Communication
S7-1200 Programmable controller
800 System Manual, V4.2, 09/2016, A5E02486680-AK
PROFIBUS is used for exchanging data through the user program with other
communications partners through the PROFIBUS network:
● With CM 1242-5, the CPU operates as a PROFIBUS DP slave.
● With CM 1243-5, the CPU operates as a PROFIBUS DP master class1.
● PROFIBUS DP Slaves, PROFIBUS DP Masters, and AS-i (the 3 left-side communication
modules) and PROFINET are separate communications networks that do not limit each
other.
The S7-1200 CM 1243-2 AS-i Master allows the attachment of an AS-i network to an S7-
1200 CPU.
CPU-to-CPU S7 communication
You can create a communication connection to a partner station and use the GET and PUT
instructions to communicate with S7 CPUs.
TeleService communication
In TeleService via GPRS, an engineering station on which STEP 7 is installed communicates
via the GSM network and the Internet with a SIMATIC S7-1200 station with a CP 1242-7.
The connection runs via a telecontrol server that serves as an intermediary and is connected
to the Internet.
The S7-1200 SM 1278 4xIO-Link Master enables IO-Link devices to connect to an S7-1200
CPU.
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