Configuring Hardware and Communication Connections STEP 7.pdf

Requirements
Configuring Connections
Both of the subnets must be interconnected across a router, for example IE/PB
Link. Routing functions can also be performed by an S7 station or a SIMATIC PC
station that is interconnected to both subnets via CPs or CPU.
The end point in the SIMATIC PC/HMI station (currently only an OPC server) must
support routed subnets.
The connection partner must be located in the same project.
What to do if only one-way S7 connections can be configured
The S7 station can only be operated as communication server for configured oneway
S7 connections on interconnected subnets.
In this case, use NetPro to configure a one-way S7 connection for a SIMATIC PC
station/HMI station at the other subnet. This enables you to access data of the S7
station in the user program of the SIMATIC PC station, via the functions PUT (write
access) and GET (read access).
Configuring Hardware and Communication Connections with STEP 7
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