Title: Hardware Installation Guide.pdf
Downstream Device Communication Wiring (Ports 2-5)TR2+TR2+Port 2TR2-Port 2TR2-GNDGNDTR3+TR3+Port 3TR3-Port 3TR3-GNDGND2-WIRE Typical4-WIRE TypicalPorts 2 - 4, RS-485 (Wire with 24 AWG stranded twisted pair(s) with shield)revision 6 — 101LNL-2000 Intelligent System ControllerRS-485 Communication WiringRS-485 CABLE, 100 Ohm IMPEDANCE BELDEN 9842 OR EQUIVALENTTO PREVIOUS UNIT OR TERMINATORTO NEXT UNIT OR TERMINATORKEEP DOWN LEAD SHORT (10 FEET MAX.)Reader Interface ModuleTo configure all four downstream ISC ports as 2-wire RS-485, follow the 2-wire diagram and repeat on each set of three terminators, TRX+, TRX-, GND.To configure as two 4-wire RS-485 ports, follow the 4-wire diagram:Port 2/3:(Transmit)(Receive)GRDTR2+, TR2-TR3+, TR3-Port 4/5:(Transmit)(Receive)GRDTR4+, TR4-TR5+, TR5-or combine 2-wire and 4-wire RS-485:Port 2/3:(Transmit)(Receive)GRD4-wireTR2+, TR2-TR3+, TR3-Port 4:TR4+, TR4-GRD2-wire