I am having some problems using the node-red inject node to turn my Blue Solar mppt 150/70 -tr to turn it on and off - worked fine with can bus and mod bus through the venus gx but am trying to control direct from the raspberry pi node-red flow. My problem is getting the correct msg payload message to inject up the serial link - From the VE.DIRECT Protocol Blue and smart solar MPPT Chargers document (quite difficult for me to understand) I can see that register 0x0202 bit 1 needs to be set to 1 and register 0x0200 needs to be 4 for off and 1 for on - I just need to know the payload type and exact messages please - many thanks in advance