Satel GPRS-T4 User manual

GPRS/SMS Reporting Module
GPRS-T4
Program version 3.01 gprs-t4_en 10/13
SATEL sp. z o.o.
ul. Schuberta 79
80-172 Gdańsk
POLAND
tel. + 48 58 320 94 00
[email protected]
www.satel.eu

WARNINGS
The module should only be installed by qualified personnel.
Read carefully this manual before proceeding to installation.
Changes, modifications or repairs not authorized by the manufacturer shall void your rights
under the warranty.
Due to the specific character of data transmission using GPRS
technology and possible costs involved, it is advisable to install in
the module a SIM card with tariff plan providing for at least 10 MB
monthly data transfer.
SATEL's goal is to continually improve the quality of its products, which may result in
alterations of their technical specifications and firmware. Current information on the
introduced modifications is available on our website.
Please visit us at:
http://www.satel.eu
Hereby, SATEL sp. z o.o., declares that this module is in compliance with the essential
requirements and other relevant provisions of Directive 1999/5/EC.
The declaration of conformity may be consulted at www.satel.eu/ce
The following symbols may be used in this manual:
- note;
- caution.

SATEL GPRS-T4 1
The GPRS-T4 module is a device dedicated for use in intruder alarm systems for
the purpose of reporting and messaging via the GSM networks. The main task of the
module is monitoring the status of inputs. A change of the input status results in sending
event codes to the monitoring stations or notifying selected telephone numbers by means of
SMS message or CLIP service. This makes it possible to supervise operation of various
devices, including alarm control panels without telephone communicator. The module inputs
can be programmed as digital or analog ones. Owing to its analog inputs, the module can
execute functions which are used in automation systems.
Event codes are sent in the form of GPRS transmission or SMS messages. Using the GPRS
technology makes it possible to send the codes to the STAM-2 monitoring station or
SMET-256 converter. The codes in SMS format can be sent to any monitoring station
which supports the SMS reporting feature.
In order to execute some functions, the module makes use of the features offered by
the CLIP service, which enables identification of the calling party and presentation of its
telephone number. Thus it is possible to control the outputs, trigger and send test
transmissions, as well as report events without incurring any costs.
Fig. 1. Basic applications of the module.
1. Module features
8 inputs, programmable as:
– digital, NO type,
– digital, NC type,
– analog.
Additional input for testing AC voltage presence.
4 OC type outputs (programmed as NO or NC), controlled:
– locally – by means of inputs;
– remotely – by means of SMS messages or CLIP.

2 GPRS-T4 SATEL
Ability to control the outputs from 64 telephones using the CLIP service.
Monitoring the input status is effected by sending event codes to two monitoring stations
(using the TCP or UDP protocol) by means of:
– GPRS transmission;
– SMS messages.
Capability to automatically replace the GPRS transmission with SMS message, if there are
problems with GPRS transmission.
Encrypted transmission of events sent with the use of GPRS technology.
Notifying of a change in input status by means of:
– SMS message;
– CLIP service.
Periodical test transmissions for checking availability of the module:
– to selected telephone numbers (with the use of SMS message or CLIP service);
– to monitoring stations.
Capability of generating additional test transmissions:
– after identification of the calling party's telephone number (CLIP service);
– after receiving command from the GPRS-S
OFT program.
Option to check the status of available resources and account validity of the SIM card
installed in the module.
Indicator of GSM signal level received by industrial cellular telephone and an indicator of
troubles connected with logging into the GSM network.
Module configuration:
– locally – through the RS-232 (TTL) port;
– remotely – through the GSM network (GPRS technology);
– remotely – by means of SMS messages.
Capability of remotely updating the module firmware by means of GPRS.
Ability to automatically restart the module.
Power supply with 12 V DC (±15%).
2. Description of electronics board
Description of terminals:
+12V - power supply input (12 V DC ±15%).
COM - common ground.
Z1 ÷ Z8 -inputs. They can be programmed as digital (NC or NO type) or analog ones.
01 ÷ 04 - OC type outputs.
AC - terminal for testing AC voltage presence.

