Incoming and outgoing RS485 cable shield wires should be connected together, but must not be connected to the Btu meter. 11451 Belcher Road South, Largo, FL 33773 • USA • Tel +1 (727) 447-6140 • Fax +1 (727) 442-5699 • sales@onicon.com D-100 Dual Network Interface Installation Guide 03/18 - 1015-2 / 35094...