Title: Hardware Installation Guide.pdf
Panel 1Panel 2JumperSettingJumperSettingJ5ON 485 pins 1 & 2J5ON 485 pins 1 & 2J9, J11Termination ONJ9, J11Termination ON19.1.3Downstream Device CommunicationThe ISC can be configured to communicate downstream with up to 16 input/output devices, using Port 2, Port 3, Port 4, and Port 5. Each of these ports can be wired only as an RS-485 (2-wire) interface, for multi- drop communication on a single bus of up to 4000 feet. If 4-wire communication is required, ports 2/3 and ports 4/5 may be setup as two 4-wire interface via host configuration.Ports 2-5 are defaulted to 2-wire, RS-485 communications that may be configured for either 2-wire or 4- wire operation. The interface allows a multi-drop communication on a single bus of up to 4000 feet (1,200 m). Use twisted pairs (minimum 24 AWG) with shield for the communication. Install termination jumper only for end of line unit(s) only.Each RS-485 line should contain only 2 terminators, one at each end of the bus.