How to connect the VM-3P75CT power meter together with a Voltsmile battery CAN-BMS on the same CAN-bus?
The Battery requires 500kbits/s and the power meter 250kbits/s. Both seem to have a fixed bite rate (no switch, no options in the VM-3P75CT VictronConnect menu). Is there a way to change the bitrate of the VM-3P75CT to 500kbits/s?
You can’t. The meter is vecan, it goes with vecan devices on the dedicated vecan ports.
Bmscan is a different spec and has its own port for that purpose. They don’t coexist on the same bus.
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That is not very promissing.
A Multiplus II GX has only ons CAN bus, so no seperate inputs…
With its connectivity limitations, you need to design the system carefully or choose an external cerbo.
Alternatively the EM24 is ethernet based.
There are always options when carefully planned.
In that case your only option, without buying a Cerbo GX, is to use the Ethernet port on your VM-3P75CT.
Indeed, Ethernet works. I do have the impression though that the update rate is relatively low. And in my view, real-time sensor data is preferably not part of an ethernet network. CAN was designed for this. Hence, having a CAN output on the sensor and CAN master in the MP, this would be preferable. Apparently, the implementation of mixing data processing of both power sensor and battery management info is not implemented somehow. Maybe this is something for a future release.
Still, I don’t understand why the CAN bitrate is fixed. Both for the sensor and the battery. The intention of a CAN bus is being generic supporting multiple nodes. It now causes implementation limitations. What would the reason to choose for a fixed bit rate?