Maintenance Events; A.5 Address Space - Siemens SIMATIC ET 200SP HA Equipment Manual

Diagnostic Error code
alarm
Retentive memo‐ 154
H
ry in carrier mod‐
ule defective
Retentive memo‐ 155
H
ry in the terminal
block defective
1 Only the terminal blocks (TB 45 ...) are suitable for operating I/O modules in IO redundancy.
A.4

Maintenance events

Maintenance events
A maintenance event is generated for each identified maintenance requirement. The MT LED
lights up on the module.
Maintenance messages have no direct effect on the function of the module or digital outputs.
Maintenance Error code
message
Retentive memo‐ 154
H
ry in carrier mod‐
ule defective
Retentive memo‐ 155
H
ry in the terminal
block defective
A.5 Address space
Abbreviations
• "IB" stands for input byte, that is, the module start address in the input area
• "QB" stands for output byte, that is the module start address in the output area
• "DQ" stands for digital output
• "QDQn" stands for the value status (QI) of digital output n
RQ 4x120VDC-230VAC/5A CO HA
Equipment Manual, 07/2022, A5E39389042-AF
Drivers, parameters, diagnostics messages and address space
Assignment Meaning
Module An error in the RAM on the carrier
module was detected during start-up
Module An error in the RAM on the terminal
block was detected during startup
Assignment Meaning / Cause
Module Fault detected in the RAM on the car‐
rier module during operation
Module An error in the RAM on the terminal
block was detected during operation

A.5 Address space

Solution
Replace carrier module
Replace terminal block
Solution
Replace carrier module
Replace terminal block
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