheat to the point that it catches fire, especially in case of parallel wired
outputs (high currents)!
It is recommended that a cable diameter of at least 0.75 mm2 (20 AWG); at least 1.5 mm2(14AWG)
for wires longer than 5m (15ft) is used. Larger layouts should be fitted with several drop feeders (@
every 5m) to prevent noticeable voltage drops along the track.
7. Controls and applications
… on the standard command station MX1 and high-output MX1HS ...
After connecting a transformer to the input connector “TRAFO” (or two transformers on a MX1HS),
the three green LED’s light up (or four green LED’s on the MX1HS).
At first, the LCD display goes through a start-up sequence showing the device type, software version
and self test results if the DIAG switch is in the proper position. After the start-up sequence the stan-
dard display shows track voltage and power of both track outputs (SCHIENE 1 and 2).
To
Main track
To
Programming track
Operate
switch
or
switch
plugs !
To
Main track
To
Programming track

Page 6 COMMAND STATION MX1, MX1HS, MX1EC
… on the economy command station MX1EC …
(and connection of the external MX1DIS display) 8. The DIP switches (back of MX1)
The MX1EC does not have a built-in display like the standard MX1 command station does, but the
same display is available as an external module (part # MX1DIS) that can be connected to the
MX1EC. See below!
A built-in light bar (LED’s) on the front of the MX1EC serves as a rough indicator for applied track
voltage and power.
Green single LED in the light bar indicates track voltage in steps of 2V;
ellow LED bar indicates current draw (scale is not linear, with finer
e
ill automatically fade out when track voltage changes are made. The
an external MX1DIS display module
proceed as follows:
mmand station. Locate the 16-pin
above), but only shows
Y
graduation in the lower range). LED’s change to red color just befor
reaching the maximum amperage (that is with the default setting of 7A).
Volt and Amps are indicated simultaneously if possible; the amp display
w
last LED on the right lights up red in case of overload situations (short
circuit on track or input voltage from transformer too low).
To connect
Remove the screws on each side of the MX1EC and
lift the top off the co
socket inside (see drawing at left) and plug in the
cable that comes with the display module. Lead the
cable to the outside above the RS232 connector on
the back and reinstall the top.
The displayed information is largely identical to the
built-in display of the MX1 (see
one volt and amp meter since only one track output is
present on the MX1EC.
… on the standard MX1 or high output MX1HS command station ...
The data format switch DCC, MOT, VAR:
tart up (memory function, output tests via feed-
nted with a future software update.
he data format jumpers DCC, MOT, VAR: e; also set to the DCC format only at
all three data format switches DCC, MOT and VAR are set to OFF, the command station is in the
signals of another
with them via the
e number sequence with the dip switches 5 – 8 (this limits the num-
is marked on the DIP switch body
s (in the
nally such that have
The command station as delivered is set to operate in the DCC data format
only. If required, the MOTOROLA mode can be selected instead or in addition
to the DCC format.
Adjust voltage from
12 to 24 V
.
Light bar indicates track voltage
(green) and Amps (yellow)
Power (transformer)
The switch VAR is not used for now. It can be used in the future for selecting
another data format or for the distinction of different variants of a given data
format.
The diagnostic switch DIAG:
This switch (or jumper on the MX1EC) is for the planned actuation of a com-
prehensive self test at system s
back wires etc.); will be impleme
The switch is also used for a general switch-over from the 8 to 12 function
mode.
12 - 14 V 20 - 22 V
16 -18 V
14 - 16 V 22 - 24 V
18 - 20 V
0,1 A 0,2 A 0,5 A 1 A 3 A 6 A
… on the economy command station MX1EC ...
T
The same meaning and functions apply as to the switches abov
delivery.
… on the high output command station MX1HS as booster …
If
booster mode (also known as slave unit), which means it will reproduce the control
command station MX1, MX1HS or a compatible third party product once connected
CONTROL wires (see chapter “The CONTROL bus). This mode is indicated in the right margin of the
display with “SL” (= SLAVE).
For the unit to function as a true booster (converting a MX1HS to a MXBOO) it is also necessary to
change internal jumper positions; see chapter “MX1HS as booster unit”! If more than one booster is
used set each booster to a uniqu
ber of boosters to 15).
… The switches 5 - 8 on the MX1 or MX1HS … (but not MX1EC) …
ON / OFF
Switch 5 ON (turn ON briefly, then OFF): Clearing all priorities in the DCC queue
- quicker reaction times by eliminating addresses which are no longer relevant.
Technical explanation: The command station continuously sends out commands to all 10239
addresses (send cycle); this is used to refresh the data in the loco decoders and allows the
loco number recognition to function. The priority of each single address varies – highest prior-
ity is given to recently changed data (when a cab was used), followed by active addresse cab display), in
the recall memory and so on all the way to addresses that were activated in the past and fi
never been used (lowest priority).

COMMAND STATION MX1, MX1HS, MX1EC Page 7
Shuttle
Switch 7 ON: Output PROG is limited to 1 A, normally it is limited to
3 A for MX1 and 8 A for MX1HS). 9. The auxiliary inputs (shuttle, AOS… )
Switch 7 and 8 ON: Service mode programming is locked! Prevents start of the
programming process by mistake; useful for MX1HS, where the PROG output is
r to the track only during a programming
tion mode are used …
NOT RELEVANT FOR SYSTEMS AND DECODERS FROM 2003 AND UP
on the MX1 or … on the MX1EC …
MX1HS …
he command stations are equipped with 8 inputs that can be used with track switches or other ex-
rnal input components such as reed switches etc. One of the pins is a 5V output that can be used
supply external switches with the necessary voltage; however, any other positive voltage (up to
used alternatively as a normal track output (”SCHIENE 2”).
Switch 8 ON: Output provides powe
procedure; driving on the programming track that is normally possible is locked;
may be useful if unsure about the proper installation of a decoder – less chance
of destroying the decoder.
All switches ON: Erases command station memory; useful if unexplainable
malfunctions point to a possible messed up memory.
… If “old” ZIMO decoders operating in the 8-func
IMO decoders were delivered in the 8-function mode until the year 2002; if these decoders should
in 2003)
mode
IAG jumper).
Bring the VAR switch or jumper in the desired position; the position the
-function mode is
well as the non-working
ode described above should only be used in ex-
Z
not or can not be switched to the 12-function mode the command station, which (beginning
has always been delivered with the 12-function mode on, can be switched to the 8-function
with the following procedure (“general switch-over” of all addresses).
>> Turn off command station (unplug transformer from main); with the un-powered command sta-
tion:
Place the DCC, MOT, VAR switches to OFF and the DIAG switch to ON
(with a MX1EC pull the DCC, MOT, VAR jumpers and install the D
>> Turn on command station (plug-in transformer); with the command station powered up:
switch or jumper is left in deteremines the selected mode:
OFF (or jumper pulled) = 8-function / ON (jumper installed) = 12-function mode.
>> Power down the command station within 10 seconds, place all switches
or jumpers to the normal position (i.e. DCC ON).
>> Command station is ready to resume normal operation. - or 12
NOTE: A disagreement between the system and decoders regarding the 8
noticed by functions 5 – 8 not operational (not just functions 9 and up!) as
MAN-Bit function!
The “general switch-over” to the (old) 8-function m
ceptional cases; an address specific adjustment is the better choice (either in the decoder with CV
#112 or the system through the cab).
…
(9-pin socket) (10-pin socket)
T
te
to
24V) can also be used to trigger these inputs (i.e. track voltage, which is the case when track
switches are used).
By default (alterable by configuration variables), the first 7 inputs are programmed for shuttle train
operation, switch ladder actuation or as “event inputs” for automatic operating sequences (AOS).
Regarding the allocation of shuttle train inputs: see MX31 manual; stop-over times during shuttle
train operations: see CV’s #41 – 56 in this manual. For definition and operation of AOS’ see chapter
“AOS – Automatic Operating Sequences”, CV’s #100, 101 below and the MX31 manual.
The eighth (last) input can be used (by default) for connecting a panic button that initiates an emer-
gency stop of all locomotives when actuated. Any positive voltage can be used as input, i.e. the 5V
from pin 1 or from the track.

