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Siemens MC35i GSM Modem

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I am trying to configure a Siemens MC35i GSM Modem plugged into an SLC500 PLC for remote programming. I cannot get it to answer. I have set modem handshaking on in the SLC, and set "AT S0=2" to enable auto answering in the modem. It still doesn't answer. Can anybody please help?
Thanks, Tom.
Aug 5 '08 #1
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