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2/6/2012 4:14 PM | |
Joined: 9/29/2005 Last visit: 4/26/2022 Posts: 313 Rating: (24)
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hi!
35iT or 55iT? the communication via GSM can be a dialup-connection (CSD data service required) or a SMS "connection". Via SMS see this application: http://support.automation.siemens.com/WW/view/de/21063345 Via csd connection: not available in US (and some more countries?) and already in a few countries (germany e.g.) switched to semi-IP-transmission --> honestly i won´t rely on this technique if it is not absolutely necessary... OK if you want to use it anyway you have to go into detail of s7-200 using freeport-communication (ascii) to set up phone-call and then switch to ppi to use netw-/netr to send/receive process data. via GPRS see this application: http://support.automation.siemens.com/WW/view/en/22537809(only with Modem MD720-3) If you want to communicate tcp/ip based with 55iT you have to build your own program. Please tell us if you want to go into detail there. i am not an expert doing this :-) regards |
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