Analog input channel 3 not working

Hi all 

I have wired up two 5K potentiometers to my Logo base unit (using a 6k8 series limiting resistor ) for simulation of analog signals

at first both channels worked fine giving a reading 0 -940 with  full rotation of the potentiometers whilst monitoring in online mode.

now AI3 is no longer working . 

i have measured the voltage input to the channel and its now 10.4v , so i am wondering if the channel has been overloaded ? 

has anyone else had an issue like this ? 

thanks 

OK

Thank you. 

Hi,

the default setting of a LOGO! with analogue on board is 2 AI on board. If you need more, then you have to change the configuration of the AI onboard from 2 to 4.

In LOGO! Soft Comfort go to : File, Properties, I/O Setting and change from 2 AI to 4 AI.

Hope this helps