Title: Hardware Installation Guide.pdf
[J12] OFF: Port 3 RS-485 EOL termination is not on ON: Port 3 RS-485 EOL termination is on10.2.1RS-485 Cable Termination from Host to ISCThe device used to convert RS-232 communication to RS-485 determines the termination necessary for this segment of the RS-485 communication bus. These communications devices, pre-bias the RS-485 signal, which marks the state of the signal being sent and allows the line to flow for reliable communications. This is true for most devices that are used for Host to ISC communications, but any device that has been approved by Lenel will indicate how termination should be configured for proper operation in its documentation.10.2.2RS-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: