Siemens SIMATIC S7-400H - Custom Connection to Single-Channel Systems

Communication
14.5 Communication via S7 connections
S7-400H
System Manual, 03/2012, A5E00267695-11
243
14.5.4 Custom connection to single-channel systems
Connection via PC as gateway
Fault-tolerant systems and single-channel systems can also be via a gateway (no connection
redundancy). The gateway is connected to the system bus by one or two CPs, depending on
availability requirements. Fault-tolerant connections can be configured between the gateway
and the fault-tolerant systems. The gateway allows you to link any kinds of single-channel
system (e.g. TCP/IP with a manufacturer-specific protocol).
A user-programmed software instance in the gateway implements the single-channel
transition to the fault-tolerant systems, and so allows any single-channel systems to be
linked to a fault-tolerant system.
Configuring connections
Redundant connections between the gateway CP and the single-channel system are not
required.
The gateway CP is located on a PC system which has fault-tolerant connections to the fault-
tolerant system.
To configure fault-tolerant S7 connections between fault-tolerant system A and the gateway,
you first need to install S7-REDCONNECT on the gateway. The functions for preparing data
for their transfer via the single-channel link must be implemented in the user program.
For additional information, refer to the "
Industrial Communications IK10 " Catalog.
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