AMALGAMATED INSTRUMENT PM4-SSI Guide

Model PM4-SSI
Synchronous Serial Interface
Panel Mount Display/Controller
Operation and Instruction Manual
AMALGAMATED INSTRUMENT CO ABN: 80 619 963 692
Unit 5, 28 Leighton Place Hornsby Telephone: [phone] e-mail: [email protected]
NSW 2077 Australia Facsimile: [phone] Internet: www.aicpl.com.au

Table of Contents
1 Introduction 3
2 Mechanical Installation 4
3 Electrical installation 5
4 Function tables - summary of setup functions 8
5 Explanation of functions 12
6 BCD Converter Input Functions 33
7 Specifications 35
8 Guarantee and service 36
2 of 36 PM4SSIMAN-2.2-0

1 Introduction
This manual contains information for the installation and operation of the PM4-SSI monitor.
The input to this instrument is a Synchronous Serial Interface (SSI) up to 31 bits of binary or
Gray code, user selectable. The SSI data transmission is initiated by clock pulses generated by
the PM4 monitor. Typical SSI output devices include absolute position encoders and distance
measuring equipment. Data transmission distances of up to 1.2km are possible when using SSI
data communications.
The display can be scaled in engineering units e.g. ”mm” by one of three methods:
1. By entering values at the INPt and SCLE functions, These values work together with the
output value from the encoder in a formula used to calculate the required display scaling.
See functions 5.28 and 5.29.
2. By the U.SCL method which allows the encoder to be zeroed or assigned a preset value in one
position then moved to a known position and its value for this position entered (see U.SCL
function 5.33). The ability to use external switch with front Pand Fbuttons makes this
method most useful where the scaling is to be changed frequently.
3. By entering the values required at two known points (see USER SCLE function 5.37). This
method also allows the use of a calibration offset.
The PM4-SSI may also be used with models RM-BC and RM4-BC BCD to SSI converters. When
used with one of these converters a BCD input is converted to an SSI output which is then inter-
preted by the PM4-SSI. The SEt OPER setup function is used to select the input type required.
If the input from a general SSI output device then select SSI at this function. If the input is from
model RM-BC or RM4-BC then there is a choice of either 8 bit BCD (bc 8) or 24 bit BCD (bc
24). Refer to Chapter 6for a description of functions seen when in the bc 8 or bc 24 modes.
Scaling and setup of the PM4 monitor are all accomplished by push button operation. “On screen”
prompts are given for each function to assist in setting up the instrument. Some changes may
require dismantling the instrument to alter PCB links.
An inbuilt relay provides an alarm/control function, optional relays (giving up to 7 in total),
optically isolated analog or digital re-transmission (including scaled pulse re-transmission) and
excitation voltage may also be provided.
Unless otherwise specified at the time of order, your PM4 has been factory set to a standard
configuration, see the function table for your selected mode for default settings.
Full electrical isolation between power supply, input voltage and re-transmission output is provided
by the PM4, thereby eliminating grounding and common voltage problems. This isolation feature
makes the PM4 ideal for interfacing to computers, PLCs and other data acquisition devices.
The PM4 series of Panel Mount Monitors are designed for high reliability in industrial applications.
The high brightness LED display provides good visibility, even in areas with high ambient light
levels.
PM4SSIMAN-2.2-0 3 of 36

2 Mechanical Installation
Choose a mounting position as far away as possible from sources of electrical noise such as motors,
generators, fluorescent lights, high voltage cables/bus bars etc. An IP65 or IP67 access cover which
may be installed on the panel and surrounds is available as an option to be used when mounting the
instrument in damp/dusty positions. A wall mount case is available, as an option, for situations
in which panel mounting is either not available or not appropriate. A portable carry case is also
available, as an option, for panel mount instruments.
Prepare a panel cut out of 45mm x 92mm +1 mm / – 0 mm (see diagram below). Insert the
instrument into the cut out from the front of the panel. From the rear of the instrument fit the
two mounting brackets into the recess provided (see diagram below). Whilst holding the bracket
in place, tighten the securing screws being careful not to over-tighten, as this may damage the
instrument. Hint: use the elastic band provided to hold the mounting bracket in place whilst
tightening securing screws.
92mm
45mm PANEL CUT OUT 92mm
45mm
PANEL
CUT
OUT
115mm
104mm
53mm
44mm
96mm
9mm
9.5mm
max
48mm
91mm
111mm
10mm
Mounting bracket
(2 off)
Horizontal mounting
Vertical mounting
(bar graph displays)
4 of 36 PM4SSIMAN-2.2-0

