Baer UniMod GSM-3+ User manual

UniMod GSM-3+
Modem
Operation Manual E1300107207063
Bär Industrie-Elektronik GmbH
Rathsbergstr. 23
D-90411 Nürnberg
Germany
Phone : [phone]
Fax: [phone]
Internet:
www.baer
-
gmbh.com

UniMod GSM-3+
2
COPYRIGHT
Copyright © 2007 BÄR Industrie-Elektronik GmbH. All rights, including those
originating from translation, (re)-printing and copying of this document or parts thereof are
reserved. No part of this manual may be copied or distributed by electronic, mechanic,
photographic or indeed any other means without prior written consent of BÄR
Industrie-Elektronik GmbH. All names of products or companies contained in this document
may be trademarks or trade names of their respective owners.
Note
Based on its policies, BÄR Industrie-Elektronik GmbH develops and improves their
products on an ongoing basis. In consequence, BÄR Industrie-Elektronik GmbH
preserve the right to modify and improve the software product described in this document.
Specifications and other information contained in this document can change without prior notice.
This document does not cover all functions in all possible detail or variations that may be
encountered during installation, maintenance and usage of the software.
Under no circumstances whatsoever will BÄR Industrie-Elektronik GmbH accept
any liability for mistakes in this document or for any sub sequential damage arising from
installation or usage of the software.
BÄR Industrie-Elektronik GmbH preserves the right to modify or withdraw this
document at any time without prior announcement.
BÄR Industrie-Elektronik GmbH does not accept any responsibility or liability for the
installation, usage, maintenance or support of third party products.
Printed in Germany

UniMod GSM-3+
3
Table of contents
Page
1 General.............................................................................................................................5
1.1 Requirements...........................................................................................................5
2 Safety Precautions for the User .....................................................................................6
3 Power Supply Unit...........................................................................................................7
4 Interfaces .........................................................................................................................8
5 Display ........................................................................................................................... 10
6 Installation Hints............................................................................................................11
7 Programming the Modem..............................................................................................12
7.1 Testing the connection ...........................................................................................17
7.2 Unusual reaction using "7" data bits and "Even Parity" during data retrieval........... 17
8 Additional Functions.....................................................................................................18
8.1 Reset......................................................................................................................18
8.2 Signal Quality .........................................................................................................19
8.3 SMS .......................................................................................................................20
8.4 Automatic baud rate adaption.................................................................................21
8.5 Temporary Baud Rate Switching ............................................................................24
9 Technical Data ...............................................................................................................25
10 Inserting the Interface Modules.................................................................................... 27
11 Terminal Block............................................................................................................... 28

UniMod GSM-3+
4

UniMod GSM-3+
Chapter 1 General 5
1 General
The world-wide GSM radio networks (GSM = Global System for Mobile
communication) provide besides digital voice communication the possibility
to transmit data. In that operation mode is it possible to send fax, data
(CSD: Circuit Switched Data connection), GPRS: General Packet Radio
Service) and short messages (SMS). The universal radio modem UniMod
GSM-3+ is supposed for remote inquiry of measurement data of any kind,
especially however for telecounting applications.
1.1 Requirements
The UniMod GSM-3+ can be used in any GSM 900/1800/1900 MHz
network with an arbitrary number of providers. It requires however the
infrastructure for operating mobile stations with 2 Watt (EGSM900) or
1 Watt (GSM1800/1900) transmission power. The modem supports an
interface for 3V SIM cards. For communication a SIM card with call number
for 9600 Baud transmission is needed.
For the UniMod GSM-3+ communication modules produced by
internationally renowned companies are used. These companies update
their software packages regularly and add or change features. The
software releases are continuously checked by the development
department, but no responsibility for this software releases can be take
over except of warranty granted by the module producer.

UniMod GSM-3+
6 Chapter 2 Safety Precautions for the User
2 Safety Precautions for the User
Aircraft safety
Cellular engines can interfere with an aircraft’s navigation system and its
cellular network. The use of UniMod GSM-3+ on board aircraft is forbidden
by law. Failure to comply with this prohibition may lead to temporary
suspension or permanent cancellation of cellular engine services for the
person who infringes this prohibition and/or to legal action against said
person.
Environments with explosive substances
a) Users are advised not to use the device in automotive service stations.
b) Users are reminded of the necessity to comply with restrictions regarding
the use of radio devices in fuel depots, chemicals plants and locations
where explosives are ignited.
Non-ionising radiation
As is the case with other mobile radio transmitters, operating personnel are
advised to use the device in the normal operating position only in order to
ensure optimum performance and safety. Avoid touching the antenna.
Personnel
Installation and repairing should be done by experienced personnel only.
Connecting to other devices
In order to connect the UniMod GSM-3+ to another device please read the
device’s operation manual to obtain detailed information about safety. Don’t
connect devices, which are not approved by manufacturer.
Precautions in the event of loss/theft of the Cellular Engine and
the SIM card
If your UniMod GSM-3+, your SIM card or both go missing, notify your
network operator immediately in order to avoid misuse.

