The Industrial Raspberry Pi Forum

Hello,
Revpi AIO is flashing RED led when no inputs or outputs are connceted. The module is supplied with 24V DC
See here https://share.icloud.com/photos/0OAW6QF ... gg#Plovdiv

What can be the reason?

Hello,
this indicates an input range error(https://revolution.kunbus.com/tutorials ... revpi-aio/).
Can you check if one of the inputs is configured as 4-20mA input?

Hello,

You are correct - one of the unused input was set to 4-20 mA it measure 0 - so this is the reason of red flashes.
Thak you !