SATEL GPRS-T4 3
Fig. 2. View of module electronics board.
Explanations for Figure 2:
1 - SIM card socket. It is not recommended to insert the SIM card into its socket before
programming the card PIN code in the module (if the card requires entering the PIN
code). If the event codes are to be sent with the use of GPRS technology, the GPRS
service must be activated for the SIM card installed in the module.
2 - LEDs indicating the module status (see: Fig. 3).
– LED A is blinking when GPRS transmission is going on,
– LED B is blinking when SMS message is being sent or the module is calling (CLIP
test transmission),
– the other LEDs indicate the level of signal received by the GSM telephone (steady
light) and the troubles (blinking).
3 - RS-232 port (TTL standard).
4 - antenna socket.
5 - GSM industrial telephone.
Fig. 3. Examples of LED indicated statuses.
Explanations for Figure 3:
A(LED A is blinking, the other LEDs are lit up) – GPRS transmission is going on; signal level:
3.
B(LED B is blinking, the other LEDs are lit up) – SMS message is being sent or module is
calling (CLIP test transmission); signal level: 4.
C(LEDs are blinking) – logging into GSM network.

4 GPRS-T4 SATEL
D(LEDs are blinking) – logging into GSM network has failed; missing SIM card.
E(LEDs are blinking) – logging into GSM network has failed; missing PIN code.
F(LEDs are blinking) – logging into GSM network has failed; invalid PIN code.
G(LEDs are blinking) – logging into GSM network has failed; SIM card has been blocked
after three attempts to use an invalid PIN code (PUK code must be used to unblock the
SIM card).
3. Installation
Disconnect power before making any electrical connections.
It is not recommended to power up the device with disconnected antenna.
The GPRS-T4 module should be installed indoors, in spaces with normal air humidity. When
selecting the installation place, take into consideration that thick walls, metal partitions, etc.
will reduce the radio signal range. Installation in close vicinity of electrical systems is not
recommended, as it may adversely affect the device performance.
The module power supply source should provide sufficient output current and be equipped
with a battery.
The following installation procedure is recommended:
1. Connect the antenna to the socket on electronics board. Be careful not to damage
the socket.
2. Connect the devices whose operation is to be monitored by the module to the input
terminals, as required.
3. Connect the wire of transformer secondary winding, from which AC voltage is supplied,
to the module power supply unit to the AC terminal (see Fig. 4).
4. Connect the devices to be controlled by the module to the terminals of the outputs.
5. Connect the power leads to the +12V and COM terminals.
6. Connect the computer to the module RS-232 (TTL) port (see: section "Local programming
through RS-232 (TTL) port").
7. Turn on the module power supply.
8. Using the GPRS-S OFT program, define PIN code for the SIM card (if the card requires
entering the PIN code) to be installed in the module.
9. Turn off the module power supply.
10.Insert the SIM card into the socket (see: Fig. 5).
11.Turn on the module power supply. Logging the telephone into the GSM network may take
a few minutes.
If the SIM card PIN code is inconsistent with that defined in module settings, the
inconsistency will be indicated by the electronics board LEDs (see: Fig. 3Example F).
The second attempt of using the PIN code will be made after 30 seconds. After
the third attempt to use the invalid PIN code, the SIM card will be blocked. In order to
enter the PUK code and unblock the SIM card, remove it and insert into the mobile
phone.

SATEL GPRS-T4 5
Fig. 4. Example of connecting power supply and testing AC voltage presence in GPRS-T4
module. 1 – transformer. 2 – power supply unit. 3 – GPRS-T4 module.
Fig. 5. Installing the SIM card.

6 GPRS-T4 SATEL
Fig. 6. GPRS-T4 module in housing, secured with a plastic strap.
Before you begin using the module, remove the plastic strap protecting the device
during transport. Be careful when removing the strap, so as not to damage any
components on the electronics board.
4. Programming and configuring the module
For programming and configuring the module, the GPRS-S OFT program version 1.07.000 is
required. The program is delivered free of charge with the device. Communication between
the program and the module can be effected locally or remotely. The module with factory
default settings can only be programmed locally.
Provision is also made for programming some parameters of the module by means of SMS
messages.
4.1 Local programming through RS-232 (TTL) port
The serial COM port of the computer must be connected with the RS-232 (TTL) port on the
module electronics board. The cables for making this connection are available as a set
designated DB9FC/RJ-KPL. Indicate in the GPRS-S OFT program the computer COM port to
be used for communication with the module. To do so, click on the "Configuration" button
(see: Fig. 7and explanations for the figure) and, in the window that will open, select one of
the available computer COM ports. After activation of the selected COM port, the program
will establish communication with the module.

