Raymarine Axiom Operators Manual

[Nancy Benigar]

Ihave several devices in nk2 networks that send battery data such as Multiplus, MPPT, rec-bms and smart shunnt. Without modifications, only two batteries will appear on Raymarine instruments. (I have 3 battery banks) Based on testing to display battery data correctly on Raymarine, we have used a programmable interface and changed "device instance" and "data instance" to see how data is presented on Raymarine display. Changing the device instance as described in the Victron GX manual chapter 11.5.4 does not change anything on Raymarine instruments! (Tried this from the venus os menu as well) When we change the data instance, the battery is presented correctly. This was also the case on thread eg posted about 1 year ago about data instance. The question is why device instance is made available in menu on Venus os and manual describe that change of data instance is not recommended?

the Venus GX has via its UI (see user manual) the ability to change a device instance for an n2k device ... so this should avoid need to use the other methods described in victron nmea2000 documents ..

Sorry for the late reply, but we are currently testing all of this using a

programmable interface. The finding so far is that changing the device

instance as described in the Venus gx manual 11.4 does not change anything on

the presentation of batteries on raymarine. The same problem is discussed

in this thread "How to Change data instanse" that I posted 1 year ago and then I gave up getting this corrected.

But now I have received help from a good friend who is an expert in programming to analyze the problem. Based on my previously posted thread and response from "Greg and Mvader" as well as our findings with testing so far, Raymarine uses "data instance" to identify multiple batteries. Why it is described in detail about device instance and this is made available in Venus gx menu I am not sure. Raymarine and Maretron definetely use data instance. Maybe other manufacturers use device instance?

I want to make a new thread about this that is more descriptive and delete this one. The problem applies to many victron products that send battery data and not just mppt so a discussion about device instance and data instance will be more appropriate.

Just confirmed by Victron (mvader) that Raymarine uses data instance. See my question "How to change data instanc". So then our testing with interface was correct and we know this for sure. Unfortunately, it is complex to change without a good knowledge of programming. Expensive to buy hardware, but maybe the dealer or others have that you can borrow?

has anything changed to make it easier to change data instances? i have the same issue with my raymarine reporting my multiplus and BMV both as the same battery and the values flipping between one another.

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