GUys i need to communicate a plc with a modem. the tasks are as below.
1. plc controls and automates a filer plant.
2. communicate with the modem.
3. the modem logs data to a central server and at the rtu itself.
4. the modem sends alarms also.
If your PLC supports a RS232, then you can control the GSM modem listed here.
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The mentioned terminals supports the bearers:
- SMS, voice, fax, data by CSD (circuit switched data)
You also can use IP based services like TCP/IP and UDP/IP by At commands because the IP protocol stack is already in the terminal included.
Last but not least the terminal supports an email client and HTTP request to server.
Technical documentation:
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(Please download the docs. for GM862-PYT)
Test software ware RS term:
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User forum with thousands of members: https://www.roundsolutions.com/forum
Regards
Meff www.gsm-modem.de