SATEL GPRS-T4 7
4.2 Remote programming using GPRS technology
During the remote programming of the module, all functions that require the use
of GSM telephone will be disabled.
Remote programming is possible when the "Remote programming" option is enabled in
the module and the following items have been programmed:
– PIN code (if the card requires entering the PIN code);
– Access Point Name (APN) for Internet GPRS connection;
– user name for Internet GPRS connection;
– password for Internet GPRS connection;
– DNS server IP address which is to be used by the module (the DNS server address
requires no programming, if the computer address is entered as IP address);
– initialization code for computer connection.
APN, user name, password and DNS server address can be obtained from the GSM
network operator.
The computer on which the GPRS-S OFT program will be running must have its IP address
visible in the Internet (so-called public IP address). Otherwise, the network server port must
be redirected to that computer, so as to make connection with the computer possible.
In order to establish communication between the module and the computer, do the following:
1. Start the GPRS-S OFT program.
2. Click on the "Configuration" button (see: Fig. 7and explanations for the figure) and, in
the window that will open, enter the number of TCP port selected for communication with
the module. The number will have to be included in the body of SMS message which will
be sent to the module GSM telephone number to initialize communication.
3. Click on the button (see Fig. 7). In the menu that will open, select "TCP/IP" to activate
the server.
4. Send SMS message to the module GSM telephone number. The SMS message should
have the following form: xxxx=aaaa:p= ("xxxx" is the module defined code to initialize
communication with GPRS-S OFT program – "Initiating SMS"; "aaaa" is the address of
the computer with which the module is to establish communication, shown numerically or
as a name; "p" stands for the number of network port through which communication with
the GPRS-S OFT program is to be effected). The module will connect to the computer
whose address was given in the SMS message.
4.3 Description of the program
4.3.1 Main menu
Explanations for Figure 7:
1 - Read from file – button enables loading configuration data from file.
2 - Write to file – button enables saving configuration data to file.
3 - Read – button enables reading data from the module.
4 - Write – button enables saving data to the module.
5 - Abort – button enables terminating the data reading/writing.
6 - Start test transmission – button starts sending the module test transmission (in case
of remote programming, the test transmission will only be sent after completion of the
communication with the module).

8 GPRS-T4 SATEL
Fig. 7. Main menu of GPRS-S OFT program.
7 - Configuration – button enables opening the "Connection" window. The window
enables configuration of parameters relating to the mode of communication between
program and module:
– select the computer COM port through which local programming is to be
effected;
– enter the number of TCP port to be used for remote programming of the module.
Values from 1 to 65535 can be entered.
8 - Connection – depending on the mode of communication with module, selected using
the button, click on the button to:
– enable/disable the computer COM port (local programming through RS-232 port);
– activate/deactivate the server (remote programming with the use of GPRS
technology and TCP/IP protocol) – a click on the button will simultaneously open
a window indicating the server status.
The button color indicates the current communication status:
– – green – computer COM port enabled / server active;
– – yellow – data transfer in progress;
– – gray – computer COM port disabled / server inactive.
9 - button for selecting the mode of communication with the module: local programming
through the RS-232 port or remote programming with the use of GPRS technology
and TCP/IP protocol.
10 - information on the mode of communicating with the module:
– COMn (n = COM port number) – communication through the RS-232 port;
– TCP/IP – communication with the use of GPRS technology.
11 - module name.
12 - version of module program (version number and build date).
13 - status bar showing the status of all inputs and outputs of the module. Individual colors
indicate the following states:
green – normal input status / output turned off,
blue – blocked input,
red – digital input violated / voltage has exceeded the value preset for threshold H
of analog input / output turned on,

