P66 Inverter flashing when connected

We have four p66 inverters that all are flashing when connected to the powerlink network.
Flashing fast between “Node number”-cf1-nst-cf1
We have tried isolate one on the network,
Changed interface card,
Factory reset - All

The p66 inverters are in a network with P84 and two BC8321 Powerlink → X2X
The p66 were shipped with node number set. None have had node number as one of the P84,

We are using p66 everywhere, shipping several per week.

The p66 inverters are shown to not be connected, in SDM, the P84s are running.

--------------- Solved ---------------
Wrong setup made it go into a dead-loop.