Maintenance Events; Maintenance Messages, Their Meaning And Possible Remedies - Siemens SIMATIC ET 200SP HA Equipment Manual

Diagnostics mes‐ Error
sage code
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 45R ...) are suitable for use with I/O modules in IO redundancy.
A.5

Maintenance events

Maintenance events
A maintenance event is generated each time a maintenance requirement is identified. The MT
LED lights up on the module.
Maintenance messages are assigned either to one input on a channel-specific basis (HART error)
or to inputs as a module message affecting all inputs.
Maintenance messages have no direct effect on the function of the module or the analog value
acquisition. Maintenance events of the HART communication do not affect the analog value
acquisition of the module.
Table A-2

Maintenance messages, their meaning and possible remedies

Maintenance Error
message code
Redundancy part‐ 120
H
ner has different
hardware/firm‐
ware version
IO redundancy 121
H
warning
HART communica‐ 141
H
tion error
AI 4xI 2-/4-wire HART ISOL HA
Equipment Manual, 07/2022, A5E50101523-AB
Assignment Meaning
Module A memory block error was detected on the
support module
Module A memory block error was detected on the
terminal block
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
Analog input
• HART field device is not responding
• Timing error
• HART field device did not understand the
command that was sent (1st status byte)
Parameters, diagnostics messages and address space
A.5 Maintenance events
Remedy
Replace carrier module
Replace terminal block
Remedy
Check and replace modules
• Check/replace right module
• Check/replace left module
• Check/replace terminal
block
See also system manual Distrib‐
uted I/O System; ET 200SP HA",
section "Replacing an I/O mod‐
ule for I/O redundancy"
• Check the process wiring
• Correct the parameter as‐
signment
• Set current ≥4 mA
• Increase number of config‐
ured repetitions
65