3 Electrical installation
3.1 Electrical installation
The PM4 Panel Meter is designed for continuous operation and no power switch is fitted to the
unit. It is recommended that an external switch and fuse be provided to allow the unit to be
removed for servicing.
The plug in, screw type, terminal blocks allow for wires of up to 2.5mm2to be fitted. Connect the
wires to the appropriate terminals as indicated below. Refer to connection details provided in this
chapter to confirm proper selection of voltage, polarity and input type before applying power to
the instrument.
When power is applied the instrument will cycle through a display sequence indicating the software
version and other status information, this indicates that the instrument is functioning. Acknowl-
edgement of correct operation may be obtained by applying an appropriate input to the instrument
and observing the reading. The use of screened cable is recommended for signal inputs.
For connection details of optional outputs refer to the separate ”PM4 Panel Meter Optional Output
Addendum” booklet supplied when options are fitted.
PM4SSIMAN-2.2-0 5 of 36

3.2 Electrical connection examples
If output options are fitted refer to the ”PM4 Panel Meter Optional Output Addendum” booklet
for connection details.
AC power connections - supply type is factory configured, check before connecting
1 2 3 4 5 6 7 8 9 10 11
Case earth
Neutral
Active
DC power connections (12 to 48VDC) - supply type is factory configured, check before connecting
Clock and signal connections between sensor and display
Maximum cable length: Maximum cable length is normally determined by the device being connected
to the PM4. Consult the handbook for the SSI device used for details of maximum cable length.
Notes: Twisted pair cable must be used for clock and data. refer to the SSI RAtE function for
details of clock frequency settings which may be required for long cable lengths and to the section
on link settings below.
3.3 Input Board Link Settings
Two links are fitted to the input board, these are LK1 and LK2. These links are used to bring
terminating resistors for the clock and data lines into or out of circuit. For long cable runs these
links should be in. The links are located close to the DATA A and B connector on the input circuit
board.
6 of 36 PM4SSIMAN-2.2-0

3.4 Input Output Configuration
If you need to alter the input or output configuration link settings proceed as follows:
Remove earth screw
which passes through the
case then slide out
the printed circuit board
1. Remove the plug in terminals
from the rear of the instrument
2. Remove the 4 x self tapping screws from
the back cover then remove the back cover
by pulling it away from the instrument
3. Remove the earth screw which passes
through the underside of the case then
slide out the board or boards
4. Configure the PCB links as requred, see appropriate chapter
5. Slide PCB back into case
6. Replace the earth screw which passes through the case
7. Refit the back cover and fix with the self tapping screws
8. Plug the terminal strips back into the rear of the instrument
PM4SSIMAN-2.2-0 7 of 36

4 Function tables - summary of setup functions
Note: the order in which the functions appear on the display may not be exactly as shown below.
The availability and order of functions is determined by choice of function settings and options
fitted.
Functions in this first table are available in FUNC or CAL mode
Display Function Range Default Your
record
Ref/Page
AxLo Low setpoint value for
designated alarm relay x
Any display
value or OFF
OFF See
4.1
5.1 /14
AxHi High setpoint value for
designated alarm relay x
Any display
value or OFF
OFF See
4.1
5.2 /14
AxHY Hysteresis value for the
designated alarm relay x.
0to 9999 10 See
4.1
5.3 /15
Axtt Trip time delay for the
designated alarm relay x.
0to 9999 0 See
4.1
5.4 /15
Axrt Reset time delay for the
designated alarm relay x.
0to 9999 0 See
4.1
5.5 /16
Axn.o
or
Axn.c
Alarm relay xaction to
normally open (de-energised) or
normally closed (energised)
Axn.o or
Axn.c
Axn.o See
4.1
5.6 /16
AxSP
or
Axt1
etc.
Relay operation independent
setpoint or trailing setpoint
(∗Optional)
AxSP or
Axt1 etc.
AxSP See
4.1
5.7 /16
P.SEt Preset value Any display
value
05.8 /17
brGt Display brightness level 1to 15 15 5.9 /17
duLL Display remote brightness
switching
0to 15 1 5.10 /17
bAr_ Bargraph low value (seen only
on bargraph display
instruments)
Any display
value
05.11 /18
bAr~ Bargraph high value (seen only
on bargraph display
instruments)
Any display
value
1000 5.12 /18
(∗Optional)—this function will only be accessible if the relevant option is fitted
8 of 36 PM4SSIMAN-2.2-0

