Solution:

There are detailed drawings in the quick start guide for wiring.External jumpers are needed to bridge the inputs and outputs on each side.One side of the 485OPDR is common to the power supply, Terminal M (GND), Terminal J, +10 to +30 VDC, Terminal H (Out -) and Terminal G (In -) must be bridged for 2W operation, and Terminal L Out +) and Terminal K (In +) must be bridged. The other side is isolated Power and GND Terminal F, is the Isolated signal (Common Mode Reference) GND, Terminal D (Out - ) and Terminal E In -) must be bridged, and Terminal A Out +) and Terminal B (In +) Power and GND are isolated from the non-isolated side with a switching power supply.