System Status Change From The Redundant System State - Siemens SIMATIC PCS 7 CPU 410-5H System Manual

7.2.6

System status change from the redundant system state

Requirement:
● For CPU access protection with password: You have entered the CPU access password
with the menu command PLC > Access Rights > Setup in SIMATIC Manager.
● You have opened the "Operating state" dialog box using the PLC > Diagnostics/Setting >
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.
Result
Both CPUs switch to STOP.
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.
Note
Any set up access right is not canceled until you stop the SIMATIC Manager. You should
reset the access right once again to prevent unauthorized access. You reset the access right
in the SIMATIC Manager with the menu command PLC > Access Rights > Cancel.
CPU 410-5H Process Automation
System Manual, 09/2014, A5E31622160-AB
Operator controls and operating modes of the CPU 410-5H
7.2 System states of the redundant CPU 410-5H
113