Title: Hardware Installation Guide.pdf
Configuration data and event/status reports are communicated via port 1 (primary) or port 6 (secondary), the host ports. RS-232 interface is for direct one to one connection to a host computer port, via modem or a plug-in ethernet module. When the ethernet module is used, port 1 must be configured as a RS-232 interface. I/O devices are connected via port 2 through port 5.Port 1 may be set up as a RS-232 interface or a RS-485 interface. RS-485 interface may be 2-wire or 4-wire type.revision 6 — 97LNL-2000 Intelligent System ControllerPort 6 may be set up as RS-232 interface or a RS-485 interface. RS-485 interface may be 2-wire or 4-wire type.Direct-connect RS-232 cables should be no longer than 50 feet. Leased lines or fiber optics can also be used.RS-232 Communications