Page 8 COMMAND STATION MX1, MX1HS, MX1EC
10. The CONTROL bus (booster connection)
Tis
tby
the boosters and receives information back from the boosters regarding over current conditions of
is standard.
edback is normally not transmitted via the CONTROL bus but prefera-
he CONTROL bus establishes communication between the command station and boosters that
he command station sends information out through the “DCC-out” connector, which is reproduced
booster units.
An NMRA standard exists for the CONTROL bus protocol (although not passed by the NMRA at the
time this manual was written), which makes the use of third party products possible provided they
adhere to th
In case of a pure ZIMO configuration that connects a ZIMO command station with ZIMO boosters (a
MX1HS may also be used as a booster if the appropriate jumpers are in the proper positions – see
chapter 15), the information fe
bly via the CAN bus, because more information is accessible (e.g. about failed power districts). In
this case the wiring is to be done according to the upper of the two following drawings:

COMMAND STATION MX1, MX1HS, MX1EC Page 9
11. The Configuration Variables
acteristics by means of configura-
ion variables. New features are introduced at the ZIMO web site www.zimo.at
The command stations offer the possibilities to modify certain char
tor can be studied in
new editions of this manual.
e “MAN” key and enter “100” as the command station address.
How to program or read out configuration variables is covered in the chapters “Addressing and Pro-
gramming” of the cab manuals (MX31…). The usual programming procedure is started by pressing
the “E” key followed by th
CV Name Range Default Description
#5 Max. c
SCHIENE 1 (MAIN)
0 - 80
0 - 8 A )
This CV defines the maximum allowable current for output
(MAIN track) before the over-current protection
t shuts the power off.
urrent on ( = 80
( = 8 A ) “SCHIENE 1”
is triggered tha
(Default 80 = 8 A)
#6 SCHIENE 2 = PROG 0 - 8 A ( = 8 A ) k) before the over-
triggered that shuts the power off.
Max. current on 0 - 80
( = 80 This CV defines the maximum allowable current for output
NE 2” (MAIN trac
“PROG” or “SCHIE
current protection is
(Default 30 = 3 A for MX1, 80 = 8 A for MX1HS)
#7 Switch-off delay
SCHIENE 1 (MAIN)
0 - 254
( =
2 - 508
250
( =
0,5 s )
cuit)
r the
oltage is
-
er the delay time if necessary.
ms )
After an over current situation is recognized (i.e. short cir
nt” fo
the command station switches to a “holding curre
duration of the delay time, which means the track v
being reduced to limit current flow to 10A. After the delay
time has elapsed, the output is shut-off completely (i.e.
“UES”). With this procedure it is possible to bridge very brief
short circuits that often occur at frogs without shutting the
layout down.
The default delay is for some application too long (a “short”
could leave burn marks on N-scale wheels) and it is recom
mended to low
#8 Switch-off delay
SCHIENE 2
0 - 254
( =
2 - 508
250
( =
0,5 s )
e
for MX1HS; the delay time of the MX1 is always limited to
ms )
Same as CV # 7, but for “SCHIENE 2” or “PROG” output.
NOTE: The full range of adjustment in CV #8 is only effectiv
100ms (can only be varied between 0 and 100ms).
#9 SCHIENE 1
Volt meter
corrections 90 - 110 102 Larger CV value = smaller display value
and vice a versa.
(Adjusting range about 2 V).
#10 Volt meter
corrections
SCHIENE 2 90 - 110 102 Larger CV value = smaller display value
and vice a versa.
(Adjusting range about 2 V).
#11
ing
1-Bit“ microsec
ied in length de-
rds. Useful for some third party
DCC Tim
= Length of „ 146 - 162 158 The short DCC bits (value “1”) can be modif
viating from the NMRA standa
decoders.
#12 RS 232 1 - 6 4 = 1: 1200 bit/s
CV Name Range Default Description
Bit rate ( =
1200 bit/s ( =
bit )
it/s
t/s
to
38400
bit/s )
9600
/s
= 2: 2400 b
= 3: 4800 bi
= 4: 9600 bit/s
= 5: 19200 bit/s
= 6: 38400 bit/s
#13 Handshake keRS 232 0, 1 1 = 0: no Handsha
= 1: RTS/CTS Handshake
#14 Number of
preamble bits 10 - 30 26
hort bits) between the end of a DCC
of the next command; synchro-
ission in decoders. d e
Number of 1-bits (s
command and the first byte
nizes the serial data transm
The default value (26) includes the special ZIMO ACK an
interpacket bits (4 + 10 bits), which leaves 12 “real” preambl
bits. If the ZIMO features “Signal controlled speed influence”
and “loco number identification” is not used, the number of
preamble bits can be reduced to 14 (the minimum number
required according to NMRA RP’s).
#15 Number of preamble bits in
service mode 20 – 30 23
Number of preamble bits during service mode programming
at the “PROG” output.
#19 og
locomotive 1 - 127 0
coder) with the cab.
= 0
Address for anal
The address entered here allows the control of an “analog
locomotive” (without de
: no analog locomotive can be controlled with the cab;
this setting should always be retained if no analog
locomotive is intended to be used (DCC signal is more
efficient).
#20 Stop time before a
direction change ( = 0 to
2 sec) ( = 2 sec )
0 - 255 255
#21 Stop time after a
direction change
0 - 255
( = 0 to
2 sec)
255
( =
2 sec )
These times are effective if the direction key on the cab i
pushed “on the fly”, with the loco moving (without stopping
the loco first).
s
By default, the direction is changed (headlights switching) 2
seconds after the end of the stop time is reached (per cab
settings, the decoder’s CV #4 is not being considered) and
after another 2 seconds the acceleration in the opposite di-
rection is started.
#22 turnout ladders ( = 0 to
2 sec) ( = 0,5 sec ) der so defined is actuated later, the time h
Time interval for 0 - 255 70 Turnout ladders are defined with the cab by “sample actua-
tion” with addresses 700.1, 700.2 … 799.7.
When a turnout lad
delay entered in CV #22 is applied between the single switc
commands.
#23 Clearing priorities tically resets to 0, so reading out this CV al- 1 0
Entering the value “1” clears all priorities in the DCC send
cycle (same as with switch 5, see chapter “Controls…”)
CV #23 automa
ways returns a 0.
#24 and
memory erase
111,
222 0 SET, all CV’s are set to default.
HARD RESET 0, This is a pseudo-programming (the value entered is not
stored, always remains 0)
= “222”: HARD RE