Display Function Range Default Your
record
Ref/Page
bAr
tYPE
Bargraph type for instruments
with bargraph display (seen
only on bargraph display
instruments)
bAr,S.dot,
d.dot,
C.bAR or
r.dot
bAr 5.13 /18
dGOP Digital output option mode
(∗Optional)
bcd,b.SCL,
bin or bin2
bin2 5.14 /19
dG.OP Digital output option polarity
(∗Optional)
AIo or AHi AIo 5.15 /20
bcd
Strt
Digital output option BCD start
position (∗Optional)
0,1or 2 0 5.16 /20
diG_ Digital output option low value
(∗Optional)
Any display
value
05.17 /20
diG~ Digital output option high value
(∗Optional)
Any display
value
1000 5.18 /20
REC_ Analog output option low
display value (∗Optional)
Any display
value
05.19 /21
REC~ Analog output option high
display value (∗Optional)
Any display
value
1000 5.20 /21
drnd Display rounding 1to 5000 1 5.21 /21
dCPt Decimal point 0,0.1 etc. 05.22 /22
FLtr Digital filter 0to 8 2 5.23 /22
P.but Pbutton function NONE, Hi,
Lo, HILo,
ZERO or
P.SEt
NONE 5.24 /22
R.INP Remote input (external
input)function
NONE,
P.HLd,
d.HLd, Hi,
Lo , HiLo,
ZERO,
SP.Ac,
No.Ac, CAL.S
, P.SEt or
duLL
NONE 5.25 /23
ACCS Access mode OFF, EASY,
NONE or ALL
OFF 5.26 /24
SPAC Setpoint access mode
(∗Optional)
A1, A1-2 etc. A1 5.27 /24
INPt Display input scaling factor 1to any
positive display
value
15.28 /24
SCLE Display scaling factor 1to any
display value
15.29 /25
(∗Optional)—this function will only be accessible if the relevant option is fitted
PM4SSIMAN-2.2-0 9 of 36

SSI
bits
Number of input bits 1to 31 1 5.30 /25
SIGN Sign bit on or OFF OFF 5.31 /26
SSI
CodE
SSI code type bin or GRAY bin 5.32 /26
U.SCL User simple scaling method on or OFF OFF 5.33 /26
dISP
RAtE
Display update rate 1,2,4,8,16
or 32
45.34 /27
CLr
ZERO
Clear zero n/a n/a 5.35 /27
CLr
U.SCL
Clear user scale operation n/a n/a 5.36 /28
USER
SCLE
Two point live input scaling on or OFF OFF 5.37 /28
CAL1 First live input calibration
scaling point
Any display
value
n/a 5.38 /28
CAL2 First live input calibration
scaling point
Any display
value
n/a 5.39 /29
CAL
OFSt
Calibration offset Any display
value
n/a 5.40 /29
SEt
OPER
Set display operation SSI,bc 8 or
bc24
SSI 5.41 /30
SSI
RAtE
SSI clock frequency Lo or Hi Hi 5.42 /30
bAUd
RAtE
Baud rate for serial
communications (∗Optional)
300, 600,
1200, 2400,
4800, 9600,
19.2 or 38.4
9600 5.43 /30
PrtY Parity for serial communications
(∗Optional)
NONE, EUEN
or odd
NONE 5.44 /30
O.Put Output for serial
communications (∗Optional)
dISP, Cont,
POLL,A.buS
or M.buS
Cont 5.45 /31
Addr Instrument address for serial
communications (∗Optional)
0to 31 0 5.46 /31
(∗Optional)—this function will only be accessible if the relevant option is fitted
10 of 36 PM4SSIMAN-2.2-0