SATEL GPRS-T4 9
orange – voltage has dropped below the value preset for threshold L of analog
input,
gray – input disabled.
14 - level of signal received by the GSM antenna and the name of service provider used by
the module. If the module telephone has failed to log into the GSM network, the
icon will be displayed here to indicate trouble.
15 - current level of module supply voltage.
4.3.2 “GSM telephone, Monitoring stations” tab
Fig. 8. "GSM telephone, Monitoring stations" tab.
Programming
GPRS-T4 identifier – a sequence of 1 to 8 alphanumeric characters to identify the module.
Communication between the program and the module is only possible when the identifier
entered in this field is consistent with that stored in the module. No identifier is
preprogrammed in the module with factory default settings. Communication with such
a module can be established without entering any identifier in the program, but as soon as
the connection is established, the program will automatically generate a random identifier.
It can be saved into the module or enter another one and save it.
Remote programming – enable this option if remote programming of the module with
the use of GPRS technology is to be available.
Initiating number only from list of telephone numbers for messaging – if this option is
enabled, the SMS message initiating the remote programming must be sent from

10 GPRS-T4 SATEL
a telephone whose number is stored in the module memory in the list of telephone
numbers for messaging.
Initiating SMS – a code which must be included in the SMS message sent to the module
GSM telephone number, so that the module can make an attempt to connect to
the computer whose IP address and communication port are indicated in the SMS
message.
GSM telephone
PIN – SIM card PIN code (if the card requires entering the PIN code).
Entering invalid PIN code may result in blocking the SIM card.
SMS center number – telephone number of the Short Message Service Center, which
delivers SMS messages. If the number has been written by the operator to the memory of
SIM card installed in the device, it need not be entered. In such a situation, the module will
download it automatically. Otherwise, it is necessary to enter the number, if the module is
to send SMS messages. It should be remembered that the number written into the module
must be suitable for the network in which the SIM card is registered.
GPRS APN – Access Point Name for Internet GPRS connection.
User – user name for Internet GPRS connection.
Password – password for Internet GPRS connection.
APN, user name and password must be defined, if GPRS data transmission (event
codes, programming) is to be available.
DNS server – DNS server IP address which is to be used by the module. The DNS server
address is necessary when GPRS technology is used for sending data, if the address of
the device to which the module is to connect (monitoring station, computer with
GPRS-S OFT program) has been entered as a name. If all addresses are given in the IP
address form (4 decimal numbers separated by dots), programming the DNS server
address is not required.
Other
USSD codes forwarding message – content of the control command that must precede the
USSD code in SMS message being sent to the module. The USSD codes make it possible
e.g. to check the account status of SIM card installed in the module. The form of SMS
message must be: xxxx=yyyy=, where "xxxx" is the control command, and "yyyy" – the
USSD code served by the operator of GSM network in which the telephone is used
(it depends on the SIM card installed in the module). Having received such an SMS
message, the module will execute the USSD code contained therein. The answer received
from the operator is sent in the form of SMS message to the telephone number from which
the control command was sent.
Using the advanced functions available due to the USSD service (when menu is
presented in reply to the code entered) is not recommended.
Autorestart every – if the restart of module settings is to be periodically repeated, you must
define every how many hours it is to happen. The first restart of module settings will occur
after the programmed time has elapsed since the settings were written to the module. If 0
is entered, the function will be disabled.
Limit number of notifications to – this field allows you to specify the maximum number of
transmissions (GPRS, SMS messages, CLIP service) sent by the module during 24 hours.
The test transmissions and SMS messages with information on module status are not
included in the number of transmissions and are not limited. Values from 0 to 255 can be
entered. Entering 0 means no transmission limit (default: 0).

