Diagnostics Via Led Indicators; Table 155: Signal Evaluation For Each Channel - Status Led; Table 156: Signal Evaluation For Each Channel - Error Led - WAGO 750-489 Manual

154 Diagnostics
Note how long diagnostics are indicated!
A diagnosed error status is indicated for at least 200 ms even if the detected
error status is no longer present in this period. If a higher-priority error status
occurs in this period, the higher-priority error status is displayed for 200 ms, and
the lower-priority error status is lost!
10.2

Diagnostics via LED Indicators

The indicators of the I/O module provide information about possible states and
cases of error. The tables below contain the interpretations of the signals.
Table 155: Signal Evaluation for Each Channel – Status LED
Status LED State
Green
Table 156: Signal Evaluation for Each Channel – Error LED
Error LED State
Red
Manual
Version 1.1.0, valid from FW Version 02
Possible Interpretation
Not ready for operation
Off Local bus communication absent or interrupted
Channel deactivated
Operational readiness and uninterrupted local bus
communication
Possible Interpretation
No error
Off Channel deactivated
Diagnostics deactivated
Underflow
Overflow
Measurement underrange
Measurement overrange
Internal error
WAGO-I/O-SYSTEM 750
750-489 4AI RTD/TC/Strain Gauge Ex i