RESEARCH
1. https://www.victronenergy.com/live/venus-os:start
2. https://community.victronenergy.com/questions/118934/bms-can-ports-running-the-vecan-nmea2000-protocol.html
3. https://community.victronenergy.com/questions/77903/250-kbitss-battery-on-multiplus-ii-gx.html?childToView=118964#answer-118964
4. https://community.victronenergy.com/questions/53457/can-i-connect-more-than-one-bms-to-the-venus-gx.html
From
[1].(15) - BMS-Can port is a port dedicated to be used for connecting managed batteries
[1].Second CAN-bus port (also features BMS-Can (18)) 1.(18) The secondary CAN port,
available on some GX devices as per table above, can be configured
to be used as a BMS-Can port, as well as other profiles
Thus it is suggested that the "BMS-Can" is a "Feature" added to the construct of CAN-bus port. However 1.(14) states "The hardware does not meet the requirements for a VE.Can port; and therefore is BMS-Can only. "
While[4] states "The BMS-Can protocol doesn't use addressing". (I believe protocol should be port).
Furthermore it is inferred the BMS-Can port and CAN-bus port are really running the VE.Can / NMEA2000 Protocol but ignoring the addressing priority built into the protocol (maybe through some hardware omission in hardware or protocol stack).
Question 1. Thus, what is the difference between VE.CAN port, CAN-bus port and BMS-Can port?
Question 2. Some GX devices (Venus GX and Octo GX) have secondary ( non-isolated) CAN-port with active BMS-bus feature. [1.(18)]. Does then mean a second battery can be monitored and managed by the Venus or Octo with the active second port? If so, can the batteries have separate Shuts or system voltages?