PCD3.W800: how to detect if an output channel is in forced state

FAQ #101063

 

The hardware manual does not explain how to read the state of the auto/manual switch of the PCD3.W800 modules, the relevant information can be found in the online help of the PCD3.W800 FBox.

The state of the switches can be detected in the Error register output of the FBox, bit 0 is for channel 0, bit 4 for channel 1, bit 8 for channel 2.

A state 0 means auto, a state 1 means manual (forced output).