Modbus TCP Compactlogix to Cerbo GX

[jerrod]

I have a Rockwell Compactlogix to a Cerbo GX using Modbus TCP. The Cerbo has a Lynx Smart BMS NG with a Lynx Distributor for the Lithium NG batteries and a Lynx Distributor for 3 Quattros.
Using the TCP Register list, I am able to pull various data from the com.victronenergy.system service name. Due to the notes it was obvious to use 100 for the unit ID. I am failing to understand how to associate the other unit ID’s with the service names.

Somewhere I saw that you could see the ID’s in the Touch GX and all that I could find was the Product ID of the Lynx and it shows it to be a 0xA3E4 which matches to nothing in the Register list.

Ultimately, I am simply attempting to detect a blown fuse on one of my two Distributors.

Any thoughts or comments welcome.

Jerrod

[ricardocello (Rick)]

The second tab of the excel file has the mappings to/from UnitId and Device Instance.
https://www.victronenergy.com/upload/documents/CCGX-Modbus-TCP-register-list-3.50.xlsx

The list of unit IDs is in the console here, and in VRM under device list:

[jerrod]

That definitely got me down the correct path. Thanks!