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CAN bus communication with VRV system - Printable Version

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CAN bus communication with VRV system - khalil - 10.02.2021

hello,
some VRV systems use CAN bus to communicate between indoor and outdoor units like GREE.
could we use the LM CANx protocol to communicate with the VRV system instead of using Modbus or BACnet gateway?

regards,


RE: CAN bus communication with VRV system - Daniel. - 10.02.2021

No our canX use only can as medium but protocol is different.


RE: CAN bus communication with VRV system - admin - 10.02.2021

LM has CAN FT while most other devices have CAN FD. The protocol must be known as well because CAN does not mandate data format.


RE: CAN bus communication with VRV system - khalil - 10.02.2021

(10.02.2021, 14:11)Daniel. Wrote: No our canX use only can as medium but protocol is different.

Thanks

(10.02.2021, 14:14)admin Wrote: LM has CAN FT while most other devices have CAN FD. The protocol must be known as well because CAN does not mandate data format.

So the use of CAN FT only for LM products?


RE: CAN bus communication with VRV system - admin - 15.02.2021

In theory it's possible to use any other CAN-FT products but for this you need to remove the CANx app and write all the communication logic yourself.