Setting the End-of-Line Switch - Johnson Controls - Part No. 24-10050-57 - Gateway/Router

BACnet Router Installation Instructions

Brand
Johnson Controls
Document type
Installation Guide
Document number
Part No. 24-10050-57
Document revision
B
Revision date
2018-05-01
Language
English

RS485 serial protocol bus segments require proper EOL termination to reduce interference from signal bounce back on the bus segment.

MS/TP Bus applications require a terminated device at each end of each MS/TP Bus segment. See the Wiring Rules and Guidelines for Network Integrations section for more information on EOL requirements on an MS/TP Bus.

The BACnet Router is shipped with the EOL switch in the factory default, ON (up) position (Figure 1). See Figure 2 to determine the appropriate EOL switch setting for the BACnet Router on the MS/TP Bus.

Figure 1. MS/TP Bus EOL Switch in the Factory Default ON (Up) Position

Figure 2. EOL Switch Setting MS/TP Bus