4.1 Relay table
Record your relay settings in the table below
Display Relay 1 Relay 2 Relay 3 Relay 4 Relay 5 Relay 6 Relay 7
AxLo
AxHi
AxHY
Axtt
Axrt
Axn.o or Axn.c
AxSP or Axt1 etc. n/a
Ax.rt,Ax.tL or Ax.PS
PM4SSIMAN-2.2-0 11 of 36

5 Explanation of functions
The PM4 setup and calibration functions are configured through a push button sequence. The
three push buttons located at the rear of the instrument (also at the front on some display options)
are used to alter settings. Two basic access modes are available:
FUNC mode (simple push button sequence) allows access to commonly set up functions such as
alarm setpoints.
CAL mode (power up sequence plus push button sequence) allows access to all functions including
calibration parameters.
Once CAL or FUNC mode has been entered you can step through the functions, by pressing and
releasing the Fpush button, until the required function is reached. Changes to functions are made
by pressing the or push button (in some cases both simultaneously) when the required function is
reached. See the flow chart example on the following page.
P F
P F P F
P F
P F
Entering ModeCAL Entering ModeFUNC
1. Remove power from
the instrument. Hold in the
button and reapply power.
The display will briefly indicate
as part of the
"wake up messages" when
the message is seen
you can release the
button. Move to step 2 below.
2. When the "wake up"
messages have finished
and the display has settled
down to its normal reading
press, then release the
button.
Move to step 3 below.
1. When the "wake up"
messages have finished
and the display has settled
down to its normal reading
press, then release the
button.
3. Within 2 seconds of
releasing the button
press, then release
the and buttons
together. The display will
now indicate followed
by the first function.
2. Within 2 seconds of
releasing the button
press, then release
the and buttons
together. The display will
now indicate followed
by the first function.
^
^
^^
FUNC
FUNC
F
F
F
FF
CAL
CAL
Note: If step 1 above has been completed then the
instrument will remain in this mode state until
power is removed. i.e. there is no need to repeat step 1
when accessing function unless power has been removed.
CAL
No special power up procedure
is required to enter mode.FUNC
12 of 36 PM4SSIMAN-2.2-0

Example: Entering FUNC mode to change alarm 1 high function A1Hi from OFF to 100
F U N C
F U N C End
A1Hi OFF
100
Press & release
Press & release Press & release
Press & release
Press & release F
^until
FP For until
Funtil
then press ^v
Example: Entering CAL mode to change decimal point function dCPt from 0to 0.02
F U N C
F U N C End
dCPt
CAL
0
.0 0 2
Press & release
Press & release Press & release
Press & release
Press & hold Release
Hold
Press & release F
^until
FP For until
Funtil
FF
Funtil
then press ^v
Switch off
instrument
Switch on
instrument
Easy alarm relay adjustment access facility
The display has an easy alarm access facility which allows access to the alarm setpoints simply by
pressing the Fbutton at the front or rear of the instrument. The first setpoint will then appear
and changes to this setpoint may be made to this setpoint via the ^or vbuttons. Press the
Fbutton to accept any changes or to move on to the next setpoint. Note: this easy access also
functions in the same manner for the PI control setpoint (relay and/or analog PI output) if PI
control is available. The instrument must be set in the manner described below to allow the easy
access facility to work:
1. The R.INP function must be set to SPAC or the ACCS function must be set to EASY.
2. At least one alarm must have a setpoint, nothing will happen if all the alarm setpoints are
set to OFF.
3. The SPAC function must be set to allow access to the relays required e.g. if set to A1-2
then the easy access will work only with alarm relays 1 and 2 even if more relays are fitted.
4. The instrument must be in normal measure mode i.e. if the instrument is powered up so that
it is in CAL mode then the easy access will not function. If in doubt remove power from the
instrument, wait for a few seconds then apply power again.
5. If the easy access facility is used then the only way to view or alter any other function
settings is to power up via CAL mode i.e. there is no entry to FUNC mode functions unless
the instrument is powered up in CAL mode.
PM4SSIMAN-2.2-0 13 of 36