Page 10 COMMAND STATION MX1, MX1HS, MX1EC
CV Name Range Default Description
(from SW version 2.14)
= “111”: Clears memory (as with switches, see page 7).
1 - 55
#25
2 0
#26
Amp meter
calibration
“SCHIENE 1
(MAIN) ”
“SCHIENE 2” 1 - 55
If the display deviates from 0 without a corresponding load
on the track outputs, the display for each output can be re-
duced in 10mA steps.
(PROG) 2 0 Values 255 to 128 invert the values to “-1” to “-127”.
#27
“General
ction mode
= 1
switch-over”
to 8-function
or 12-fun
0, 1 1
= 0: All loco decoders are set to the 8-function mode.
: … to the 12-function mode.
#29 System state a
power up fter
= 2: Track power off (AUS)
0, 1, 2 0 = 0: Normal operation
= 1: Broadcast stop (SSP)
#31
#33
#34 ATTENTION: When
n
ion
CV
0 - 5
0
0
0
8 “AUX. IN” – Inputs!
#32
#35
#36
#37
#38
„AUX.IN“- Input
application
an input is used i
an AOS applicat
the pertaining
must be set to “0”!
0
0
0
0
2
One CV for each of the
= 0: Input not active (or AO
= 1: Shuttle train operation (
S)
allocated with the cab)
= 2: Panic button connected (initiates a broad
= 3: Panic button connected (turns track pow cast stop) er off)
tion
= 4: Activates a turnout ladder
= 5: Shuttle train operation and turnout ladder activa
= 6: Push-button switch for programming lock release
#
41, 42
43, 44
45, 46
47, 48
49, 50
51, 52
53, 54
55, 56
Stop time before or
after a direction
change during shut-
tle train operation.
1 - 255
( =
1 - 255
0, 0 38).
before and one
f di-
sec )
0, 0
0, 0
0, 0
0, 0
0, 0
0, 0
0, 0
2 CV’s for each of the 8 “AUX. IN” – Inputs!
These CV’s take effect only if the pertaining CV is set to
automatic shuttle train operation (value 1 in CV’s #31…
One of the two CV’s (e.g. #41) for stop times
CV (e.g. #42) for stop times after the automatic change o
rection.
#57
#58
#59
#60
#61
#62
#63
#64
Activating of a
turnout ladder with
an external switch. 11 - 99
for each of the 8 “AUX. IN” – Inputs, which only take
effect if the input is set for turnout ladder activation (value 4
in the pertaining CV #31….38).
0
0
0
0
0
0
0
0
One CV
Tens digit: Turnout ladder group address (1 - 9 = 701 – 709)
Ones digit; Number key (1 – 9) on the cab defined for this
turnout ladder.
#81
#82
Initialization of
priorities in the send
cycle. 127
0 9
0 9
= 1: Priority as before power-off
5 (lowest priority)
for DCC-Addr <
for DCC-Addr > 127 -
-
7
7
All addresses are set to the priority specified in this CV after
power up.
= 2: Priority 3
= 3: Priority 4
= 4: Priority
CV Name Range Default Description
# TOROLA 0 9 herwise 4
herwise 5
83 for MO
- 7 = 5: Priority 3 when speed > 0, ot
when speed > 0, ot
= 6: Priority 4
= 7: Priority 3 when speed > 0, otherwise 5
send cycle when speed = 0
= 8: Addr.>127 removed from
= 9: Addr.>127 removed from send cycle
#84
Addresses remain
in higher priority
after deactivation
from the cab
0, 1 0
= 0: Priority of addresses (> 127) is lowered some time after
youts with many
ntered accidentally also
efficiency.
they were cleared from the cab.
= 1: Addresses remain permanently in priority 3
CV #84 = 1 is recommended for larger la
large addresses > 127.
Disadvantage: addresses that were e
remain in high priority and reduce the send cycle
Therefore erase priorities once in a while!
#91 g third
party decoder 0 - 3 0
Adapt programmin
procedure to = 0: Normal
= 1/2/3: Turn track power off before/after or before + after
the programming procedure.
#92
Broadcast stop
e
ck.
= 0
initiated on main
track while pro-
gramming on th
programming tra
0, 1 0
: Broadcast stop (SSP) prevents unintended start up’s in
ions. New with SW-version 2.05!
MX9 sect
= 1: Trains on main track run unhindered during
programming.
#93 60 - 240 150 Changing this CV may help programming / reading locomo-
onsume power (i.e. with sound modules).
= 60: 100 mA
= 150: 250 mA
= 240: 400 mA
tives that always c
#94 10 - 20 30
and CV read-outs in “difficult cases”.
= 10: 17 mA
= 30: 50 mA
= 120: 200 mA
Changing this CV may improve the recognition of acknowl-
edgment pulses
#95
#96
he
ck:
cknowledgment
ower
ait“
ackages
„Reset Packages“
15
30
ent details to help with “difficult” third party
s”
Programming on t
programming tra
Maximum power
A
p
Max. number of
„ACK W
p
after programming
start
Programming ev
decoders.
Number of “ACK Wait” packages at the start of the pro-
gramming procedure, or the number of “Reset Package
that are sent after the programming procedure.
#99 LGB pulse chain
send 70
+/- 10 ms Change this CV in case the functions on LGB en
gines don’t function properly. -
#100 al-CV’s AOS See Chapter “Automatic Operating Sequences“!Speci

