I can save you some time and tell you straight up that the Canbus port will not work for Solar Assistant once you go out of 00 mode. The Sol-Ark stops sending all available data on the port and switches into battery subroutine that just communicate with the battery pack number selected. Does not matter if you try Pins 6,7,8, or 1,2,3. Same thing.
The Modbus/RS485 port is also not going to work as it is disabled for some reason.
It will be interesting to see what the splitting of the RS232 produces. Please keep us updated.