System Status Change From The Redundant System State - Siemens SIMATIC S7-400H System Manual

11.2.5

System status change from the redundant system state

Requirement:
You have opened the "Operating state" dialog using the PLC > Operating state menu
command in SIMATIC Manager.
Changing to STOP system state (stopping the fault-tolerant system)
1. Select the fault-tolerant system in the table.
2. Select the Stop button.
Changing to standalone mode (stop of one CPU)
1. In the table, select the CPU that you want to stop.
2. Select the Stop button.
Result:
The selected CPU goes into the STOP state, while the other CPU remains in RUN state; the
fault-tolerant system continues operating in standalone mode.
S7-400H
System Manual, 03/2012, A5E00267695-11
System and operating states of the S7–400H
11.2 System states of the S7–400H
127