I am developing a PCB in which I have ISO35 which is communicating well with RS485 Full Duplex slave but its not communication with half duplex slaves. In half duplex whatever master is sending is being received at slave but whatever slave is responding is not received at master. For half duplex interfacing I have shorted Y with A, Z with B at the end (J8pin2 with J9pin1, J8pin1 with J9pin2 -> refer to schematic attached below). In my circuit, R(t) of 100 ohm between A&B. RE pulled down with 10K. R & DE pulled up with 10K. With this configuration, I suppose master should receive whatever master is sending but its not happening too.
Could you please suggest where I am going wrong.