I am planning to add custom hardware which can take analog or digital inputs which is basically up to what this NX100 IO board's can offer. Also planning to have this custom hardware to send signals back.
Does someone know good documentation I should be looking for regarding to how to measure these IO's because I have at the moment no idea what is what like A1 or B1 and so on.
I saw I can switch for example first card relays on and off from universal outputs menu but didn't see any change in pins with multimeter. Some pins like B18 or B19 at third card gives out 24 volts when measuring with multimeter ground wire attached to cabinet ground.