COMMAND STATION MX1, MX1HS, MX1EC Page 11
12. MX1HS as Booster-Unit 13. Fuses
The high-output version MX1HS can also be used as a slave unit and operates identical to the “real”
OO.
In o er to “convert” a MX1HS to a booster, jumper positions need to be changed inside:
A 4-pin “CONTROL” connector become
vi ht position (MX1HS as command
station).
ore, the switches DCC, MOT and VAR must be set to OFF and if several
OL bus” for
booster unit MXB
rd
fter removing the top cover, the two jumpers just ahead of the
sible (see drawing below). Both jumpers are normally in the rig
When both jumpers are moved to the left position the MX1HS becomes a slave unit and is only us-
able as such. Furtherm
boosters are employed a booster number must also be set. See the chapter “The CONTR
connecting a booster (slave) with a master command station!
2 Fuses (3 in the MX1HS) are accessible after removing the top cover; one (two in the MX1HS) of
them are 8A fuses in the left rear close to the TRAFO input; the other (2A or 4A) in the center near
the CAN bus outputs.
If an 8A fuse blows, the whole power supply to the command station itself and all connected modules
is interrupted (nothing lights up…) or the second power district (on an MX1HS). In most cases the
reason is a defect in the command station. A one-time replacement of the fuse can be tried.
A blown 2A (or 4A) fuse interrupts the power to the CAN bus, which is noticed by the “dark” cabs. In
most cases it is not due to a defective command station but rather a defective CAN bus cable (short
between power and ground). Replace the fuse and locate the defective cable by swapping each one
with a known good one, starting at the command station.
MasterSlave
Slav Mastere
MX1
or
MX1HS
Connector for ext. Display
Flash-EPROM
Connector for
Bidirectional
Detector
8 A - Fuse (Trafo)
2 A - Fuse (CAN Bus)
MX1EC

Page 12 COMMAND STATION MX1, MX1HS, MX1EC
14. SOFTWARE Update
As is the case with most ZIMO components, the MX1 command station contains a micro processor
for which software that controls all functions is stored in a FLASH-EPROM. The software is often re-
rom the ZIMO web site: www.zimo.at
vised and made available to all users.
The software is preferably replaced with the help of a computer and appropriate HEX files and an
update program that are available f See below regarding the
If an update via computer is not possible or an update from a version older than 10 is required (ver-
on is displayed during power up), the FLASH-EPROM itself would have to be replaced (a new
ll the way down. Be careful not to damage the socket or the solder joints!
emove the top cover only after the command station is powered down and the transformer un-
lugged.
program “ZST”!
si
EEPROM is available from ZIMO).
To replace a FLASH-EPROM:
The socket containing the FLASH-EPROM is located inside the command station on the left (MX1,
.
MX1HS) or to the front (MX1EC). Carefully remove the FLASH-EPROM from its socket and push the
new one a
R
p
15. The software ZST (ZIMO Service Tool)
The software ZST has been available for download at no charge from the ZIMO web site
www.zimp.at since September 2004. It is suitable for easy updating of command stations and all
connected modules containing FLASH-EPROMS (MX21, MX31, MXFU…) and will continually be ex-
mmand station display shows that the serial data connection is ac-
d the command station and
pecific cab is in progress,
2. line shows progression in % or bytes).
OG (= CV’s can be read-out and changed).
ZST RAM BACKUP
and much more.
panded (Equipment-CV programming, CAN bus monitoring, statistical evaluations, data back-up and
more).
For inspection purposes, the co
tive, ZST is running, what is currently being processed between ZST an
its progress. For example:
ZST MX21 LISTE (= Search for and identify connected cabs).
ZST MX21 UPDATE (= New software upload for a s
ZST MX1 CV PR
ZST MX1 UPDATE
ZST CAN BUS
ZST MX21 LISTE
3 G EFU ND

COMMAND STATION MX1, MX1HS, MX1EC Page 13
16. AOS – Automatic Operating Sequences
From SW-version 2.05 (in MX1, MX1HS, MX1EC) !
eir relative time
quence later plays back the recorded commands, where the recorded events are used for the
ith two or
ore alternating trains are possible but also more complex processes like repetitive shunting move-
two trains can be defined, that is, from each of
the two dead-end sections to the right a train should move to the end of the common track (far left),
stop, and return to its own track. The track contact in the common section is the “event” input and al-
lows for automatic time-modifications to the sequence (increase or decrease) in order to compensate
for changes in driving behavior (warm-up etc.).
What is an “Automatic Operating Sequence” (AOS)?
In principle, it is a timed and most often continuous replay of previously recorded sequences of drive
and switch commands.
In the course of a “sample run”, all commands from a cab addressed to a locomotive (speed, direc-
tion, functions) and accessories (turnout and signal positions), together with th
stamps are being recorded and stored in the command station. Additionally so-called events, which
are signals from track switches, reed switches or similar are also recorded. Executing a stored oper-
ating se
necessary corrections in time (by comparing the actual events with the recorded events).
With “AOS”, shuttle train operations with stop times, signaling and sound effects even w
m
ments.
Any number of locomotives and accessories may be part of a sequence. Each sequence is recorded
separately; but several sequences can of course be played back simultaneously.
Recommendations to “event” triggers:
Track contacts, reed switches (with magnets on locomotives), photocells etc. can all be used as
“event” triggers and connected to the “AUX.IN” inputs of the command station; see chapter 8.
In many cases one single “event” in the sequence is sufficient. With the track configuration shown
below for example, an alternating shuttle service of
to one of the
“AUX.IN” inputs to track output “SCHIENE” of
the command station.
Example of an “event” trigger location for an operating sequence (AOS):
Recording an operating sequence by means of a sample run:
Described here using a MX2 cab, but equally valid when using a newer cab (MX31) if used “like an
MX21”. Future software versions of the MX31 will have extended adjusting and subsequent correc-
ve actions; see MX31 manual!
he MX2 (MX21, MX31...) uses the definition procedure for turnout ladders for this, particularly the
roup address is first entered in the
b then indi-
e still free or al-
ti
T
special group addresses range between 790 and 799. New software for the MX2 is therefore not re-
quired.
The memory location of an operating sequence is determined by the group address (AOS – group)
790….799 and the location number 1…8 of each group.
For both, recording and executing an operating sequence, the g
cab just like a loco address but activated with the “A” key (for a module address). The ca
cates with the LED above each number key 1 – 8 whether the locations concerned ar
ready occupied:
Key-LED green: Location is empty (ready for a new recording)
Key-LED yellow: Location is full (a new recording is only possible after deleting the old)
All key-LED’s flashing red: Memory full (no further definitions are possible)
esponding key.
To delete a memory location press the “C” key together with the corr
To start recording a sample run, press the desired location key (1….8) for at least 1 second; which
the cab confirms with the
Key-LED flashing red/green: Recording of a sample run in progress.
Before starting with the sample run, bring the locomotive(s) and accessories to their start position,
activate them on one or several cabs or make sure they are easy accessible (in recall memory); to
facilitate the whole process it is recommended that another cab(s) is used than the one the AOS
group (709….799) was initiated with.
IMPORTANT: Since all cab commands are being recorded during a sample run, abstain from running
other trains or operating other accessories; furthermore all MX8 and MX9 modules should be discon-
nected from the CAN bus (otherwise their function would be disturbed during an AOS execution
later)! The layout itself however may remain connected.
After the recording has started (when the key-LED flashes red/green), all cab activities are being re-
corded and the sample run may begin. All train movements, loco functions, turnout and signal actua-
tions must now be made exactly the way they should later be operated when the AOS is played back
endlessly.
At the end of the sample run, all locos should be back to their starting point; otherwise there will be
no endless replay possible. The recording is ended by pressing the same location key briefly (the key
with the LED flashing red/green). The indicator then changes to
Key-LED yellow: memory location is full,
if the recording was successful. If the key-LED turns green, the recording was not possible. If during
or at the end of a recording the
Key-LED flashes red: the memory has been exhausted (no recording takes place).
splayed by the command sta AOS-specific information di tion:
Useful information is shown on the
ever not depend on the display, that i
nd for AOS of the currently installed
o
adding of sequences), by up
new software or if the memory
of loco names).
MX1 display during a sample run; the recording itself does how-
s it is also possible with a MX1EC that doesn’t have a display.
As soon as an AOS procedure is entered (input and activation
of a group address on the cab), the upper line switches to the
display of statistical data of current AOS memory: the number
of already stored sequences and the occupied memory space.
Note: The displayed occupa
mum available space reserve
software version. This
cy rate in percent relates to maxi-
value can change without the perators input (without deleting or
dating the command station with
is used for other tasks (i.e. storing
Labe
displa
Num
stored
Use
seque
Fre
space
lfor AOS
y
ber ofcurrently
sequences
d upmemory for
nces(Bytes)
ememory
forAOS
AstoredAOS
r
unning (playback)
AOSgroup address and
locationnumber
Expected,activeetc.
“Event” andstatus
Step counter (inBytes)
asprogress indicatior
Statusof next“event”

