Replacement Of A Redundant Profibus Dp Interface Module; Replacement Of A Profibus Dp Slave - Siemens SIMATIC CPU 410 System Manual

Replacement of failed components during redundant operation
13.3 Replacement of components of the distributed I/O on PROFIBUS DP
See also
The H-CiR wizard (Page 197)
13.3.2

Replacement of a redundant PROFIBUS DP interface module

Starting situation
Failure
The S7-400H is in redundant system mode and a
PROFIBUS DP interface module (IM 153–2, IM
157) fails.
Replacement procedure
Proceed as follows to replace the PROFIBUS DP interface module:
Step
1
2
3
4
13.3.3

Replacement of a PROFIBUS DP slave

Starting situation
Failure
The S7-400H is in redundant system state and a
DP slave fails.
236
What has to be done?
Turn off the supply for the affected DP
interface module.
Remove the bus connector.
Insert the new PROFIBUS DP interface
module and turn the power supply back on.
Plug the bus connector back in.
How does the system react?
Both CPUs report the event in the diagnostic
buffer and via OB 70.
How does the system react?
–
–
–
The CPUs process the I/O redundancy
•
error OB 70 (outgoing event) synchro-
nized with each other.
Redundant access to the station by the
•
system is now possible again.
How does the system react?
Both CPUs signal the event in the diagnostics
buffer and via a corresponding OB 86.
CPU 410 Process Automation/CPU 410 SMART
System Manual, 05/2017, A5E31622160-AC