Step 2: Stopping The Reserve Cpu; Step 3: Downloading A New Hardware Configuration To The Reserve Cpu - Siemens SIMATIC PCS 7 System Manual

10.6.3

Step 2: Stopping the reserve CPU

Starting situation
The fault-tolerant system is operating in redundant system mode.
Procedure
1. For CPU access protection with password: In SIMATIC Manager, select a CPU of the
fault-tolerant system, then select
"PLC > Access Rights > Setup" from the menu. Enter the CPU access password.
2. In SIMATIC Manager, select a CPU of the fault-tolerant system, then select "PLC >
Operating Mode" from the menu.
3. In the "Operating Mode" dialog box, select the standby CPU and click "Stop".
Result
The standby CPU switches to STOP mode, the master CPU remains in RUN mode, the
fault-tolerant system works in single mode. The one-sided I/O of the standby CPU is no
longer addressed.
10.6.4

Step 3: Downloading a new hardware configuration to the reserve CPU

Starting situation
The fault-tolerant system is operating in single mode.
Procedure
Load the compiled hardware configuration in the reserve CPU that is in STOP mode.
Note
The user program and connection configuration cannot be downloaded in single mode.
Result
The modified parameters in the new hardware configuration of the reserve CPU do not yet
have an effect on ongoing operation.
CPU 410-5H Process Automation/CPU 410 SMART
System Manual, 09/2014, A5E32631667-AB
System modifications during redundant operation
10.6 Re-parameterization of a module
169