Page 14 COMMAND STATION MX1, MX1HS, MX1EC
The lower line is active during a sample run; that is after the recording
ocedures (lower
yback administration is full *)
*) can be freed by deleting sequences.
was started by pressing the appropriate number key for at least one
second.
This is especially useful to confirm whether the expected “events” are
coming and how much memory is being used up for this sequence.
The display also shows deleting actions and other pr
line); as well as error messages:
Error #2: Memory for pla
Error #3: Memory is full
Executing a stored operating sequence:
Described here using a MX2 cab, but equally valid when using a newer cab (MX31) if used “like an
MX21”. Future software versions of the MX31 will have extended adjusting and subsequent correc-
tive actions; see MX31 manual!
The playback is started the same way as a sample run recording, by entering the group address on
the cab as you would for a loco address but accepting it with the “A” key instead. The LED’s above
each number key (1….8) indicate whether the memory locations are empty or occupied:
Key-LED green: memory location is empty
Key-LED yellow: memory location is full (playback activation is possible)
To activate a stored operating sequence playback, press the key of the desired “yellow” memory lo-
cation; which is acknowledged by
Key-LED flashing yellow: operating sequence is running.
Before the operating sequence can be played back, the locomotives involved must be at their re-
spective starting positions, as they were when the sequence was started for the recording.
Any cabs showing an active loco address that is part of this sequence will have that address auto-
matically deactivated (address is flashing).
ATTENTION: The loco addresses part of an operating sequence must not be activated with the cab
while the sequence is being played back!!
To end a playback, press the same key briefly; all trains that are part of this sequence are being re-
turned to their starting location and automatically stopped. Once again the
Key-LED yellow: memory location is full but no longer in playback mode.
If the trains need to be stopped immediately, press the key twice.
AOS-specific information displayed by the command station:
Depending on the CV #101 setting (see below), useful information during playback of an operating
sequence is shown by the MX1 display either temporarily (about 20 sec, default) or permanently (CV
#101, Bit 0 =1).
The upper line shows common data about the AOS memory (as during a recording); the lower line is
of most interest about the “event” handling: it becomes visible whether the timing during playback
matches the sample run and whether the “events” are being recognized properly. For this purpose,
the “events” are shown with prefixes:
N.. = This is the next expected “event”; the playback of stored commands is being executed as
planned (that is after the stored “events”).
W ..= The “event” is expected now, that is no more commands are to be executed ahead of this
“event”. If the train is late (compared to the sample run), the playback is delayed until the “event” is
triggered in order to re-synchronize the sequence.
Sampl
in rogr
Groupaddres
location number
Lastrecognize
stored “ev
Currentlyused
space(Bytes)
seque
S.. = The “event” was triggered earlier than expected (the train was faster than during the sample
run); the playback speed is increased to re-synchronize the sequence; that is the commands up to
this point are processed faster.
B..= The next “event” is (still) locked (because it is also the past “event” triggered by axles of the
train, which is being expected).
E.. = “Event” is happening.
X00 = This operating sequence contains no “events” (no synchronization possible).
MX1 – Configuration variables for Automatic Operating Sequences (AOS):
These parameters are absolutely valid for MX2 and MX21 cabs; with an MX31 cab and future soft-
ware version an individual setting for every operating sequence is possible. See MX31 manual!
CV #100: Simulation of overdue “events”. In case an “event” that was stored during a sample run re-
cording has not been triggered, the sequence is aborted after 1 minute by default (CV #100 = 0);
most often though in connection with an accident (collision at the end of the run or similar). With
CV #100, Bits 0 – 5 = 0….63 a time is defined after which a reaction takes place if an “event” is over-
due, namely
when Bit 7, 6 = 00 the operating sequence is being aborted;
when Bit 7, 6 = 01 (decimal + 64) the “event” is being simulated.
For example: If CV #100 = 69, the overdue “event” (compared to the recorded “event”) is generated
artificially after 5 seconds and the operating sequence will continue.
CV #101: pertains to the MX1 display when executing a stored operating sequence; by default the in-
formation is displayed only briefly and thereafter switches back to the normal MX1 volt and amp me-
ter display. This does not affect the display during a sample run recording, which is always displayed
permanently:
Bit 0 = 0: Display is used “normally” (Volt and amp meter ….), not for AOS
Bit 0 = 1: The last activated sequence is continuously being displayed and updated.
erun
ess
sand
dand
ent”
memory
forthis
nce
p

