Troubleshooting - Wireless; Rf Link Time-Out And Recovery - Gateway And Node - Banner SureCross DX80 Product Manual

Troubleshooting - Wireless

RF Link Time-Out and Recovery - Gateway and Node

The SureCross™ DX80 wireless devices employ a deterministic link time-out method to address RF link interruption or failure. As soon as a
specific Node/Gateway RF link fails, all pertinent wired outputs are de-energized until the link is recovered (see component data sheet for more
information.) Through this process, users of Banner wireless networks can be assured that disruptions in the communications link result in
predictable system behavior.
The link time-out feature uses a fully-acknowledged polling method to determine the RF link status of each Node on the network. If after a
specified number of sequential polling cycles the Node does not acknowledge a message, the Gateway considers the link with that Node timed
out. LCD displays on both the Node and Gateway show *ERROR. Following a time-out, the Node de-energizes outputs and the Gateway sets
all outputs linked to the Node in question to a de-energized state. Inputs from the Node mapped to outputs on the Gateway are suspended
during a link time-out.
Once a link has failed, the Gateway must receive a specified number of good RF communications packets from the Node in question before
the link is reinstated. Outputs are restored to current values when the link is recovered.
Link between Gateway and Node 1 timed out.
Link between Gateway and Node 1 recovered.
Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
26
P/N 132607