LonWorks Network Access from the Sensor - Johnson Controls - LIT-12011795 - Field Device

LN Series Communicating Sensors Installation Instructions

Johnson Controls
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Installation Guide
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The LonWorks network is optionally available from the LN-SVSENx-0 sensor audio plug port. To connect the main LonWorks network to the LN-SVSENx-0 sensor subnetwork Cat 5e cable, set the two Net to Subnet Port Settings jumpers inside the LN-PRG series controller to Enable (Figure 11).

Figure 1. Net to Subnet Port Settings Jumpers

This setting creates a free topology LonWorks network with a maximum total length of all segments to be no more than 500 meters (1,600 feet). The Cat 5e cable length may also be restricted by the maximum allowable subnetwork bus length (see Subnetwork Bus Total Length).

For more information, refer to the N-Series Network Communication and Interface Guide Technical Bulletin (LIT-12011253).

Figure 2. LonWorks Network Free Topology

To temporarily access the LonWorks LAN for commissioning and maintenance purposes, connect a LonWorks network interface to the audio plug port located on the lower edge of the LN-SVSENx-0 sensor. Wire a standard three-conductor 3.5 mm (1/8 in.) stereo jack as shown in Figure 13.

Figure 3. 3.5 mm (1/8 in.) Stereo Jack Connection for a LonWorks Network Interface