COMMAND STATION MX1, MX1HS, MX1EC Page 15
17. The “old” (ASCII-oriented) Interface
This section is only of interest to users that want to operate the layout with an external computer but
don’t want to use the ready made software “STP”.
The serial interface of the MX1 command station allows the control of trains and accessories by a
computer as well as the polling of current route and switch data from the computer.
The interface at the MX1 is a 9-pin Sub-D socket; the connection with a computer is done with a 1:1
serial cable.
The following described protocol was adopted from the previous product of the MX1 “model 2000”
command station described here and ensures compatibility to already existing applications. A more
powerful (alternative) protocol is in preparation (binary instead of ASCII).
Data transmission parameters:
9600 bit /s (default) - 8 bit - no parity - number of stop-bits 1 or 2.
(higher speed selectable with CV #12).
Computer to MX1 command format:
COMMAND ID - INFORMATION BYTES - CARRIAGE RETURN
(defines the command) (command data) (always last byte of a command)
The COMMAND ID is an ASCII letter (i.e. S, F, K etc.), which identifies the kind of command and
also determines the meaning of the information byte that follows.
With the command ID “S” only one INFORMATION BYTE follows in the form of another ASCII letter
(S, A, E).
All other command ID’s can be followed by a row of INFORMATION BYTES, which are however not
coded as binary but rather as two ASCII characters that represent the hexadecimal value (function
“HEX$” in BASIC).
At the end of each command, a CARRIAGE RETURN code must be present (“CHR$(13)” in BASIC).
Example of opening the interface and sending a loco command in BASIC:
OPEN “COM1:9600,N,8,1,CS,DS,CD” FOR OUTPUT AS #2
PRINT#2, “F”; “N”; HEX$(Loco address); HEX$(Speed step);
HEX$(Data byte1); HEX$(Data byte1); CHR$(13);
“F” is the command ID for loco commands; “Loco address” and “Data byte” are in decimal form (i.e.
loco address = 123, the data byte is a combination of speed and functions, see below); CHR$(13) is
the concluding carriage return.
ATTENTION: A leading “0” must be entered with values of <16!
All information bytes (loco address, speed step, data bytes etc. as described in the following com-
mands) must be sent to the MX1 command station in the form of two ASCII characters. The “HEX$”
function however sends in many BASIC versions only one character for values smaller than 16
(hexadecimal characters “0” to “F”). A “0” must be added as a leading character in such cases; if
possible with corresponding BASIC commands or by defining a special function that always produces
two characters.
Note for the creation of commands in other than a BASIC environment:
Sending the respective command ID (ASCII) does not present a problem. Coding of information
bytes is as follows: a loco address of “123” for example corresponds to the hexadecimal figure “7B”,
which is being sent as the two ASCII characters “7” and “B” (only capital letters are allowed as hexa-
decimal characters!). The same applies to data bytes: for example, the “L function ON” and the
speed step 14 in a loco command result in a hexadecimal figures “1” and “E”, which are send as AS-
CII characters. ATTENTION: always two ASCII characters per information byte (add a leading zero if
necessary).
Description of individual command types:
NOTE: In case of a MX1 command station sending out several data formats (DCC, MOTOROLA),
the respective loco or accessory address must contain a data format prefix:
“N” for DCC (for ZIMO and other NMRA-DCC compatible decoders) / “M” for MOTOROLA (Märklin
decoder).
Broadcast stop and track power OFF/ON commands: Command ID “S”
The entire command consists of only the command ID “S” and another letter, which represents its
content, as well as the obligatory carriage return:
“SS”; CHR$(13) - Broadcast stop ON (stops all trains).
“SA”; CHR$(13) - Track power OFF.
“SE”; CHR$(13) - Track power and broadcast stop OFF (normal operation commences).
Loco command: Command ID “F”
Besides the command ID “F”, the loco command consists of the appropriate loco address and the
data bytes, which contain the information about speed, direction and functions.
“F”; data format prefix (“N”,"M") HEX$(loco address);
HEX$(speed step); HEX$(data byte 1), HEX$ (data byte 2),
HEX$ (data byte 3), CHR$(13)
Data format prefix- only “N”, “M” allowed, see note above.
Loco address - decimal value (1 to 255); use HEX$(0) with single digit values
Speed step - Speed step of the currently active speed step systems
Data byte 1 - Bit 7 MAN-Bit
Bit 6
Bit 5 Direction (0 = forward, 1 = reverse)
Bit 4 Headlights ON/OFF (= DCC-Function 0)
Bit 3/2 DCC – speed step system
(01 = 14 speed steps, 10 = 28 steps, 11 = 127 steps;
Bit 1 Deceleration time “BZ” (definable with command “B”) ON/OFF
Bit 0 Acceleration time “AZ” (definable with command “A”) ON/OFF
Data byte 2 - Bit 0-7 Functions 1-8 ON/OFF
Data byte 3 - Bit 0-3 Functions 9-12 ON/OFF

Page 16 COMMAND STATION MX1, MX1HS, MX1EC
How the decimal value of the data byte that is entered to the above HEX$-function is calculated, ex-
plains this example: “MAN” turned OFF, lights ON, direction reverse, speed step system “0-28”, “AZ”
and “BZ” OFF results in the binary word “00111000”, which in turn is the equivalent to the decimal
value of 0 x 128 + 0 x 64 + 1 x 32 + 1 x 16 + 1 x 8 + 0 x 4 + 0 x 2 + 0 x 1 = 56.
Function inversion command: Command ID “U”
This command allows inversion of direction and/or function outputs; this is sometimes useful in com-
puter applications.
“U”; Address prefix, HEX$(loco address); HEX$(data byte 1); HEX$(data byte 2); CHR$(13)
Data format prefix - only “N” and “M” or “Z” are allowed
Loco address - decimal value (1 to 255),
Data byte 1 - bit assignment like command “F”, inversion with“1" (except 3/2)
Data byte 2 - bit assignment like command “F”, in version with“1"
Data byte 3 - bit assignment like command “F”, in version with“1"
Acceleration/deceleration (AZ/BZ) - command: Command ID “B”
Adjustment of “AZ” and “BZ”, which are the acceleration and deceleration times controlled by the
MX1 command station. Not to be confused with the configuration variables # 3 and # 4 in the decod-
ers! “AZ” and “BZ” is independent of these configuration variables and it can also be used for non-
DCC decoders. Note that “AZ” and “BZ” is turned ON and OFF with the “U” command.
“B”; data format prefix; HEX$(loco address); HEX$(data byte); CHR$(13)
Data format prefix - only “N” and “M” or “Z” are allowed, see note above.
Loco address - decimal value (1 to 255)
Data byte - Bit 0-3 BZ (0 - 15)
Bit 4-7 AZ (0 - 15)
Shuttle train command: Command ID “P”
This command allocates particular locomotives to the shuttle train inputs 1 to 4 of the command sta-
tion (see the cab operating manual for details on shuttle train operations).
“P”; data format prefix; HEX$(loco address); HEX$(data byte); CHR$(13)
Data format prefix - only “N” and “M” or “Z” are allowed, see note above.
Loco address - decimal value (1 to 255)
Data byte - Bit 0-3 Shuttle train inputs 1-4, forward
Bit 4-7 Shuttle train inputs 1-4, reverse
Query of extend address indexing Command ID “E”
Locos with extended addresses (128 - 10239) are accessed with the usual commands listed above,
but instead of the address itself, an automatically assigned internal index address (128 - 255) is
used; which first needs to be ascertained with the help of the “E” query:
“E”; HEX$(High-byte of the loco address); HEX$(Low-byte); CHR$(13)
The command station then supplies an index message; such a message is delivered for addresses
>128 after each loco command to validate their assignment (unused loco addresses can lose their
initial index address if required).
Commands for accessory DECODERS: Command ID “M”
An accessory command is similar in its structure as a loco command; the data byte contains the ac-
tuation information of 4 (in the DCC and MOTOROLA format) or 8 (in the ZIMO data format) turnouts
or signals.
“M”; data format prefix; HEX$(Accessory decoder address); HEX$(Data byte); CHR$(13)
Data format prefix - only “N” and “M” or “Z” are allowed
Accessory decoder address - decimal value (0 to 255); for MOTOROLA only to 63.
Data byte (DCC-data format) Bit 7 9. Address bit (Address range 0 to 510 !)
(The same for MOTOROLA- Bit 3 Switches ON or OFF (1=ON, 0=OFF)
format but without Bit 7) Bit 2-0 Number of the output to be switched
NOTE: If a switch command cannot be executed because another accessory command is currently
being processed, the MX1 answers with “???; CHR$(13)”
The switch command must be repeated (in intervals of about 500 msec) until the negative answer is
no longer returned.
Commands for accessory MODULES: Command ID “N”
In contrast to the loco and accessory DECODER’s, the switch commands here are combined with
the command ID “N”. There are therefore two implementations of the command, depending on the
“switch type”.
“N”; HEX$(Module address); HEX$(Data byte); CHR$(13)
Module address - 800 to 863
Data byte as command - Bit 0-5 Number of the MX8 output
Bit 6 Position (0 = left, 1 = right)
Bit 7 = 1 (ID for command byte)
Data byte for query Bit 0-7 = 0 (ID for query)
Status query: Command ID “Z”
The command station is queried about the track voltage, broadcast stop and the available data for-
mats (DCC, MOTOROLA, ZIMO).
“Z”; CHR$(13)

