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JZ20 modbus over telit GPRS


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Have you prepared the modem as a PLC-side modem?  You can configure the modem using our "Modem Services" found under the "Connection" tab in U90.  I know we definitely support the Telit EZ-10 Modem.  I don't believe we support this modem, though.


If you have the modem prepared already, please ensure SB72 is on.  This will initialize the modem.  To ensure the PLC is definitely initialized, monitor SB73 for success.


For a full list of system operands related to the modem statuses, please visit our help files (Communications> Modems> Modem Communications- System Bits and Integers).  here you can also find our files on Modem Troubleshooting.


Please let us know if this helps.

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