Maintenance messages have no direct effect on the function of the module or digital outputs.
Table A-2
Maintenance messages, their meaning and possible remedies
Maintenance
message
Error code Assignment
Meaning / Cause
Solution
Retentive memo‐
ry in carrier mod‐
ule defective
154
H
Module
Fault detected in the data block on
the carrier module during operation
Replace carrier module
Retentive memo‐
ry in the terminal
block defective
155
H
Module
An error of the memory block on the
terminal block was detected during
operation
Replace terminal block
Drivers, parameters, diagnostics messages and address space
A.4 Diagnostics messages and maintenance events
Digital Output Module RQ 4x120VDC-230VAC/5A CO HA (6DL1132-6HD50-0PK0)
Manual, 11/2017, A5E39389042-AC
35