I have set up a micro logix 1400 series b and a maple system HMI 520 -c to communicate on mod bus tcp ip. that part is working fine. I wrote one small line in plc with contact B3:0/0 and an output O:0/0 . On the HMI i have tried 00001 and 100001 as addresses with no luck hmi does not accept 00000 and 10000 as starting addreses. Can someone guide me to get hmi to turn on the output ????