I still not understand.
Is Custom Control node a flow inside the NodeRed applicaton within CerboGx? If so, give me a screenshot within the NodeRed editor.
Is this node not needed anymore because Cerbo has the control to SolarEdge via ESS?
Another question:
There is a wire connection between Victrons AUX Relais (NO + COM) to interconnect to Solaredge Communication Board (L1+V). See details: Overvoltage, Cerbo GX controlling SolarEdgePV, Sunspec: ‘Dynamic power limiting’ option not working - Q&A and troubleshooting - Victron Community
Is it only relevant for frequency shifting?
Should we replace a communication board within SolarEdge SE10K from year 2020?