SATEL GPRS-T4 11
Monitoring station 1 / Monitoring station 2
Using GPRS technology, event codes can be sent to the STAM-2 monitoring station or
to the SMET-256 converter.
Communication with the subscriber sending event codes with the use of GPRS
technology should be tested by the monitoring station as rarely as possible (if a value
lower than 1 minute is entered in the "Test period" field of the monitoring station, the
time will be rounded up by the module to 1 minute). It is recommended that the
maximum value be set, i.e. 255 seconds.
Disabled – if this option is selected, event codes will not be sent to the monitoring station.
SMS – if this option is selected, event codes will be sent to the monitoring station in the form
of SMS messages.
GPRS – if this option is selected, event codes will be sent to the monitoring station with
the use of GPRS technology.
GPRS, SMS if GPRS failure – if this option is selected, event codes will be sent to
the monitoring station with the use of GPRS technology, but after a specified number of
failed attempts to send events (lack of receipt acknowledgement from the monitoring
station), the event code will be sent in the form of SMS message.
Tel. number (SMS) – GSM telephone number used by the monitoring station for receiving
SMS messages. Must be preceded by the country code.
Address (GPRS) – address of the monitoring station. It can be entered in the IP address
form (4 decimal numbers separated by dots) or as a name.
Port – number of TCP port through which communication with the monitoring station will be
effected. The port number must be the same as that programmed in the monitoring
station.
Station key – enter in this field a string of 1 to 12 alphanumeric characters (digits, letters and
special characters) which define the key for coding the data to be sent to the monitoring
station. It must be consistent with that defined in the monitoring station for
managing subscribers in the simple mode.
GPRS key – a string of 1 do 5 alphanumeric characters identifying the module. It must be
consistent with that defined in the monitoring station ("ETHM/GPRS key").
GPRS attempts number – the number of failed attempts to send the event code to the
monitoring station using the GPRS technology, after which the module will made an
attempt to send the event code in the form of SMS message. The field is available if the
"GPRS, SMS if GPRS failure" field is selected. You can enter values from 1 to 16 (default:
1).
Advanced encryption – enabling this option will increase the security level of data
transmitted to the monitoring station. This option requires a SMET-256 converter with
firmware version 1.06 or higher, or STAM-1 PE and STAM-1 RE cards, version 3.03 or
higher.
Object identifier – enter in this field 4 characters (digits or letters from A to F) which will
serve as an identifier during the test transmissions sent by the module. Do not enter value
0000 (the module will not be sending test transmissions to the monitoring station). Using
digit 0 in the identifier is not recommended.
GPRS reporting
TCP / IP – if this field is selected, the module will send event codes to the monitoring station
using the TCP protocol.
UDP – if this field is selected, the event codes will be sent to the monitoring station by the
module using the UDP protocol.

12 GPRS-T4 SATEL
SMS format
The format of SMS messages for SMS reporting must be defined according to the monitoring
station requirements. The default SMS messages format programmed in the module
corresponds to the factory default settings of the STAM-2 monitoring station (program
version1.2.0 or later). If events are to be sent in the form of two characters, enter the
partition symbol only.
Telephone numbers for messaging and test transmissions
Telephone number – you can program 4 telephone numbers, to which the module can send
SMS messages and test transmissions, and which can also be used to control the output
with the CLIP. The telephone number must be preceded by the country dialing code.
SMS retr. – select this field (which is selected when the "x" symbol is shown in it), if the SMS
messages received by the module and sent from the phone numbers which are not on the
list (e.g. information received from the operator of the GSM network in which the module is
used) are to be forwarded to the given phone number.
CLIP-OUT1 ÷ OUT4 – you can define in this field if and how the output can be controlled
from the selected telephone number (T1 – T4), using the CLIP. You can choose from the
following options:
0: NO – CLIP does not control the output,
1: ON – CLIP will activate the output,
2: OFF – CLIP will deactivate the output,
3: ON for a time – CLIP will activate the output for a period of time (the cut-off time is
defined in the "Test transmission, Control" tab).
4.3.3 “Test transmission, Control” tab
Test transmission
The module test transmissions may be sent periodically at defined time intervals, and also
can be generated after identification of the telephone number of the calling party (CLIP
service) or after receiving a command from the GPRS-S OFT program. The test transmission
can have a form of SMS message sent to the selected telephone numbers, can be realized
with the use of CLIP service to the selected telephone numbers or can be sent in the form of
event code to the monitoring station.
Test transmission every – if the module test transmission is to be of periodical nature, you
have to program every how many days, hours and minutes it should be sent. The first test
transmission will be sent after the preset time since saving the settings in the module has
elapsed.
If an extra test transmission (using the CLIP service or the GPRS-S OFT program
command) is generated, the time before sending the periodical test transmission will
be counted from the beginning.
SMS test transmission – enter in this field the SMS message body which will be sent as the
module test transmission to the selected telephone numbers.
If you have defined the time period after which the test transmission is to be sent, and
the "SMS test transmission" field remains blank, SMS messages containing
information on the module status will be sent – as test transmissions – to the selected
telephone numbers (see: "Send SMS with module status to CLIP" option).
Send test as event to monitoring stations – if this option is enabled, the module test
transmission can be sent to the monitoring stations. The method of sending the event code
(SMS, GPRS) depends on the rules defined for each monitoring station in the "GSM
telephone, Monitoring stations" tab. It is necessary to define the event code to be sent.