UniMod GSM-3+
Chapter 3 Power Supply Unit 7
3 Power Supply Unit
The modem is equipped with a built-in, low-loss switched power supply,
which enables it to operate on a wide-range AC or DC supply voltage.
•80VAC to 270VAC (50/60Hz) or 60VDC to 375VDC
•Alternative: 12VDC to 15VDC (0,8A)
Attention: NEVER remove the interface modules or the SIM card when the device
is powered! The card and especially it’s contact pads can be damaged
very easily by scratches or bending. Be careful when inserting or
removing it.

UniMod GSM-3+
8 Chapter 4 Interfaces
4 Interfaces
Communication is possible with many standard protocols, like SCTM,
LSV1, DLMS, IEC1107, IEC60870 (transparent reading) etc.
80VAC - 270VAC (50/60Hz)
60VDC - 375VDC
4 6 7
5 8
1
20mA
active
cartridge
SMS RS232 RS485
2-/4-wire
tp tm CTS RTS
S
e
r
v
i
c
e
optional
1
10
connector RJ48
UE
UA DTR DCD
The following internal (on-board) interfaces in UniMod GSM-3+ are
available:
tp CTS tm RTS
20mA (CS, current loop) active for 4 devices max.
Can be enabled via jumpers „tp“ and „tn“. This interface supports “echo
suppression” and can be operated without load (terminal open).
120R Y Z RI
RS232 (RxD, TxD, DTR, DCD, DSR/RI, GND).
external cables RTS and CTS can be bypassed using jumper “Y-Z”.
120 R Y Z RI
RS485 (2 or 4 wires).
Can be enabled via jumpers „Y“ and „Z“. If a two-wire connection is used
terminal (+) A must be connected (short-cut) with Y and (-) B with Z.
Using the UniModSet program the user can determine the functionality of
the RS485 interface (2-wire, 4-wire or disabled).
RS485 (2 wires): RS485 (4 wires):
120
Ω
120R Y Z
B-Z-Y+A+
10
741
RJ48
RS485-2
B-
A+
GSM 900 / 1800
(GPRS)
120
Ω
120R Y Z
B-Z-Y+A+
10
7
4
1
RJ48
RS485-4
B-
A+
Z-
Y+
GSM 900 / 1800
(GPRS)

UniMod GSM-3+
Chapter 4 Interfaces 9
In the UniMod GSM-3+ modem an additional slot is available for another
interface module. For this slot the following module types are available
(installation: see page 27):
tp CTS tm RTS
20mA (CS, current loop) active (for 4 devices max.) or passive;
if the 20mA interface is active it must be operated either with a load or its
terminals must be short-cut.
tp CTS tm RTS
RS232 (RxD, TxD, CTS, RTS, GND);
If RTS/CTS lines are used, the internal 20mA interface must de deactivated.
(Set jumper “CTS” and “RTS” instead of “tp” and “tm”.)
tp CTS tm RTS
RS485 (2 wires);
tp CTS tm RTS
RS485 (4 wires);
When the 4-wire interface is used, the internal 20mA interface must de
deactivated. (Set jumper “CTS” and “RTS” instead of “tp” and “tm”.)
tp CTS tm RTS
M-Bus active (for 10 devices max.) or passive;
Please note: All interfaces are internally connected with each other. Therefore all
attached devices receive the same data from the interface. It must be
ensured that never two or more devices send data at the same time.
Example demonstrating different kinds of connection:
80 - 270 VAC
60 - 375 VDC
20mA/CS
GSM 900 / 1800
(GPRS)
XXXXXXXXXXXXXX XXXXXXX
18765432
GSM
RJ48
8 9
UniMod GSM-3+
Interface: RS232
Baudrate: 9600 8n1
80VAC - 270VAC 50/60Hz, 60VDC - 375VDC
2007
M-BUS
SMS
XXXXXXX
XXXXXXX
XXXXXXX
RS485
RS232

