turck BL20 Series - 8.8.4 Diagnostic and status messages

Analog Input Modules
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8.8.4 Diagnostic and status messages
LED status displays
LED Display Meaning Remedy
DIA Red,
flashing
0.5 Hz
Diagnostics pending -
Red Module bus communi-
cation failure or field
voltage U
L
not con-
nected.
Check if more than two ad-joining electronics modules
have been pulled.
Check the field voltage
U
L
.
Off No error messages or
diagnostics
–
1 -8 Green channel input active
Green
flashing 4 Hz
channel is in overrange
Green
flashing
0.5 Hz
channel is in under-
range
Off channel inactive