Single-Channel, Switched Et 200M Distributed I/O - Siemens SIMATIC S7-400H Manual

Using I/O on the S7-400H
Figure 7-2
Rule
When you use a single-channel, switched I/O, the configuration must always be
symmetrical, in other words:
• The fault-tolerant CPU and other DP masters must be located in identical slots
n both subsystems (e.g. in slot 4 on both subsystems) or
• the DP masters must be connected on both subsystems to the same integrated
interface (e.g. to the PROFIBUS-DP interfaces of the two fault-tolerant CPUs).
7-6

Single-channel, switched ET 200M distributed I/O

Switched ET 200M
distributed I/O
DP/PA link or Y link
Automation System S7-400H Fault-tolerant Systems
A5E00068197-07