UniMod GSM-3+
10 Chapter 5 Display
5 Display
Some of LED’s display the current operating status of the modem and give
information about the data transfer
• Power signals, that the modem is supplied with power.
• GSM permanently off: power down mode
600 ms on / 600 ms off: Limited Network Service: No SIM card
inserted or no PIN entered, or network search in progress, or
ongoing user authentication, or network login in progress
75 ms on / 3 s off: IDLE mode: The mobile is logged to the network
(monitoring control channels and user interactions); no call in
progress
permanently on: CSD call: Connection to remote party
• INF Information: 3 LEDs showing processor status and field strength.
Modem is ready for programming, data transmission and call
answering not before the leftmost INF-LED is on.
This happens
- in CSD mode (GSM dial-up connection): about 15 seconds after
“Power On”
- in GPRS mode: about 30 seconds after “Power On”
•RI lights, when the modem rings
•DCD lights, when the modem has built a data link to remote station
•TxD lights, when data is transferred from modem to target device (e.g.
meter)
•RxD lights, when data is transferred from target device to modem

UniMod GSM-3+
Chapter 6 Installation Hints 11
6 Installation Hints
The installation must be done in a way, that even in the case of cable break
no dangerous voltages are applied to touchable parts of the device
including the antenna. This can be accomplished e.g. by using cable ties
and appropriate shortening of the cables.
For installation insert the SIM card correctly and tighten it by using the
clamp of the card reader:
1) First open the clamp by shifting
the slide in the arrow’s direction
(OPEN). After release you can open
the lid and insert the SIM card as
shown in the picture. Please note
the position of the bevelled edge: it
must point at the lower-right side.
The golden contact pads have to
point downwards.
.
2) Insert the card until the lid can be
closed as shown in the picture. The
slide must be movable in this
position. Please note the position of
the bevelled edge. Now move the
slide against the arrow’s direction
until it clicks into place and the lid is
locked. The SIM card is now ready
to use.
3) After that connect the antenna to the UniMod GSM-3+ using the FME
plug.
At last (important!) connect it to the supplying power.

UniMod GSM-3+
12 Chapter 7 Programming the Modem
7 Programming the Modem
Before installing the modem it has to be programmed in order to meet the
demands. The baud rate and data format for connecting the target device
and the transmission mode and transmission rates must be adjusted. On
delivery the following default parameters are active:
Data rate 9600 Bit/sec (if not differently mentioned)
Data format 7, Even, 1 (if not differently mentioned)
S0=1 This parameter setting determines the number of rings (here 1) before
automatic answering.
&D0 This parameter determines how the modem responds when circuit 108/2
(DTR) is changed from ON to OFF during data mode. With setting 0 the
modem ignores DTR.
E0 This setting determines whether or not the modem echoes characters
received from PC during command state. (0 = no echo)
Q0 V0 Information response: numeric code
+IPR=19200 Internal baud rate: don’t change this value!
+CBST=7,0,1 The modem selects the bearer service with data rate 9600 Baud,
asynchronous, non-transparent mode to be used when data calls are
originated.
This configuration allows for reading standard meters according to VDEW2
(IEC 1107 / IEC62056-21). If you want to change this parameters, you need
a PC with terminal software UniModSet/MetcomTSet. Moreover
experiences with the Hayes AT modem command set are very
recommended. To establish connection between PC and modem you have
to use the RS232-Service interface (A) or a parametering adapter (B),
Alternatively you can use a converter („converter box“) in order to adapt the
interfaces.
A) Service interface: Standard
RS232 cable with 9 pole plug
(Standard RS232, Order No.:
#4301).

UniMod GSM-3+
Chapter 7 Programming the Modem 13
B) The parametering adapter, which can be plugged instead of an interface
module. This adapter can be ordered as accessory (Order No.: #9177).
1) First set the switch to position
"←GSM", as shown in the picture.
Then connect the 25 pole plug
(RS232) to the PC.
2) Disconnect the modem from the
supply (important!) and remove the
interface module..
3) Insert the 7 pole plug of the
parametering adapter instead of
the interface module. The notch
must point in direction of the
modem module.
4) After programming switch off the UniMod and insert the interface
module carefully again.
Now you have to set your terminal program to the fixed, local data rate and
data format of the UniMod. (Default values: 9600 Bit/sec, 7,E,1) Use one of
the AT commands (e.g. ATS0?, ATI, AT&V) in order to check whether the
modem answers. If you see the answer on the screen, the interface is
working correctly.


Simply typing „AT“ does not result in an answer, because the modem
is by default programmed not to send messages and echoes
(Parameters ATQ1 and ATE0).

