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communication protocol

How to contact the Community Manager & Site Admin

What is the best way to get in contact with the Community Manager for site administration issues (accounts, emails, file attachments, etc)?

Guy Stewart (Victron Community Manager) asked
philip-donner commented ·

1 Answer

Pylontech LV Hub Communication protocol

What cable do you use between the Pylontech LV hub and Cerbo GX. I am getting no comms using either of the Victron BMS Can cables (type A or B)

marc-1 asked

0 Answers

Multiplus 2 GX Communication problem


I have several installations in which i used a Victron Multiplus 2 GX and I had some problems in most of these installations, i think the problems that I am facing are related to the communication with the built in GX device.

These are some of the problems that I faced:

1- The screen turned off in 2 installations,

2- The Connection with the GX device embedded in the inverter is not good, no data is transferred to the VRM, noting that all the connection cables are new, it works only after rebooting the remote console, but after some time, the problem returns,

3- The icon of the PV solar charger disappeared and then appeared after rebooting the remote console, but after a few minutes it disappeared, the system saw that there was no PV so the batteries were discharging, Also noting that the connection cables (VE direct in our case) between the chargers and the inverter are new as well,

4- The GX reboots randomly, and in the VRM the inverter appears OFF, the client thought that there was no electricity in the house while is was ON.

Hoping to get some help regarding this topic

Thanking you

hanyhc asked
Daniël Boekel (Victron Energy Staff) answered ·

1 Answer

Multiplus-II 12|3000 + Cerbo GX + Firefly multiplex system can they communicate via CAN-bus?

I would like to replace my current Magnum MS-2000 inverter with the Victron Multiplus II, adding the Cerbo GX for Bluetooth and LAN monitoring… upgrading to LiFEPO4 batteries and a Victron MPPT solar charge controller and solar panels as well. I think I can get all of the Victron components to communicate with each other, and via Bluetooth and LAN to an iPhone via app - but would like to talk to the Firefly multiplex system as well. The Magnum inverter has a RJ45? CAN bus connection that passes information to the Firefly and onto a display within my RV. The data passed includes: shoreline Voltage and frequency - line 1 and line 2. Inverter on/off, battery charge level, battery voltage, chassis and coach, auto generator start on low volts or high temp (temp may come from other sensors).

what information I have gathered so far indicates that the Magnum inverter and the Firefly are communicating via CAN-bus.

I am a real amateur at this CAN bus and VE-bus stuff, but willing to learn. help!

jrampey asked

0 Answers

Easy solar 5000 wired interface for configuring and monitoring

Is it possible with one wired interface to be able to monitor and configure both MPPT and inverter with

  1. EasySolar 48/5000/70 MPPT 150/100 Color Control
  2. EasySolar-II 48/5000/70-50 MPPT 250/100 GX

If so which is the interface to do so for the above two units?


prithvi asked
JohnC commented ·

2 Answers

Carlo Gavazzi energy metter protocol

I am an IT developer, I have an energy meter in my system and I want to emulate Carlo Gavazzi's energy meter protocol to talk to a multiplus II, is there a communication protocol specification?

jordi-gras asked
kevgermany edited ·

1 Answer


Moderator Note: This is (or was) blatant SPAM. Please don't continue with it.



arima asked
JohnC edited ·

0 Answers

How to stop VictronConnect search for COM ports - Phoenix Inverter Smart?

When software VictronConnect start on Windows, its looking for connected Victron HW connected by VE.Direct to USB interface cable. It will search for some COM port conmnection. OK. Application will find the Inverter, connect it, works as expected. But I have alreaqqdy some other COM port occupied by other HW, especially security devices. In the case application test othert COM ports for possible Victron device, my security device evaluate this test as possible fault of communication and start false allarm. It is done only when application start and I start my connected inverter - so not big issue then. But it means, that it will happen every time the computer will Restart. Just for Inverter it is annoing (no historic data, no VRM connection), OK. But in case I upgrade system for BMV-712 for example, than I have to find the way how NOT let VictronConnect test particular COM ports as mandatory.

Does exist some solution to STOP VictronConnect applicatioon COM port search? Or another way maybee just block particular COM port to be connected by such application?

Thanks for ideas!

ivo12s asked
northstar commented ·

0 Answers

Wer hat es geschafft, eine Victron Installation (MultiPlus, Solarregler …) mit einem KABE Smart D System zu koppeln?

