DeviceNet Slave Communication Module IFD9502 z By RS-485 communication DVP-PLC Application Manual 41 IFD9502 DOP DB9 female (RS-485) DB9 male (RS-485) 5 (2) 485+ 5 9 DATA+(8) 9 4 4 8 (3) 485+ 8 3 3 7 7 2 (1) 485- 2 6 DATA- (3) 6 1 (4) 485- 1 DB9 female DOP COM2