Maintenance Events - Siemens SIMATIC ET 200SP HA Equipment Manual

Drivers, parameters, diagnostics messages and address space
A.4 Maintenance events
Diagnostics mes‐ Error
sage code
Change-over contact 125
error
Retentive memory in 154
carrier module defec‐
tive
Retentive memory in 155
the terminal block
defective
Encoder signal flut‐ 310
ters
Only the terminal blocks (TB 45R ...) are suitable for use with I/O modules in IO redundancy.
1
A.4

Maintenance events

Maintenance events
A maintenance event is generated for each maintenance required identified. The MT LED lights
up on the module.
Maintenance messages do not have a direct influence on the functions of the module or digital
inputs.
Maintenance Error
message code
Redundancy part‐ 120
H
ner has different
hardware/firm‐
ware version
IO redundancy 121
H
warning
48
Assignment
Channel
H
Module
H
Module
H
Channel
H
Assignment Meaning / Cause
Module The redundantly configured and intercon‐
nected I/O modules are not compatible
Module Unable to correctly communicate with the
partner module
Meaning / Cause
Plausibility check between NC and NO
channel negative
Fault detected in the data block on the
carrier module during operation
An error of the memory block on the
terminal block was detected during
operation
Flutter error:
Signal changes too frequently within
the monitoring window
When the input signal stops fluttering
over three cycles of the monitoring
window, an outgoing diagnostics in‐
terrupt is triggered. The value state of
the current signal in the process im‐
age is set to "valid".
Remedy
Check the process wiring, re‐
place encoder
Replace carrier module
Replace terminal block
• Check flutter monitoring
parameter assignment
• Check the process wiring,
replace encoder if necessa‐
ry
Remedy
Check and replace modules
• Check/replace right-hand
module
• Check/replace left-hand
module
• Check/replace terminal
block
See also the "ET 200SP HA Dis‐
tributed I/O system system
manual, Chapter "Replacing an
I/O module at IO redundancy".
Equipment Manual, 08/2019, A5E39293880-AD
DI 16xNAMUR HA