Siemens CPU 410-5H Process Automation User Manual

System modifications during redundant operation
10.3 Adding components
CPU 410-5H Process Automation/CPU 410 SMART
142 System Manual, 10/2013, A5E32631667-AA
10.3.3
Step 3: Stop the standby 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.
Although I/O access errors of the one-sided I/O will result in OB 85 being called, due to the
higher-priority CPU redundancy loss (OB 72) they will not be reported. OB 70 (I/O
redundancy loss) is not called.
10.3.4
Step 4: Download new hardware configuration to the standby 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 new hardware configuration of the reserve CPU does not yet have an effect on ongoing
operation.

Siemens CPU 410-5H Process Automation Specifications

General

Brand	Siemens
Model	CPU 410-5H Process Automation
Category	Controller
Language	English