Routing - Siemens SIMATIC ET 200S Manual

Functions of the IM 151-7 CPU
8.9

Routing

Access from a PD/PC to stations in another subnetwork
As of STEP 7 V5.2 + Service Pack 1, you can reach S7 stations across
subnetwork boundaries with the PD/PC when using IM 151-7 CPU and the DP
master module, for example to load user programs or a hardware configuration or
to perform testing and diagnosis functions.
The routing function lets you connect a PD anywhere in the network and
establish a connection to any station that can be reached via the gateways.
The IM 151-7 CPU makes available 4 connections for routing PD functions. These
connections are additional to the S7 connections.
Note
If you use the your IM 151-7 CPU as an I slave, the routing function can only be
used when the DP interface is active.
Activate the Commissioning/Test Mode checkbox in the DP interface properties in
STEP 7.
Detailed information can be found in the Programming with STEP 7 manual or
directly in the STEP 7 Online Help.
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ET 200S IM 151-7 CPU Interface Module
A5E00058783-04