SATEL GPRS-T4 13
Fig. 9. "Test transmission, Control" tab.
Event codes for module test transmission
The table makes it possible to define the Contact ID codes which will be sent to the
monitoring stations for the module test transmission.
Format – the field displays information that the code is sent in the Contact ID format.
CODE – program 3 digits of the event code in this field. You can also make use of
the code editor. To open the code editor window, click on the button, available in the
"EVENT" field.
R– select this field, if the event code is to denote new restore/arming (click on the field
twice to select/deselect it).
Part. – enter in this field the partition number which will be included in the event message
sent to the monitoring station.
Zone n. – enter in this field the zone number which will be included in the event message
sent to the monitoring station.
EVENT – the field displays description of the event whose code is entered in the "CODE"
field. The button, which opens the editor of Contact ID codes, is also available in the
"EVENT" field.
The test transmission will be sent as an event, if the following parameters and options
are programmed for the monitoring station:
GPRS reporting (see section "Starting GPRS reporting") or SMS reporting (see
section "Starting SMS reporting") is activated,

14 GPRS-T4 SATEL
object identifier different from "0000" is programmed,
reporting format is programmed,
event code different from "000" is programmed.
Test transmissions to be sent to telephone numbers
The table allows you to define the form in which the test transmissions will be sent to the
telephone numbers programmed in the "GSM telephone, Monitoring stations" tab. Click
twice on the chosen field to select/deselect it (the field is selected if the "x" symbol is
displayed in it).
SMS – select this field, if the module test transmission is to be sent to the selected
telephone number in the form of SMS message.
CLIP – select this field, if the module test transmission for the selected telephone number
is to be realized with the use of CLIP service (the module will dial the programmed
number and then will be trying for 30 seconds to get through – the module telephone
number will be displayed in the telephone).
Do not answer any call from the module, if the CLIP test transmission is to be
effected without incurring any costs.
CLIP settings
The table makes it possible to determine in detail how the CLIP test transmissions are to be
sent to the four telephone numbers programmed in the "GSM telephone, Monitoring stations"
tab. Click twice on the chosen field to select/deselect it (the field is selected, if "x" symbol is
displayed in it).
Acknowledgement – select this field if the module is to wait for the acknowledgement of
receipt of test transmission using the CLIP service. In order to acknowledge receiving
the CLIP test transmission, reject the call coming from the module.
Retries number – if the "Acknowledgement" field is selected, the test transmission with
the use of CLIP service can be conducted a specified number of times. Values from 1 to
15 can be programmed. Acknowledgement of the CLIP test transmission receipt will make
the module stop repeating such a transmission (e.g. if the test transmission is programmed
to be repeated 5 times, but it is already received at the first attempt, the module will not
send the other 4 transmissions).
-> SMS – if the "Acknowledgement" field is selected and receiving the CLIP test transmission
is not acknowledged, the module may send a "CLIP failed" SMS message to the selected
telephone number.
CLIP
CLIP starts test transmission – if this option is enabled, it is possible to send a test
transmission with the use of CLIP service. Call the module telephone number and after
hearing the dialing tone, hang up – the module will identify the telephone number of the
calling party and send a test transmission according to the preprogrammed settings.
Send SMS with module status to CLIP – if this option is enabled, it is possible to obtain
information about the module status with the use of CLIP service. Call the module
telephone number and after hearing the dialing tone, hang up – the module will identify
the telephone number of the calling party and send to that number an SMS message
containing the following information:
– module name;
– version of module software (version number and date of build);
– S0 ÷ S4 – current level of signal received by the antenna;
– P – current supply voltage value.

