Parameter assignment/addressing
3.4 Specifying the router for a PROFINET IO device
PROFINET with STEP 7 V15
66 Function Manual, 12/2017, A5E03444486-AH
Configuration example: Configuring a router for an IO device
The following example shows a configuration in which you configure a router at the IO device
so that the IO device reaches IP addresses in the higher-level network.
Figure 3-11 Configuration example: Configuring a router for an IO device
You have a CPU 1516-3PN/DP. The two PROFINET interfaces X1 and X2 of the CPU work
in the "IO controller" operating mode. The PROFINET interface X1 is connected with the
subnet "Production line 1". PROFINET interface X2 is connected with the subnet "Production
line 2". The two subnets "Production line 1" and "Production line 2" are each connected via a
router with the higher-level network "Superior line".
For PROFINET X1, you configure the router "Router 1" with the IP address 192.168.1.100.
The IO device (ET 200SP) in the "Production line 1" subnet adopts the router from the
IO controller.
You cannot configure a router for the PROFINET interface X2 because you have already
configured a router for the PROFINET interface X1 of the CPU.
No router is transferred by the PROFINET interface X2 to the IO device in the subnet
"Production line 2".
In order for the IO device in the subnet "Production line 2" to reach nodes in the higher-level
"Superior line", configure the router "Router 2" with the IP address 192.168.2.100 for the IO
device.
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