Flowire CCo

One of the Flowires in a cluster must be CCo - Central Coordinator. CCo is essentially a bus master. By default the Flowires automatically negotiate by them selves who is to be CCo.

By cluster we mean Flowires on a physical bus that share NMK - Network Membership Key. If several NMKs are used, each "NMK-group" will have its own CCo.

But if there is more than two Flowires in a cluster it can make a difference which Flowire is the CCo. If the CCo Flowire is lost, then the communication in the whole cluster will stop for several seconds until a new CCo is agreed up on. Therefore it is best that a rack-side Flowire is CCo, so that a endpoint-side Flowire out in the field can be lost without affecting the rest of the cluster. For point-to-point link between two Flowires it d

Since Flowire SW version 4.1.3.10 it is possible to configure CCo mode, under the section "Configured PLC Role".