4.21.1.4 Activity

This mode of link indication intends to extend the PLCA Status mode above and eliminate the limitations that the coordinator cannot detect the presence of follower nodes being available for communication. For PLCA followers, link will indicate true when PLCA beacons are regularly being received as in the PLCA Status mode above. However, when configured as a PLCA coordinator, link will indicate true once a packet has been received from a follower on the segment.

This mode requires a follower node to first indicate link by detecting PLCA beacons. Once the follower transmits a packet, the coordinator will then indicate link as well. As such, packets must be regularly received by the coordinator to maintain an indication of link.