COMMAND STATION MX1, MX1HS, MX1EC Page 17
Query the command station memory: Command ID “A”
With this command the command station delivers information about current loco and accessory data
for a specific locomotive or accessory address.
“A”; F/W selection; Data format prefix; HEX$(Loco or accessory address); CHR$(13)
F/W selection - “F” = Loco address, “W” = Accessory address
Accessory address - if the DCC data format is used, a second data byte must be sent, of which
only Bit 7 as the highest DCC address is being evaluated (address range up to 510).
Commands in conjunction with routes: Command ID “W”
These commands relate to routes (turnout ladders) that are defined and called up with the cab (see
cab manual). These route definitions are stored in the MX1 command station; the route memory can
be read out, re-installed or deleted via the MX1 computer interface. This allows the route definitions
to be saved in an external computer and if needed to be restored again (i.e. after loss of the MX1
memory or for transfer to another command station).
“WCLEAR”; CHR$(13) - Delete all routes.
“WO”; CHR$(13) - Send all stored route definitions to the computer.
“WI”; CHR$(13) - Reload routes from the computer.
If the data structure of the “WI” command is known (will be added later), it will be possible to define
routes in the computer and send them to the command station.
Commands in conjunction with lines: Command ID “O”
These commands relate to lines (block control) that are defined and called up with the cab (see cab
manual). These line definitions are stored in the MX1 command station; the memory can be read out,
re-installed or deleted via the MX1 computer interface. This allows the line definitions to be saved in
an external computer and if needed to be restored again (i.e. after loss of the MX1 memory or for
transfer to another command station).
“OCLEAR”; CHR$(13) - Delete all lines.
“OO”; CHR$(13) - Send all stored line definitions to the computer.
“”; CHR$(13) - Reload lines from the computer.
If the data structure of the “” command is known (will be added later), it will be possible to define lines
in the computer and send them to the command station.
Register-Programming Command ID “R”
For addressing and CV programming of all NMRA-DCC compatible loco decoders (ZIMO and others)
and for programmable decoders with the MOTOROLA format (Uhlenbrock decoder); the address is
stored in configuration variable (register) 1. The programming is performed on the programming
track.
“R”; Data format prefix (“N”or “M”); HEX$(Register number); HEX$(new value); CHR$(13)
“RE” – Terminating the programming mode
The “R” command (same as the “Q”) triggers a register message that serves as acknowledgment!
Register polling (for DCC data format only!) Command ID “Q”
This command prompts the command station to send a register message, which is used for reading
out configuration variables of NMRA-DCC compatible loco decoders.
“Q”; HEX$(Register number); CHR$(13)
Programming-on-the-main (for DCC data format only!) Command ID “L”
“Programming on-the-fly” (or “programming-on-the-main”).
“L”; HEX$(Loco address); HEX$(Command bytes); NMRA-Instruction; CHR$(13)
Loco address - decimal value (1 to 127)
Data byte - Bit 0-2 Number of bytes of the NMRA telegram (excl. ECC)
Bit 3-5 Number of desired telegrams
Bit 7 = 1: Address is locked out of the normal send cycle.
= 0: Address is controlled normally after the desired number of
telegrams have been sent.
NMRA-Instruction (up to 5 Bytes) - “On-the-main” – Command according to NMRA - RP 9.2.1
Special command:
Laa00 unlocks address aa without sending new data.
Message formats from MX1 to computer:
Command station status (“Z” query):
“Z”; HEX$(status byte); CHR$(13)
Status byte -Bit 7 MX1-Generation (0 = “old”, 1 = “new”)
Bit 6 1 = ZIMO-Data format active (Type and jumper)
Bit 5 1 = DCC- Data format active (Type and jumper)
Bit 4 1 = MOTOROLA- Data format active (Type and jumper)
Bit 0 Broadcast stop (1 = ON, 0 = OFF)
Bit 1 Track power (1 = ON, 0 = OFF)
Bit 2 UES-Short circuit protection (1 = ON, 0 = UES OFF)
Memory report (after “A” query):
“A”; F/W-Selection; data format prefix; HEX$(Loco or accessory address);
HEX$(speed step); HEX$(Data byte 1); HEX$(Data byte 2);
HEX$(Data byte 3); HEX$(AZ/BZ); HEX$(Group byte); CHR$(13)
F/W-Selection “F” = Loco address, “W” = Accessory address
Data format prefix - only “N”, “M” allowed
F..- or M..address decimal value (1 to 255);
additional Byte for DCC data format with
Bit 7: 9. address byte; Bit 0: 0 = paired bits, 1 = single bits)
Speed step or accessory position – as in “F” or “M” command
Data byte 1 - Format same as data byte 1 in “F” command
Data byte 2 - Format same as data byte 2 in “F” command
AZ/BZ-Values - Format same as data byte in “B” command
Data byte 1 - Bit allocation same as in “F” command

