Instructions:
In this example, a CP1613 is used for the S7 communication via the SIMATIC NET OPC server to an S7-400H system on the Ethernet.
The requirement for the procedure described is an existing configuration of the S7400-H system with network connection.

Warning:
Fault-tolerant S7 connections are available exclusively in CP1613 (6GK1161-3AA00), CP1613 A2 (6GK1161-3AA01) and CP1623 (6GK1162-3AA00). If you use a CP1613 A2 or CP1623 then these modules must be configured as CP1613 in the STEP 7 hardware configuration.
It is not possible to use standard network cards in this case.

General information:
The requirement is that one of the two following configuration tools is installed on the Engineering Station.

• NCM PC: 
  NCM PC is supplied with the SIMATIC NET CD and permits you to create PC projects and open STEP 7 projects. It is not possible to use this software to edit the S7 blocks in the STEP 7 project. 
• STEP 7:
  STEP 7 is a separate software package and permits you to create S7-400, S7-300- and PC projects. It is possible to use this software to edit the S7 blocks.

Note:
You need an Engineering Station with STEP 7 for commissioning the PC station. STEP 7 is mandatory for configuring a fault-tolerant S7 connection between PC station and S7400-H system.
You need the license for the SIMATIC NET PC software S7-REDCONNECT on the PC station that communicates with the S7400-H system via fault-tolerant S7 connections.

Please follow the instructions below for configuring the PC station.

Guide_S7_H_OPC_e.pdf ( 1626 KB )

More information on communication with S7-400H systems is available in the manual "S7-400H" in Entry ID 1186523. Refer in particular to the information on communication with the OPC server in section 11.8 "General Information on Communication".

Keywords:
OPC server, CP1613, CP1623, Fault-tolerant S7 connection, Guidelines, REDCONNECT