Application and functions
1.9 Configuration examples
CP 1243-8 IRC
28
Operating Instructions, 02/2018, C79000-G8976-C385-03
Telecontrol communication - redundant paths
In this example an S7-1200 with a CP 1243-8 is connected to the master station via
redundant paths:
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One path via a dedicated line
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One path via the Internet
Other network combinations are possible.
As the master station TIM, a TIM 4R-IE is used here that uses the following interfaces:
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One Ethernet interface for connecting to the master station PC
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One Ethernet interface for connection to the Internet (via a SCALANCE M812 router)
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One serial interface for connection to the dedicated line modem MD2
The CP is connected via both interfaces:
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One Ethernet interface for connection to the Internet (via a SCALANCE M812 router)
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Serial interface with TS modules RS-232 for connection to the dedicated line
Figure 1-4
Communication of an S7-1200 via redundant paths
