Siemens S7-1200 System Manual page 766

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Communication processor and Modbus TCP

12.6 Telecontrol and TeleService with the CP 1242-7

Requirements

The equipment used in the stations or the control center depends on the particular

application.

● For communication with or via a central control room, the control center requires a PC

with Internet access.

● Apart from the station equipment, a remote S7-1200 station with a CP 1242-7 must meet

the following requirements to be able to communicate via the GSM network:

– A contract with a suitable GSM network provider

– The SIM card belonging to the contract

– Local availability of a GSM network in the range of the station

If GPRS is used, the contract must allow the use of the GPRS service.

If there is to be direct communication between stations only via the GSM network, the

GSM network provider must assign a fixed IP address to the CPs. In this case,

communication between stations is not via the control center.

The SIM card is inserted in the CP 1242-7.

S7-1200 Programmable controller

System Manual, 03/2014, A5E02486680-AG