GRM-10 DEVICE REPLY TO STATUS COMMAND
CONTROL OF EXTA FREE SYSEM RECEIVERS
A full GRM-10 device reply to STATUS command:
RELAY1
<ON/OFF - current OUT1 output status>
TIME
<Time left to measure for OUT1 output>
RELAY2
<ON/OFF - current OUT2 output status>
TIME
<Time left to measure for OUT2 output>
IN1
<LO/HI - current IN1 input status>
IN2
<LO/HI - current IN2 input status>
Example:
RELAY1 ON TIME 30 RELAY2 OFF TIME 100 IN1 LO IN2 HI
If times for OUT1/OUT2 outputs are currently not measured, the reply to the STATUS command is:
RELAY1
<ON/OFF - current OUT1 status>
RELAY2
<ON/OFF - current OUT2 status>
IN1
<LO/HI - current IN1 status>
IN2
<LO/HI - current IN2 status>
or
RELAY1
<ON/OFF - current OUT1 status>
TIME
<0> RELAY2 <ON/OFF - current OUT2 status> TIME <0>
IN1
<LO/HI - current IN1 status>
IN2
<LO/HI - current IN2 status>
Example:
RELAY 1 ON RELAY 2 OFF IN1LO IN2HI
RELAY 1 ON TIME 0 RELAY 2 OFF TIME 0 IN1LO IN2HI
The GRM-10 device, by receiving certain commands (text messages), can control the wireless EXTA FREE system receivers. It is neces-
sary to connect the GRM-10 device with RXM-01 translator using the RS-485 interface. The GRM-10 device has such a default setting
that allows for a direct cooperation with RXM-01. If the transmission parameters change is necessary (standard, transmission rate, parity)
between GRM-10 and RXM-01 use the
MODBUSCONFIG
command.
CAUTION: The transmission line between the GRM-10 device and the RXM-
01 device is a two-wire shielded twisted-pair cable (it is recommended to earth
in a single point the shield line). The resistors (terminators) of 120 Ohm should
be placed at the beginning and at the end of the line.
he following points should also be carried out:
1. Connect the RXM-01 device to a PC. An appropriate “adapter” RS232 -
RS485 or USB - 485 (depending on the computers’ output) should be used.
2. Using the PC application that is dedicated to configure the GRM-10 device,
particular control commands and responding number of push-buttons shall
be defined in the EXTA fREE section. For each command, specify The RXM-
01 address for the MODBUS bus should be defined. The default address is
0x01. The address is important for a larger number of RXM-01 operating
independently on a single object.
3. Following the description of the PC, add (programme) particular push-but-
tons sent by the RXM-01 device to appropriate EXTA FREE system receiv-
ers.
4. After programming the receivers, use the PC application to check their ap-
propriateness.
5. Adjust the GRM-10 device into a normal operation mode and check the
operation by sending defined control commands to the GRM-10 device (the
proper communication between RXM-01 and GRM-10 after sending a con-
trol command is indicated by the LED diode RS485, it switches on).
If in the EXTA FREE control command several push-buttons are defined, the codes are sent to RXM-01 device with a defined address in
a sequence one after another and with an interval of 1 sec.
Example:
EF K1 K2 K3 SALON OFF
REMARKS
● Due to the queuing (prioritisation) of text messages in the GSM network, some delays related to sending the control command
and its realisation are possible (for example the adjustment of the GRM-10 outputs or EXTA FREE receivers). The delays can
be from several to tens o seconds.
● Due to the representation of the text message content, the configuration and control of the GRM-10 device is not possible by
means of ”SMS gateways” that are provided by the GSM operators.
● In case of operators using other resources of the GSM network, it is not possible to choose the operator manually. The logging
procedure is automatical - the operator with the strongest signal is chosen. Successful login of the GRM-10 device to the GSM
network is indicated by a flashing LED GSM STATUS diode with a frequency of 1/s. Make sure that the device is mounted in
areas with the GSM network reception. Operation on the reception border can have a negative influence on a proper operation
of the GRM-10 device and other devices in cooperation.
● It is important to switch off the PIN code or adjust the code to 1111 before installing the SIM card in the GRM-10 device.
● It is recommended to switch of the VOICEMAIL service on the card installed in the GRM-10 DEVICE.
The receiver added to K1
is activated
1sec.
1sec.
1sec.
The receiver added to K2
is activated
The receiver added to K3
is activated
Sending
the K1 code
Sending
the K2 code
Sending
the K3 code