WAGO-I/O-SYSTEM 750
Diagnostics 129
753-668/000-004 4FAI 0/4-20 mA Diff PROFIsafe
Manual
Version 1.0.0, valid from HW/SW Version 01/01
Table 49: Diagnostic Messages
Alarm
Description
PROFIsafe CRC2
error
Diagnostic
type
Module diagnostics
Coding
0x004D
LED indicator
Group error red
PROFIsafe status red, 1 Hz flashing
Description/
Remedy
A CRC2 error occurred during secure
communication. Check the communication
connection and acknowledge the error
message.
Classification
Error
Safety shutdown
due to internal error
Diagnostic
type
Module diagnostics
Coding
0x0219
LED indicator
Group error red, 2 Hz flashing
Description/
Remedy
The F I/O module has taken the safe state
and switched off the outputs. If the error
occurs repeatedly after restart,
immediately replace the F I/O module and
send it to WAGO for error analysis.
Classification
Error
Underflow
Diagnostic
type
Channel diagnostics
Coding
0x0291
LED indicator
Group error red
Channel status red
Description/
Remedy
The process value of the analog input is in
the underflow range according to the set
data format. Check the sensor wiring and
the sensor itself if necessary.
Classification
Error