RS-485 Daisy chain with Digi one IAP

I have 4 motor relays and a PQM daisy chained and connected to Digi one IAP. At the top end I am using a Modbus/TCP converter (Kepware) for retrieve information from relays and pqm. How do I configure the Digi one IAP to get the required information from all the equipment?

We are connecting the Digi IAP module to a MOXA ICF-1150
fiber converter using 4 wire setup, we terminated (1)pr on pins 3&4 and pr(2) to 6&7 set the DIP Switch (1)OFF (2)ON (3)OFF (4)OFF

Not getting linked ?