5.1 Alarm relay low setpoint
Display: AxLo
Range: Any display value or OFF
Default Value: OFF
Displays and sets the low setpoint value for the designated alarm relay x. Note xwill be replaced
by the relay number when displayed e.g. A1Lo for relay 1. Use this low setpoint function if a
relay operation is required when the display value becomes equal to or less than the low setpoint
value. To set a low alarm value go to the AxLo function and use the ^or vpush buttons to set
the value required then press Fto accept this value. The low alarm setpoint may be disabled by
pressing the ^and vpush buttons simultaneously. When the alarm is disabled the display will
indicate OFF. If the relay is allocated both a low and high setpoint then the relay will activate
when the value displayed moves outside the band set by the low and high setpoints. The value at
which the relay will reset is controlled by the AxHY function.
Example:
If A1Lo is set to 10 then relay 1 will activate when the display value is 10 or less.
Display Value
Time
A Lox
A HYxvalue
A Lo
A HY
x
x
plus
Relay
activates
at this value
or below
Relay
resets
above this
value
Alarm low operation with hysteresis
5.2 Alarm relay high setpoint
Display: AxHi
Range: Any display value or OFF
Default Value: OFF
Displays and sets the high setpoint value for the designated alarm relay x. Note xwill be replaced
by the relay number when displayed e.g. A1Hi for relay 1. Use this high setpoint function if a
relay operation is required when the display value becomes equal to or more than the low setpoint
value. To set a high alarm value go to the AxHi function and use the ^or vpush buttons to
set the value required then press Fto accept this value. The high alarm setpoint may be disabled
by pressing the ^and vpush buttons simultaneously. When the alarm is disabled the display
will indicate OFF. If the relay is allocated both a low and high setpoint then the relay will activate
when the value displayed moves outside the band set by the low and high setpoints. The value at
which the relay will reset is controlled by the AxHY function.
Example:
If A1Hi is set to 100 then relay 1 will activate when the display value is 100 or higher.
14 of 36 PM4SSIMAN-2.2-0

Display Value
Time
A Hix
A Hi
A HY
x
x
minus Relay
activates
at this value
or above Relay
resets
below this
value
A HYxvalue
Alarm high operation with hysteresis
5.3 Alarm relay hysteresis (deadband)
Display: AxHY
Range: 0to 9999
Default Value: 10
Displays and sets the alarm relay hysteresis limit for the designated relay x. Note xwill be replaced
by the relay number when displayed e.g. A1HY for relay 1. To set a relay hysteresis value go to the
AxHY function and use the ^or vpush buttons to set the value required then press Fto accept
this value. The hysteresis value is common to both high and low setpoint values. The hysteresis
value may be used to prevent too frequent operation of the relay when the measured value is rising
and falling around setpoint value. e.g. if A1HY is set to zero the alarm will activate when the
display value reaches the alarm setpoint (for high alarm) and will reset when the display value falls
below the setpoint, this can result in repeated on/off switching of the relay at around the setpoint
value.
The hysteresis setting operates as follows: In the high alarm mode, once the alarm is activated
the input must fall below the setpoint value minus the hysteresis value to reset the alarm. e.g. if
A1Hi is set to 50.0 and A1Hy is set to 3.0 then the setpoint output relay will activate once the
display value goes to 50.0 or above and will reset when the display value goes below 47.0 i.e. at
46.9 or below. In the low alarm mode, once the alarm is activated the input must rise above the
setpoint value plus the hysteresis value to reset the alarm. e.g. if A1Lo is to 20.0 and A1Hy
is set to 10.0 then the alarm output relay will activate when the display value falls to 20.0 or
below and will reset when the display value goes above 30.0 i.e at 30.1 or above. The hysteresis
units are expressed in displayed engineering units.
Example: If A1Hi is set to 100 and A1HY is set to 10 then relay 1 will activate when the
display value is 100 or higher and will reset at a display value of 89 or lower.
5.4 Alarm relay trip time
Display: Axtt
Range: 0to 9999
Default Value: 0
Displays and sets the alarm trip time in seconds. The trip time is common for both alarm high and
PM4SSIMAN-2.2-0 15 of 36

