Sample Configuraton With 2 Im 153-2 For Redundancy In A - Siemens SIMATIC ET 200M Manual

In the Redundant System
The IM 153-2 also supports the time stamp function in the redundant S7-400H
system.
Time Stamping Signal Changes in a S7-400H
The two IM 153-2 modules store the messages of the time-stamped signals. This
makes it possible, after a switchover operation from the active to passive IM 153-2,
for the "new" active IM 153-2 to forward the current messages to WinCC.
Note: During switchover between the two IM 153-2, signal changes are not time
stamped. You can see in WinCC when time stamping hasn't taken place.
You can find further information on time stamping in redundant systems in the
PCS 7 documentation.
S7-400H
programmable
controller
Redundant
DP master systems
Figure 3-5 Sample configuraton with 2 IM 153-2 for redundancy in a fault-tolerant system
Distributed I/O Device ET 200M
EWA-4NEB780600602-06
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WinCC
operator station (OS)
(system visualization)
ET 200M
distributed I/O device with 2 x IM 153-2
Configuration Options with the ET 200M
Time sender
(SICLOCK)
Industrial Ethernet
ET 200M
distributed I/O device with 2 x IM 153-2
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