Application and functions
1.3 Communications services
CP 1243-8 IRC
16 Operating Instructions, 02/2018, C79000-G8976-C385-03
The CP is a communications processor of the SIMATIC S7-1200 for system connection to
control centers using the IEC 60870-5 protocol for telecontrol applications.
An S7-1200 with a CP functions as a substation (slave).
Communication via SINEMA Remote Connect
Supported as of firmware version V3.1. See section Connection to SINEMA RC (Page 17).
Networks and network nodes
Network types
The CP makes telecontrol communication possible via the following network types:
● Industrial Ethernet
● Dedicated line / wireless network
● Analog dial-up network, ISDN network
● Mobile wireless networks
– GSM/GPRS (2G)
With 2.5G router SCALANCE M874-2
– UMTS (3G)
With 3G router SCALANCE M874-3
– LTE
With router SCALANCE M876-4
● IP-based wireless networks
For information on connecting the CP to various network types, refer to the section
Overview: Connection to LAN / WAN (Page 59).
The CP with the firmware version described here (see Preface) and configured in STEP 7
V14.0 SP1 supports the following network node types:
● Station
● Node station
Depending on the transmission protocol being used, one of the following transmission
modes can be configured in STEP 7 V5:
● GPRS station
● MSC station
● Neutral
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