low setpoint values. The trip time provides a time delay before the alarm relay will activate when
an alarm condition is present. The alarm condition must be present continuously for the whole trip
time period before the alarm will activate. If the input moves out of alarm condition during this
period the timer will reset and the full time delay will be restored. This trip time delay is useful
for preventing an alarm trip due to short non critical deviations from setpoint. The trip time is
selectable over 0to 9999 seconds. To set a trip time value go to the Axtt function and use the
^or vpush buttons to set the value required then press Fto accept this value.
Example: If A1tt is set to 5seconds then the display must indicate an alarm value for a full 5
seconds before relay 1 will activate.
5.5 Alarm relay reset time
Display: Axrt
Range: 0to 9999
Default Value: 0
Displays and sets the alarm reset delay time in seconds. The reset time is common for both alarm
high and low setpoint values. With the alarm condition is removed the alarm relay will stay in
its alarm condition for the time selected as the reset time. If the input moves back into alarm
condition during this period the timer will reset and the full time delay will be restored. The reset
time is selectable over 0to 9999 seconds. To set a reset time value go to the Axrt function and
use the ^or vpush buttons to set the value required then press Fto accept this value.
Example: If A1rt is set to 10 seconds then the resetting of alarm relay 1 will be delayed by 10
seconds.
5.6 Alarm relay normally open/closed
Display: Axn.o or Axn.c
Range: Axn.o or Axn.c
Default Value: Axn.o
Displays and sets the setpoint alarm relay xaction to normally open (de-energised) or normally
closed (energised), when no alarm condition is present. Since the relay will always open when power
is removed a normally closed alarm is often used to provide a power failure alarm indication. To
set the alarm relay for normally open or closed go to the Axn.o or Axn.c function and use the ^
or vpush buttons to set the required operation then press Fto accept this selection. Example:
If set to A1n.o alarm relay 1 will be open circuit when the display is outside alarm condition and
will be closed (short circuit across terminals) when the display is in alarm condition.
5.7 Alarm relay setpoint or trailing operation
Display: AxSP or Axt1 etc.
Range: AxSP or Axt1 etc.
Default Value: AxSP
Relay operation independent setpoint or trailing setpoint, this function only be seen where more
than one relay is fitted. Each alarm relay, except relay 1, may be programmed to operate with
16 of 36 PM4SSIMAN-2.2-0

an independent setpoint value or may be linked to operate at a fixed difference to another relay
setpoint, known as trailing operation. The operation is as follows:
Alarm 1 (AI) is always independent. Alarm 2 (A2) may be independent or may be linked to
Alarm 1. Alarm 3 (A3) may be independent or may be linked to Alarm 1 or Alarm 2. Alarm 4
(A4) may be independent or may be linked to Alarm 1, Alarm 2 or Alarm 3. The operation of
each alarm is selectable by selecting, for example, (Alarm 4) A4.SP = Alarm 4 normal setpoint
or A4.t1 = Alarm 4 trailing Alarm 1 or A4.t2 = Alarm 4 trailing Alarm 2 or A4.t3 = Alarm
4 trailing Alarm 3. For trailing set points the setpoint value is entered as the difference from the
setpoint being trailed. If the trailing setpoint is to operate ahead of the prime setpoint then the
value is entered as a positive number and if operating behind the prime setpoint then the value is
entered as a negative number.
Example: With Alarm 2 set to trail alarm 1, if A1Hi is set to 1000 and A2Hi is set to 50
then Alarm 1 will activate at 1000 and alarm 2 will activate at 1050 (i.e. 1000 + 50). If Alarm
2 had been set at -50 then alarm 2 would activate at 950 (i.e. 1000 – 50).
5.8 Preset value
Display: P.SEt
Range: Any display value
Default Value: 0
Displays and sets the preset value, this function will not be seen unless either the R.INP or P.SEt
function is set to P.SEt. The preset value can be used via the remote input or the front panel P
button to force the display to go to the preset value. A change in the input value will then cause
the display to rise or fall from the preset value. To use the remote input to operate the preset
functions set the R.INP value to P.SEt. To use the Pbutton to operate the preset function set
the P.but function to P.SEt.
5.9 Display brightness
Display: brGt
Range: 1to 15
Default Value: 15
Displays and sets the digital display brightness. The display brightness is selectable from 1to 15,
where 1= lowest intensity and 15 = highest intensity. This function is useful for improving the
display readability in dark areas or to reduce the power consumption of the instrument. See also
the duLL function. To set brightness level go to the brGt function and use the ^or vpush
buttons to set the value required then press Fto accept this value.
5.10 Display remote brightness switching
Display: duLL
Range: 0to 15
Default Value: 1
Displays and sets the level for remote input brightness switching, see R.INP function. When a
remote input is set to duLL the remote input can be used to switch between the display brightness
PM4SSIMAN-2.2-0 17 of 36

