when doing 1-2-5-1 test hit enter, it will show you 2 I/O that are addressed same, if one is output and one is input that's ok, then hit enter again and it will show you another matchup, keep hitting until it says test over. If you find 2 inputs with same address it will be a problem. Is 8-1 being used at I/O 391 also. Is 29-1 possibly being used somewhere else to????