SATEL GPRS-T4 15
– Z1 ÷ Z8 – information on the status of Z1 ÷ Z8 inputs:
i – digital / analog input normal status,
I – digital input violated,
L – voltage at analog input has dropped below threshold L; information on input
voltage value,
H – voltage at analog input has exceeded threshold H; information on input voltage
value,
b – digital / analog input blocked.
– AC – information on AC input status:
i – AC voltage presence,
I – AC voltage loss.
– OUT1 ÷ OUT4 – information on status of the OUT1 ÷ OUT4 outputs:
o – output inactive,
O – output active.
– EVb – the maximum number of transmissions has been reached (see the "Limit number
of notifications to" parameter in the "GSM telephone, Monitoring stations" tab).
Reaction to CLIP only when number is on list of telephones for messaging – if this
option is enabled, the module will only send test transmission or SMS message with
status information when the telephone number, identified owing to the CLIP service, is one
of the numbers programmed in the "GSM telephone, Monitoring stations" tab on
the "Telephone numbers for messaging and test transmissions" list.
If the "Reaction to CLIP only when number is on list of telephones for messaging"
option is not enabled, the test transmissions and SMS messages with information on
device status:
for the numbers in the list, they will be sent by the module immediately,
for the numbers not in the list, they can be sent by the module every 10 minutes at
the most.
Control
SMS messages can be used to control the module inputs and outputs. The SMS message
sent to the module may contain only one control command. The control command may
contain up to 24 characters. The control commands relating to inputs can be defined in the
"Inputs" tab.
Control
SMS control only from list of telephone numbers for messaging – if this option is
enabled, the functions of enabling, disabling or time-enabling the outputs, as well as
blocking/unblocking the inputs will only take effect after the SMS message is sent from
a telephone number which is programmed in the "GSM telephone, Monitoring stations"
tab in the "Telephone numbers for messaging and test transmissions".
Confirm controlling with status SMS – if this option is enabled, starting the functions of
turning on, turning off or turning on for a period the outputs, as well as
blocking/unblocking the inputs will result in sending by the module of an SMS message
containing information on the module status to the telephone number from which
the control message was sent (see: "Send SMS with module status to CLIP" option).
Output OUT1 ÷ OUT4
Turn on – enter in this field the SMS message content that will be sent to the module
telephone number in order to activate the output.

16 GPRS-T4 SATEL
Turn off – enter in this field the SMS message content that will be sent to the module
telephone number in order to deactivate the output.
Turn on for period – enter in this field the SMS message content that will be sent to
the module telephone number in order to activate the output for a defined period of time.
Output cut-off time – if the output is to be activated for a period of time, the time must be
defined. After the time runs out, the output will be deactivated. You can program times
up to 18 hours 12 minutes and 14 seconds. If the output cut-off time is not programmed,
activating the output for a period of time will be impossible.
NC – if the option is enabled, the output will operate as the NC (normally closed) output.
When the option is disabled, the output will operate as the NO (normally open) output.
Trouble status – if this option is enabled, the OUT4 output indicates a problem with
logging into the GSM network. It will activate about 2 minutes after the problem has
occurred. In its active state, it will be shorted to the common ground. It will remain
shorted to the ground until logging into the GSM network. The problem with logging into
the GSM network can be caused by:
– missing SIM card,
– entering a wrong PIN code,
– missing or damaged antenna,
– unavailable GSM network (out of range),
– telephone damage.
Additional information about the trouble is provided by the LEDs on the electronics
board (see Fig. 3).
4.3.4 “Inputs” tab
Inputs
The table enables programming the working parameters of Z1 ÷ Z8 inputs and AC input.
For the AC input, it is only possible to program the "Sensitivity" parameter (values up
to 99 minutes and 59 seconds can be entered) and define whether and how it is to
control the output.
Type – the input can be programmed as:
– digital, NC type – enter digit 1,
– digital, NO type – enter digit 2,
– analog – enter digit 3,
– disabled – enter digit 0.
Sensitivity – time during which:
– the NC type digital input must be disconnected from the ground so that the module can
register the input violation,
– the NO type digital input must be shorted to ground so that the module can register
the input violation,
– voltage on the analog input must drop below threshold L (minus tolerance) or rise above
threshold H (plus tolerance) so that the module can register exceeding the preset value
(see Fig. 11).
Values from the 0 to 5100 ms range can be programmed (every 20 ms).
Restore – time during which:
– the NC type digital input must be again shorted to ground so that the module can
register input restore,

