VE.Can
The VE.Can ports can be used to connect to other devices, such as:
A GX device for monitoring and communication.
Other Multi RS devices forming a three phase system.
An energy meter such as the Victron VM-3P75CT.
Additional MPPT's like the MPPT RS or other VE.Can MPPT controllers.
VE.Can terminators should always be installed in the devices at both ends of the VE.Can network.