I recently logged into a Schneider PLC (M241)machine and found a coding style I had never seen before. I understand what they are doing after a fashion, just not sure why it works.
They have assigned an INT to a coil as a means of avoiding duplicate coil symbols. I have always used a MOV function to write values to INT and do not understand the value change behavior that occurs when doing this.
They then simply use a >0 as a means of triggering output
Could anyone point me at an explanation or lesson on this? I am not a computer science programmer(can not read ST) and suspect that is why I do not know this technique already.