SATEL GPRS-T4 17
– the NO type digital input must be again disconnected from the ground so that
the module can register input restore,
– voltage on the analog input must rise above threshold L (plus tolerance) or drop below
threshold H (minus tolerance) so that the module can register input restore.
The defined time makes it possible to reduce the number of sent transmissions. Values
from the 0 to 255 seconds range can be programmed.
Fig. 10. "Inputs" tab.
Blocking – select this field if the input is to serve as a blocking input, i.e. its violation will
result in blocking other inputs of the module. Only one module input can perform
the function of blocking input.
Blocked – select this field if the input is to be blocked after violation of the blocking input or
sending the SMS message, the content of which can be defined in the tab "Test
transmission, Control".
L threshold – the lower voltage threshold for analog input. If the voltage drops below
the defined value (minus tolerance), the module will register input violation. Entering value
0 means that the voltage threshold is not controlled.
H threshold – the upper voltage threshold for analog input. If the voltage rises above
the defined value (plus tolerance), the module will register input violation. Entering value 0
means that the voltage threshold is not controlled. The maximum value that can be
programmed is 16.56 V.
Tolerance – the voltage value to be subtracted from the defined value at threshold L when
the voltage drops below threshold L or added to the defined value at threshold H when
the voltage rises above threshold H so that the module can register exceeding
the programmed value / the voltage value to be added to the defined value at threshold L
when the voltage rises above threshold L or subtracted from the defined value at threshold
H when the voltage drops below threshold H so that the module can register input
restoration to normal state. The field is available to analog inputs.
The value obtained after summing up the upper voltage threshold (H) and the
tolerance must not exceed the maximum permissible voltage.
Output OUT1 ÷ OUT4 – the field defines whether the input is to control the output. The
following options are available:
– blank field – input status does not control the output,
– ON – violation of the input or exceeding the voltage value at threshold L or H, as
defined for the input, will activate the output,

18 GPRS-T4 SATEL
– ON for a time – violation of the input or exceeding the voltage value at threshold L or H,
as defined for the input, will activate the output for a period of time,
– OFF – violation of the input or exceeding the voltage value at threshold L or H will
deactivate the output.
Fig. 11. Operation manner of analog input. 0 – no violation. 1 – violation. L-T – voltage level L
minus tolerance. L – lower voltage level. L+T – voltage level L plus tolerance. H-T – voltage
level H minus tolerance. H – upper voltage level. H+T – voltage level H plus tolerance.
Input bypass
Block – enter in this field the SMS message content that will be sent to the module
telephone number in order to block the input(s) indicated as blocked in the "Inputs"
table, “Inputs” tab.
Unblock – enter in this field the SMS message content that will be sent to the module
telephone number in order to unblock the input(s) indicated as blocked in the "Inputs"
table, "Inputs" tab.
The body of SMS messages for starting the functions of block/unblock the inputs,
may contain up to 24 characters.
4.3.5 “CLIP / SMS messaging” tab
Notification can be effected by means of SMS messages or by using the CLIP service (the
module does not inform about input restore / end of trouble using the CLIP).
CLIP T1 – T4 – select the fields of telephones (see: numbers in the list "Telephone numbers
for messaging and test transmissions", programmed in the "GSM telephone, Monitoring
stations" tab), which will be informed about a change of input status by using the CLIP
service.
SMS T1 – T4 – select the fields of telephones (see: numbers in the list "Telephone numbers
for messaging and test transmissions", preprogrammed in the "GSM telephone, Monitoring
stations" tab), to which an SMS message is to be sent to notify about a change of input
status.
Violation/pass – content of the SMS message that will be sent on the input violation /
exceeding the preprogrammed input voltage value (rise above the defined value at
threshold H or drop below the defined value at threshold L). The message may consist of
up to 24 characters. It may not contain any diacritical characters. If the field is left blank,
the message will not be sent.