UniMod GSM-3+
14 Chapter 7 Programming the Modem
Following some examples of AT commands (the answers depend upon the
respective firmware version):
Request Answer Description
at&v ACTIVE PROFILE:
E0 Q0 V1 X4 &C1 &D2 &S0 \Q3
S0:001 S3:013 S4:010 S5:008
S6:000 S7:060 S8:000 S10:002
S18:000
+CBST: 7,0,1
+CRLP: 61,61,78,6
+CR: 0
+FCLASS: 0
+CRC: 0
+CMGF: 1
+CSDH: 0
+CNMI: 0,0,0,0,1
+ILRR: 0
+IPR: 19200
+CMEE: 0
^SMGO: 0,0
+CSMS: 0,1,1,1
^SACM: 0,"000000","000000"
^SCKS: 0,1
+CREG: 0,1
+CLIP: 0,2
+CAOC: 0
+COPS: 0,0,"E-Plus"
+CGSMS: 3
Inquires current configuration
ati SIEMENS
MC55
REVISION xx.xx
Requests product information
at+cpin? code
OK
SIM card inquiry
(code = ERROR: no/faulty SIM card
code = +CPIN: SIM PIN: waiting for PIN
code = +CPIN: READY: PIN active)
at+cpin=n OK Enter PIN, switches modem active.
e.g. AT+CPIN="1234" (if PIN is 1234)
at+clck=
"SC",0,"n"
OK Disable PIN lock after power off. (n = PIN)
e.g. AT+CLCK="SC",0,"1234"
Attention: First enter PIN using AT+CPIN.
at+cops? +COPS: 0,0,"Netzbetreiber"
OK
Inquire bearer service. Will be shown only,
when SIM card is active and antenna
connected.
at+cops=? +COPS:
(2,"E-Plus",,"26203"),
List of available bearer services.

UniMod GSM-3+
Chapter 7 Programming the Modem 15
Request Answer Description
(3,"Vodafone.de",,"26202"),
(3,"o2 - DE",,"26207"),
(3,"T-Mobile D",,"26201"),,(0-
4),(0,2)
at+cbst=s,
n,e
OK Choose transmission mode
(speed s=1 for 300 Bit/sec V.21, s=2 for 1200
V.22, s=3 for 1200/75 V.23, s=4 for 2400
V.22bis, s=5 for 2400 V.26ter, s=6 for 4800
V.32, s=7 for 9600 V.32, s=65 for 300 V.110,
s=66 for 1200 V.110, s=68 for 2400 V.110,
s=70 for 4800 V.110, s=71 for 9600 V.110),
(name n=0 for asynchronous mode),
(element e=0 for transparent oder e=1 for non
transparent transmission)
e.g.. at+cbst=7,0,1 (for 9600 Bit/sec V.32,
asynchronous mode, non transparent)
at&f OK Set all parameters to factory defaults.
ats0=n OK This parameter setting determines the number
of rings (0 to 255) before automatic
answering.
e.g. ats0=1 (Modem answers after first ring)
Attention: s0=0 disables automatic
answering.
ats0? 1
OK
Returns the number of rings before automatic
answering.
ate0 OK This disables the modem to send echoes of
characters received from PC during command
state.
atq1 (no answer) This parameter setting disables transmission
of result codes to the PC. Information text
transmitted in response is not affected by this
setting.
at&w (no answer because of ATQ1) Saves the current parameter setting in the
user-defined profile. This settings are active
after every resumption of power supply.

UniMod GSM-3+
16 Chapter 7 Programming the Modem
Example:
•Establish connection PC to modem (e.g. using the parametering
adapter)
•Insert SIM card
•Switch on UniMod GSM-3+, wait 15 to 30 sec: till first LED is on
•Start the UniModSet software
•Read the equipment configuration:
•Adjust the parameter
Hint: Mind to set the functionality of the internal RS485 interface correctly !
•Write the configuration
•Enable or disable the PIN via SIM-Card function
•Check the signal quality: possible only in CSD-Mode:

UniMod GSM-3+
Chapter 7 Programming the Modem 17
7.1 Testing the connection
For easier diagnosis of connection problems it is possible to display
extended result codes for incoming call indication. In order to do this the
following steps are necessary:
•Activate result codes: Enter „ATQ0“, Modem reply: OK.
•Activate extended result codes: „AT+CRC=1“, Modem reply: OK.
(„AT+CRC=0“ switches the extended codes off)
•Call UniMod GSM-3+ via data service (use appropriate telephone number).
Watch incoming call using terminal program.
Possible messages:
+CRING: REL ASYNC
incoming call has been correctly transmitted. That’s OK
+CRING: VOICE
incoming call has been transmitted via „voice“ mode. Call rejected by
modem.
+CRING: FAX
incoming call has been transmitted via „fax“ mode. Call rejected by modem.
7.2 Unusual reaction using "7" data bits and "Even Parity" during
data retrieval.
Depending on certain circumstances (software configuration, hardware
configuration of the PC, connection of the modem to the PC, operating
system,...) the communication software of your application might issue a
message like: wrong parity. In the most cases a switch of the UniMod
GSM-3+ data format from "7E1" to "8N1" is able to bring fast and easy
help. Using this configuration data retrieval from most meters is possible in
the format "7E1" and "8N1".
When data format „7E1“ is used the correct parity can be transmitted
automatically (Set tick ) or not (Setting ) .
If there are any further questions we are happy to help you.