level set by the brGt function 5.9 and the display brightness set by the duLL function. The
display dull level is selectable from 0to 15, where 0= lowest intensity and 15 = highest intensity.
This function is useful in reducing glare when the display needs to be viewed in both light and
dark ambient light levels. To set dull level go to the duLL function and use the ^or vpush
buttons to set the value required then press Fto accept this value.
Example: With duLL set to 4and brGt set to 15 and the R.INP function set to duLL the
display brightness will change from the 15 level to 4when a switch connected to the remote input
terminals is activated.
5.11 Bargraph low value
Display: bAr_
Range: Any display value
Default Value: 0
Seen only in bargraph display instruments. Displays and sets the bar graph low value i.e. the value
on the 7 segment display at which the bargraph will start to rise. This may be independently set
anywhere within the display range of the instrument. Note: The bAr_ and bAr~ settings are
referenced from the 7 segment display readings, not the bargraph scale values. The bargraph scale
may scaled differently to the 7 segment display. For example the bargraph scale may be indicating
percentage fill of a tank whilst the 7 segment display is indicating actual process units. To set
bargraph low level go to the bAr_ function and use the ^or vpush buttons to set the value
required then press Fto accept this value.
5.12 Bargraph high value
Display: bAr~
Range: Any display value
Default Value: 1000
Seen only in bargraph display instruments. Displays and sets the bar graph high value i.e. the value
on the 7 segment display at which the bargraph will reach its maximum indication (e.g. all LEDs
illuminated). May be independently set anywhere within the display range of the instrument. To
set bargraph high level go to the bAr~ function and use the ^or vpush buttons to set the
value required then press Fto accept this value.
5.13 Bargraph type for instruments with bargraph display
Display: bAr tYPE
Range: bAr,S.dot,d.dot,C.bAR or r.dot
Default Value: bAr
Bar graph display operation mode - seen only in vertical or circular bargraph display instruments.
Allows selection of bargraph operation mode. Choices available are:
•bAr - conventional solid bargraph display i.e. all LEDs illuminated when at full scale. When
scaling the display use the bAr_ and bAr~ functions e.g. bAr_ =0and bAr~ =
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100 will give a bargraph with no segments lit at a 7 segment display reading of 0and all
segments lit with a 7 segment display reading of 100.
•S.dot - single dot display. A single segment will be lit to indicate the input readings position
on the scale. When scaling the display use the bAr_ and bAr~ functions e.g. bAr_
=0and bAr~ =100 will give a bargraph with the bottom segment lit at a 7 segment
display reading of 0and the top segment lit with a 7 segment display reading of 100. Note:
this could also be set up as a centre zero single dot display by entering a negative value and
positive value. e.g. bAr_ =-100,bAr~ =100.
•d.dot - double dot display. Two segments will be lit to indicate the input reading position
on the scale. The reading should be taken from the middle of the two segments. When scaling
the display use the bAr_ and bAr~ functions e.g. bAr_ =0and bAr~ =100 will
give a bargraph with the bottom two segments lit at a 7 segment display reading of 0and
the top two segments lit with a 7 segment display reading of 100. Note: this could also be
set up as a centre zero double dot display by entering a negative value and positive value.
e.g. bAr_ =-100,bAr~ =100.
•C.bAr - centre bar display. The display will be a solid bargraph but will have its zero point
in the middle of the display. If the seven segment display value is positive the bargraph will
rise. If the seven segment display value is negative then the bargraph will fall. When scaling
