Title: Hardware Installation Guide.pdf
RS-485 Cable Termination from ISC to Downstream ModulesTermination of this section of the RS-485 bus always remains the same. Each end of the RS-485 bus must be terminated using the on-board jumpers provided with each piece of hardware. Please refer to the termination drawings for each component being installed in this hardware manual.Note:This applies to Ports 2, 3, 4, and 5.20.2.5Baud Rate DefaultJumper J25 is used to configure the default baud rate for port 1 on the ISC board. This jumper should be set to 115 Kbps, which is setting 2-3 on the ISC board. This jumper should be set for 2-3 and should not be changed to anything else.321revision 6 — 109LNL-2000 Intelligent System ControllerTypical Downstream Communication Configuration (note where EOL terminators are required)32 Downstream Devices TotalRS-485 Multi-drop 2 or 4 wireIntelligent System ControllerDownstream Communications  Four 2-wire ports  Two 4-wire ports  Combination 2 and 4 wire ports