turck BL20 Series - 12.1.2 Diagnostic and status messages

Technology Modules
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12.1.2 Diagnostic and status messages
LED status displays
Diagnostics
LED Display Meaning Remedy
DIA Red,
flashing
0.5 Hz
Parameter error
Check parameterization of the module.
Red Module bus communi-
cation failure
Check if more than two ad-joining electronics mod-
ules have been pulled.
Check the supply of the module bus.
Off No error messages or
diagnostics
–
A Green Counter input or mea-
suring input active
-
Off Counter input or mea-
suring input inactive
-
B Green Counter input inactive
or direction input set for
counting down
-
Off Counter input active or
direction input set for
counting up
-
14 Green Status of digital input =
1
-
Off Status of digital input =
0
-
24 Red Error on digital output Check the wiring of the digital output.
Green Status of digital output
= 1
-
Off Status of digital output
= 0
-
Count mode Measurement mode Assignment
(byte, bit)
short-/open circuit ERR_DO 0.0
Short-circuit sensor supply ERR-24 VDC 0.1
End of counter range wrong Sensor pulse wrong 0.2
Start of counter range wrong Integration time wrong 0.3
Invert-DI at L-retr. error
It is not permitted to invert the level of the digital input
when using the latch-retrigger-function
Upper limit wrong 0.4
Main count direction wrong Lower limit wrong 0.5