the display use the bAr_ and bAr~ functions e.g. bAr_ =0and bAr~ =100
will give a bargraph with all the bottom half segments lit at a 7 segment display reading of
-100 and all the top segments lit with a 7 segment display reading of 100.
•r.dot - modulus or wrap around single dot bargraph. This mode of operation allows the
bargraph to wrap around the limits set by the bAr_ and bAr~ functions by dividing
the 7 segment display by the modulus (the modulus is the difference between 0 and bAr~
) and displaying the remainder. For example if bAr_ is set to 0and bAr~ is set to
10 then in other bargaph modes when the 7 segment display reads a value such as 25 the
bargraph would be stuck at the high limit of its travel since it cannot go beyond 10. In
r.dot mode the display will wrap around at 10 then continue up the bar again and will be
at the midpoint of the bargraph when the 7 segment display shows 25 (as it would for a 7
segment display of 15,35, etc.). In this example for a 7 segment display of 25 the value of
25 is divided by the modulus value of 10 in this example and the remainder displayed i.e. 10
goes into 25 twice with the remainder of 5 and so a bargaph position of 5 is displayed. This
mode will operate on both vertical and circular bargraph type displays.
5.14 Digital output option mode
Display: dGOP
Range: bcd,b.SCL,bin or bin2
Default Value: bin2
Seen only with the 16 bit digital output option. Refer to the separate “PM4 Panel Meter Optional
Output Addendum” booklet supplied when this option is fitted. Selections available are: bin2
(signed binary) i.e. -32767 to 32767, bin (unsigned binary) i.e. 0 to 65535, b.SCL (scaled binary,
see diG_ and diG~ below), bcd (binary coded decimal) i.e. up to four BCD numbers. .
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5.15 Digital output option polarity
Display: dG.OP
Range: AIo or AHi
Default Value: AIo
Seen only with the 16 bit digital output option. Refer to the separate “PM4 Panel Meter Optional
Output Addendum” booklet supplied when this option is fitted. Selections available are: AIo
(active low i.e. logic 1 = 0V output, logic 0 = +V output) or AHi (active high i.e. logic 1 = +V
output, logic 0 = 0V output).
5.16 Digital output option BCD start position
Display: bcd Strt
Range: 0,1or 2
Default Value: 0
Seen only with the 16 bit digital output option. Refer to the separate “PM4 Panel Meter Optional
Output Addendum” booklet supplied when this option is fitted. This function affects BCD mode
only and determines the number of digits to skip when outputting from the display. As the output
is 16 bit it can output up to 4 BCD numbers. Select from 0to number of display digits minus 4.
e.g. for a 6 digit display you may select 0to 2, if 2is selected then the four left most digits will
be output, if set to 0then the four right most digits will be output.
5.17 Digital output option low value
Display: diG_
Range: Any display value
Default Value: 0
Seen only with the 16 bit digital output option. Refer to the separate “PM4 Panel Meter Optional
Output Addendum” booklet supplied when this option is fitted. Accepts any valid display value.
Determines the low scaling point for the b.SCL mode and has no effect on other modes. See
example which follows in 5.18.
5.18 Digital output option high value
Display: diG~
Range: Any display value
Default Value: 1000
Seen only with the 16 bit digital output option. Refer to the separate “PM4 Panel Meter Optional
Output Addendum” booklet supplied when this option is fitted. Determines the high scaling point
for the b.SCL mode and has no effect on other modes.
Example: If diG_ is set to 0and diG~ is set to 65535 (216 −1) then the retransmission
will not be scaled i.e. a display of 2will cause a retransmission of 2. If diG~ is now changed to
32767 (215 −1) then a display of 2will cause a retransmission of 4 (note: rounding may occur
on retransmission).
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