Diagnostics mes‐
sage
Error
code
Assignment Meaning Solution
Retentive memo‐
ry in carrier mod‐
ule defective
154
H
Module A memory block fault on the support
module was detected during start-up
Replace carrier module
Retentive memo‐
ry in the terminal
block defective
155
H
Module A memory block fault on the terminal
block was detected during start-up
Replace terminal block
1
Only the terminal blocks (TB 45 ...) are suitable for operating I/O modules in IO redundancy.
Maintenance events
A maintenance event is generated whenever maintenance is required. 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.
Table A-2 Maintenance messages, their meaning and possible remedies
Maintenance
message
Fault 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 A memory block fault 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 input module DI 8x24...125VDC HA (6DL1131-6DF00-0PK0)
Manual, 11/2017, A5E39288633-AB 33
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