turck BL20 Series - 7.10.4 Diagnostic and status messages

Digital Input Modules
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7.10.4 Diagnostic and status messages
LED status displays
LED Display Meaning Remedy
DIA Red Module bus communi-
cation failure
Check if more than two ad-joining electronics modules
have been pulled.
Check the supply of the module bus.
Off No error messages or
diagnostics
–
11 Green Status channel 1 = 1
Off Status channel 1 = 0
21 Green Status channel 2 = 1
Off Status channel 2 = 0
31 Green Status channel 3 = 1
Off Status channel 3 = 0
…
161 Green Status channel 16 = 1
Off Status channel 16 = 0
NOTE
The numbering of the channel LEDs corresponds to the numbering of the connectors at
the base module.