FieldServer FS20 Series: Connecting to ICD102A Optical Isolator via 2-Wire RS485
This diagram shows how to connect a FieldServer FS20 series to an ICD102A optical isolator using a 2-wire RS 485 connection. FieldServers only support 2-wire connections.
The datasheet for the Black Box RS485 Isolator/Repeater can be found here: Blackbox Network Services