Page 18 COMMAND STATION MX1, MX1HS, MX1EC
Data byte 2 - Bit allocation same as in “F” command
Data byte 3 - Bit allocation same as in “F” command
or
Group byte -Bit 0 Cab activity (0 = not active, 1 = active, address in display)
Bit 2 Loco decoder feedback (1 = received)
Register report (after “Q” query):
“Q”, HEX$(Error code), HEX$(Register number); HEX$(current value); CHR$(13)
Error code - 0 = successful read-out of register number
Index report (after “E” query or loco command for extended address):
“E”, HEX$(Index addressee), HEX$(loco address high byte); HEX$(low byte); CHR$(13)
Error code - 1 = “Old” ZIMO data format is active (jumper).
3 = Address is < 128 (not extended address)
5 = Index address is not assigned to a loco address.
Error messages in form of an index address (Index address < 128 is an error message!).
0 = no data block available.
1 = “Old” ZIMO data format is active (Jumper).
3 = Address is < 128 (must be used as normal address).
18. The “new” binary Interface Protocol
1. Communication basics:
The basic communication format is N,8,1 (no parity, 8 data bits,1 stop bit). Communication speed
ranges from 1200 to 38400 bit/s and can be selected via CV12. The default value is 9600 bit/s.
2. Flow control
Flow control is done via hardware (RTS/CTS). It is necessary to use a serial cable with at least 5
wires which also connects the RTS and CTS lines between PC and command station. Hardware flow
control can be disabled by setting CV13 to 0. Default value is 1 (hardware flow control enabled).
3. The new binary communication
The new binary communication consists of data frames with the following structure:
•long frames:
<SOH><SOH>headerinfo_and_data[checksum16]<EOT>
•short frames (for frames of maximum 15 bytes):
<SOH><SOH>headerinfo_and_data[checksum8]<EOT>
To establish a data transmission independent of content, all data characters identical to control
characters have to be protected with the additional escape character prefix <DLE> and the
character itself is XOR'ed with 0x20.
control
character value replacement within
data description
<SOH> 0x01 <DLE>(<SOH>^0x20) start of a data frame
<EOT> 0x17 <DLE>(<EOT>^0x20) end of data frame
<DLE> 0x10 <DLE>(<DLE>^0x20) escape character
Each data frame is immediately acknowledged by the receiver (level 1 reply). This reply may contain
the appropriate data if it's immediately available in the command station. Otherwise the request is
passed on via the CAN bus (to another station for example) and the subsequent incoming data is re-
turned (level 2 reply).
3.1. Header info
The header info describes the meaning of the data content of a frame. The length of the header info
is between 2 and 15 bytes. The first byte is the unique sequence-ID of the frame and must not be
identical in two different consecutive frames. If a frame has to be repeated, the sequence-ID remains
unchanged. The second byte specifies the message type and the meaning of additional header
bytes.

COMMAND STATION MX1, MX1HS, MX1EC Page 19
3.1.1. short frame protocol messages
General messages
Reset message
Header byte Value Description
1 0-255 unique sequence-ID
2 0 reset message
Reply: Ack for Reset (level 1)
Negative acknowledgement sent by command station
Header byte Value Description
1 0-255 unique sequence-ID
2 1 negative acknowledgement sent by command station
Reply: n.a.
Negative acknowledgement sent by PC
Header byte Value Description
1 0-255 unique sequence-ID
2 2 negative acknowledgement sent by PC
Reply: n.a.
Acknowledgement/reply sent by command station (level 1)
Header byte Value Description
1 0-255 unique sequence-ID
2 3 acknowledgement/reply sent by command station (level 1)
3 ID sequence-ID of the message that is being acknowledged
4..15 data optional: requested data or additional return code
Reply: n.a.
Acknowledgement/reply sent by PC (level 1)
Header byte Value Description
1 0-255 unique sequence-ID
2 4 acknowledgement/reply sent by PC (level 1)
3 ID sequence-ID of the message that is being acknowledged
4..15 data optional: requested data or additional return code
Reply: n.a.
Acknowledgement/reply sent by command station (level 2)
Header byte Value Description
1 0-255 unique sequence-ID
2 5
acknowledgement/reply sent by command station (level 2)
3 ID sequence-ID of the message that is being acknowledged
4..15 data optional: requested data
Reply: Ack (level 1)
Acknowledgement/reply sent by PC (level 2)
Header byte Value Description
1 0-255 unique sequence-ID
2 6 acknowledgement/reply sent by PC (level 2)
3 ID sequence- ID of the message that is being acknowledged
4..15 data optional: requested data
Reply: Ack (level 1)
Acknowledgement sent by command station for reset message
Header byte Value Description
1 0-255 unique sequence- ID
2 7 acknowledgement sent by MX1 for reset message
3 ID sequence- ID of the message that is being acknowledged
Reply: n.a.

Page 20 COMMAND STATION MX1, MX1HS, MX1EC
Acknowledgement sent by PC for reset message
Header byte Value Description
1 0-255 unique sequence- ID
2 8 acknowledgement sent by PC for reset message
3 ID sequence- ID of the message that is being acknowledged
Reply: n.a.
Command station query
Header byte Value Description
1 0-255 unique sequence- ID
2 9 query command station
Reply: Ack (level 1) see also 4.5
Command station messages
These messages provide communication with the command station.
Track control
Header byte Value description
1 0-255 unique sequence- ID
2 0x0A command station instruction
3 0 track control
4 cAction 0 stop broadcast (stops all locos)
1 switch track voltage OFF
2 switch track voltage ON and re-enable broadcast
3 query status
Reply: Ack (level 1)
Return code Value Description
Status Bits dm000uts d ……. DCC (1 on, 0 off)
m …… Motorola (1 on, 0 off)
u ……. UES (1 UES on, 0 UES off)
t …….. track voltage (1 off, 0 on)
s ……. broadcast stop (1 on, 0 off)
Loco control
Header byte Value Description
1 0-255 unique sequence- ID
2 0x0A command station instruction
3 1 loco control
4 cAdr_hi loco address high byte
bit 6 + bit 7 format specifications (see 4.6)
5 cAdr_lo loco address low byte
6 cSpeed Speed step in the actual speed step system
(DCC data signal: 0-14, 0-27 or 0-126; according to bit 3/2 in
cData1;MOTOROLA protocol: 0-14)
7 cData1 bit 7: MAN (override signal controlled speed limits)
bit 6: no function
bit 5: direction (0 = forward, 1 = reverse)
bit 4 headlights on/off (= DCC function F0)
bit 3/2 DCC speed step system (see 4.7)
bit 1 decel. time “BZ” (definable by command “B”) on/off
bit 0 accel. time “AZ” (definable by command “B”) on/off
8 cData2 bit 0-7: function outputs 1-8 on/off (DCC only)
9 cData3 bit 0-3: function outputs 9-12 on/off (DCC only)
Reply: Ack (level 1) see also 4.8 and 4.9
Invert function bits
Header byte Value Description
1 0-255 unique sequence-ID
2 0x0A command station instruction
3 2 invert function bits
4 cAdr_hi loco address high byte
bit 6 + bit 7 format specifications (see 4.6)
5 cAdr_lo loco address low byte
6 cData1 the following bits are toggled when set:
bit 7: MAN (override signal controlled speed limit)
bit 6: no function
bit 5: direction (0 = forward, 1 = backward)
bit 4 headlights on/off (= DCC function F0)
bit 1 Decel. time “BZ” (definable by command “B”) on/off
bit 0 Accel. time “AZ” (definable by command “B”) on/off