Siemens SIMATIC PCS 7 CPU 410-5H User Manual

Failure and replacement of components during redundant operation
11.1 Failure and replacement of central components
CPU 410-5H Process Automation
System Manual, 09/2014, A5E31622160-AB
193
11.1.6
Failure and replacement of an IM 460 and IM 461 interface module
Starting situation
Failure
How does the system react?
The S7-400H is in redundant system mode and
an interface module fails.
• The connected expansion unit is turned off.
• Both CPUs report the event in the diagnostic
buffer and via OB 86.
Procedure
Follow the steps below to replace an interface module:
Step
What has to be done?
How does the system react?
1 Turn off the power supply of the central
rack.
• The partner CPU switches to single
mode.
2 Turn off the power supply of the expansion
unit in which you want to replace the inter-
face module.
–
3 Remove the interface module. –
4 Insert the new interface module and turn
the power supply of the expansion unit
back on.
–
5 Switch the power supply of the central unit
back on and start the CPU.
• The CPU performs an automatic LINK-
UP and UPDATE.
• The CPU changes to RUN and operates
as the reserve CPU.

Siemens SIMATIC PCS 7 CPU 410-5H Specifications

General

Brand	Siemens
Model	SIMATIC PCS 7 CPU 410-5H
Category	Controller
Language	English