WAGO-I/O-SYSTEM 750
Diagnostics 83
750-564 4AO U/I
Manual
Version 1.0.0
10
Diagnostics
10.1 Error States and Possible Causes
Table 64: Error States in Current Output Mode
Diagnostics (Status Byte)
Possible Cause
Wiring Error
(0x42 hex.)
External voltage or short circuit on the analog
output in question (+AOx/−AOx) or sense input
(+Sx/−Sx)
−AO wiring error (0x44 hex.)
Short circuit between 24 V and −AOx
Wire break
(0x50 hex.)
•
Analog output (+AOx/−AOx) open/
excessively high-ohm (> 600
Ω)
•
External voltage on the analog output
(+AOx/−AOx) or sense input (+Sx/−Sx) in
question
•
Short circuit bSx and −Sx.
Power supply fault (0x60 hex.) Voltage for the field supply is too low
Table 65: Error States in Voltage Output Mode
Diagnostics (Status Byte)
Possible Cause
Wiring Error
(0x42 hex.)
External voltage or short circuit on the analog
output in question (+AOx/−AOx) or sense input
(+Sx/−Sx)
−AO wiring error (0x44
hex.)
Short circuit between 24 V and −AOx
Short circuit (0x48 hex.)
Short circuit on the analog output bAOx
and −AOx
Power supply fault (0x60 hex.) Voltage for the field supply is too low
10.2 Diagnostics via Display Elements
The display elements of the I/O module provide information about possible states
and cases of error. The tables below contain the interpretations of the signals.
Table 66: Signal Evaluation for Each Channel – Status LED
Status LED state Possible interpretation
Off
Not ready for operation
Local bus communication absent or interrupted
Channel deactivated
Green
Operational readiness and uninterrupted local bus
communication
