Advertisement
6. Module Operation After Switching On the Supply Voltage
After inserting the SIM card into the module and switching on the power, the module logs into
the GSM network. It then reads the authorized users from the SIM card and stores them in the
internal memory of the module. This process can take up to 1 minute, after which the module is
ready for operation. The data stored in the module memory is retained even after the supply
voltage is switched off. Within about one minute after logging into the GSM network, the
module will ring the authorized users. If the utility program is used to enter the phone
numbers, the numbers should not be stored on the SIM card at the same time, otherwise
changes made using the utility program in the first ten positions will be overwritten by
the phone numbers from the SIM card when the module is switched on!
6.1. Indicating the Status
To indicate the GSM module status, the yellow LED on the top of the GSM module is used.
When the supply voltage is connected and the module is initialized, the LED glows slightly and
at the same time flashes to indicate the status of the module. While the module is searching for
and logging into the GSM network, the LED flashes at 1-second interval; after logging in, the
interval is extended to 3 seconds and the module is ready for use.
7. Control of the Connected Device
You can use the G2S-T module to control almost any device. Typically, it is a gate, overhead
doors or barrier gate. It can be another appliance if the permissible load of the output relay
contacts is not exceeded. The allowed voltage between the contacts is 240V; the contact current
must not exceed 2A. The connected device is controlled by ringing the module from the
authorized phone number. This method (drop-call) is free of charge and by default, the output
relay closes for 1 second each time when the module has detected the incoming call. Other
options for setting the output relay and how to control it are described in Chapter 5.5.
8. Temperature Monitoring Mode
In the temperature monitoring mode, the module can monitor two temperatures measured by
the resistance thermometers connected to its inputs IN1 and IN2. For proper operation of the
module, it is necessary to set it first using the USBCommunicator utility. To set the temperature
monitoring mode, check the T1 and T2 checkboxes in the temperature alarm section of the
program window according to the number of monitored temperatures. It is also necessary to set
the temperature limits and conditions for triggering the alarm. If the > (<) option is selected, the
alarm is activated when the monitored temperature rises (drops) above (below) the set limit and
the module notifies the selected number of users by SMS or repeated ringing for the duration of
the temperature alarm. The notification interval and duration must be set using the utility
program. If the ↑ (↓) option is selected, the alarm is activated once the monitored temperature
exceeds (falls below) the set limit and the module notifies the selected number of users by the
SMS or one-time ringing. If the temperature alarm is activated and triggered, the module goes
sequentially through the phone numbers stored in the memory and rings or sends an SMS to
the selected number of authorized users by their order in the list. Both monitored temperatures
and their set limits are transferred in the alarm SMS.
- 7 -
Advertisement