UniMod GSM-3+
18 Chapter 8 Additional Functions
8 Additional Functions
8.1 Reset
Optional it is possible to activate the time-controlled modem-reset. With this
turned on the modem (MC55-Module) is regularly deactivated by the
internal firmware. After the reset it logs on to the PLMN (Public Land Mobile
Network) again. Activating is recommended when the field-strength of the
used GSM-net is very low. This functionality can be enabled using the
UniModSet/MetcomTSet program.
The functionality is activated by the switches below the LEDs.
Jumper Function
tp + tm
Internal 20mA interface is connected with
terminal 4 (+) and 5 (-).
Keep RTS and CTS open in this case !
CTS + RTS
Signals from interface module are connected
with terminals 4 and 5.
RS232: 4:=CTS, 5:=RTS
RS485: 4:=Y+, 5:=Z-
Keep tp and tm open in this case!
pc2 Must be open always, used for internal
processing.
eep
Closed: Allow programming; changing of
parameters by UniModSet program allowed.
Open: parameter memory (EEPROM) is write
protected.
par
Closed: internal programming by AT
commands: the internal CPU can optionally
send the AT commands to the MC55 module.
ab Reserved, do not use !
120R Termination for RS485: 120Ohm
Y + Z Internal RS485 interface is connected to RJ48
plug.
RI or DSR Connect either RI or DSR signal of internal
RS232 interface to RJ48 plug.
UE/DTR
Connect either RS232 DTR signal or control
input UE to RJ48 plug.
The UE input serves for sending a SMS or
triggering automatic baud rate adaption.
UE/DTR
UA/DCD
tp CTS tm RTS pc2 eep par ab 120R Y Z RI DSR
UA/DCD Connect either RS232 DCD signal or control
output UA to RJ48 plug.
Delivery condition (standard):
U E / D T R
tp CT S tm RT S p c 2 e e p p a r a b 1 2 0R Y Z RI DS R
U A /D C D

UniMod GSM-3+
Capter 8 Additional Functions 19
8.2 Signal Quality
When the modem operates in CSD mode the INF-LEDs show the current
field strength of the GSM signal. When the display is updated (every three
seconds) the first LED flickers shortly. The second and third LED display
the signal quality. Encoding see table below. (:LED on / ¤: LED off):
INF-LED Signal level Description
¤ ¤ -99dBm to -113dBm Bad signal quality, transmission may be
disturbed.
¤-83dBm to -97dBm Low signal quality;
¤-67dBm to -81dBm Medium signal quality;
 -51dBm to -65dBm Good signal quality;
¤ ¤
¤
¤ ¤
undefined No signal quality information available;
¤
¤
¤
undefined Modem logged in GPRS-Network: second and
third LED flash alternately. In GPRS mode field
strength can not be displayed.


During the connection and 60 seconds after it is the signaling
disabled!

UniMod GSM-3+
20 Chapter 8 Additional Functions
8.3 SMS
Optional it is possible to activate SMS. This function is monitoring of on/off
state changes of DTR input (terminal 8 and 9):
Standard RS232: Function DCD/DTR SMS: Function UA/UE
UE/DTR
U A/ DC D
DSR
UE/DTR
UA/DCD
DSR
Example: 20mA interface with two meters and SMS input (contact):
80 - 270 VAC
60 - 375 VDC
SMS
20mA
GSM 900 / 1800
(GPRS)
XXXXXXX XXXXXXX
1 876543
2
GSM
RJ48
8 9
UniMod GSM-3+
Interface: RS232
Baudrate: 9600 8n1
80VAC - 270VAC 50/60Hz, 60VDC - 375VDC
2007
The modem tries to send an SMS at every change of contact (open/close).
Maximum rate is one SMS per 10 seconds.


In some cases it is neccessary to enable the SMS functionality at the
network provider. In order to test a SIM card it proved useful to insert
it into a mobile phone and then try to send a SMS.