Title: Hardware Installation Guide.pdf
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) TR2+, TR2-(Receive) TR3+, TR3-GRDPort 4/5:(Transmit) TR4+, TR4-(Receive) TR5+, TR5-GRDor combine 2-wire and 4-wire RS-485:Port 2/3: 4-wire(Transmit) TR2+, TR2-(Receive) TR3+, TR3-GRDPort 4: 2-wireTR4+, TR4-GRDPort 5: 2-wireTR5+, TR5-GRDNotes:The ISC can be located anywhere along the RS-485 line.Install an RS-485 terminator for each end-of-line device.84 — revision 6Hardware Installation Guide14.1.4PowerThe ISC accepts either a 12 VDC or 12 VAC ± 15% power source for its power input. The power source should be located as close to the ISC as possible.Wire the power input with 18 AWG (minimum) twisted pair cable.