I hope you can help. Im attaching a pic of a schematic I was given. My question is how can some of the inputs be positive and some be negative at the same time with terminal "M" being negative.

Thank you for any assistance

Steve Sprague

Hello,

What do you mean by negative?

Do you have a zero signal at the inputs or are you measuring -24V?

Best regards

Hello,

you ahave a input voltage range from 0..24 V. There is no possibility to use positive and negative voltage (24 V) at the same input module.

You can convert or invert the negative voltage before you connect them to the input module. Then should it work.

regards

CaOd