With the PMsystems you have to watch close when it is a byte or a BIT and if there is a value as well.
It is a question of testing each swith led or button because they all different each time.
AST works in a other way and have just for each switch the same offset and only the value ( that you put in your fsbus software) will change.. The leds they have put in 8 bits sections with each section a new offset
Succes
gr.
Frans M