Halle zusammen,

ich fahre ein Kabe Travel Master Royal I760lgb Modelljahr 2020. Die Bedienungsanleitung zum Fahrzeug findet sich hier: KABE verbaut keinen klassischen Elektroblock sondern setzt auf eine digitale „smarte“ Steuerung, die sich KABE Smart D (ähnlich dem Cerbo GX mit Display) nennt. Das System basiert auf einer BUS Architektur. da ich nunmehr eine Solaranlage, nebst MultiPlus und Liontron Lithium Batterien in meinem Fahrzeug habe, würde ich die Victron Komponenten gern an das KABE System anschließen um alles von einer Stelle aus „messen, regeln und steuern„ zu können.

Da ich bisher keine Informationen gefunden habe, um die Victron Installation mit meinem KABE Smart D zu verbinden und auch niemanden kenn, der weiß wie’s geht, frage ich hier die Community.

Icb würde mich freuen, wenn sich Jemand meldet, der eine solche VICTRON <=> KABE Smart D Anbindung realisiert hat und mir entsprechende Informationen zur Verfügung stellt.

mykabe asked

0 Answers

Where is the detailed excel Modbus-TCP register list?

The GX Modbus-TCP Manual ( keeps talking about an excel spread sheet, but I can't find it. The above manual also has a link for white papers that would include the spread sheet (, but it's not there either.

The GX Modbus-TCP Manual includes the following example: "The Modbus-TCP reply will contain 2302. Divide it by 10, as specified in cell E3, and then you have the voltage: 230.2 Volts AC."

Does anyone know where I can find this excel spread sheet? TIA...

edgargw22 asked
edgargw22 commented ·

1 Answer

firmware without text protocol?
Is it possible to get a firmware for a bluesolar mppt 100/50 without a text protocol? I am currently programming a surplus control on an arduino and need the values at very short intervals. Reading out the data via hex already works, but it is too slow.

calimero asked
calimero edited ·

0 Answers

Question about the CAN IDs of the Venus GX (VGX) messages

Hello, I am using a Venus GX to communicate with an MPPT. I have connected a PCAN transceiver to the CAN 2 port of the VGX (not the VE.Can port) and I receive frames with the following CAN IDs:









I would like to know which information is within each CAN frame so a PLC can use it for analysis. Can anybody please help me to find any document which explains the information sent by this port? In the Victron's documentation I've found only the PGNs but this is not useful as I want to use the information sent by the raw CAN bus.

msurca asked
cogito44 answered ·

1 Answer

Color Control SNMP Support

Does the color control have SNMP support? We want to use to connect for our scada system. Can you help me?

cagataysahinoglu asked
Guy Stewart (Victron Community Manager) answered ·

1 Answer

Lynx Shunt VE.Can specs and setup


I am trying to find a datasheet of the Lynx Shunt VE.Can but am not able to.

More specifically I would like to know the resolution and accuracy of the current measurement.

I intend to use this together with some own developed components and interface through CAN, but will I need a CCGX, VGX to set up the Lynx shunt? Or is it possible to set it up through the CAN interface?

candela asked

0 Answers

250 Kbits/s battery on Multiplus II-GX ?


We are installing lithium batteries with their own BMS working at 250 kbits/s using EasySolar-II GX and Multiplus-II GX units. It seems the Multiplus-II GX units do not have the 250 kbit/s baud rate option, as do all the other GX units.


Is there a way to get the Multiplus-II-GX to work at 250 kbit/s? Changing firmware perhaps?

The batteries have been tested with a Color Control GX and work fine. But it is not working with the Multiplus-II GX.

Any help is appreciated. We have 450 units of those standing by...


Jordi Faxedas

jordifax asked
alan answered ·

4 Answers

Communications to DC-DC charger from Color Controler GX


I have a great Victron System with the Color Control GX, Battery Monitor, 3000W inverter , 2 level monitors, 150/70Smart Solar and the 12/12/ 30 amp DC to dc charger. I love that i can get so much data and reports from these devices, but miss the ability to see the charge data from the 12/12 charger. Is there plans to have it communicate with the Color control, or will it always be walled off?



mike-hoffinger asked

0 Answers

Rewards ? - How does this work

I have no idea where to post this :)

How do the rewards work?

Lyndsay Cotton asked
Guy Stewart (Victron Community Manager) answered ·

1 Answer

Can ATT support the new GSM LTE modem in the USA?

I would like to buy the new LTE modem, but it is not yet on the approved list at ATT. That does not mean it does not work, but they have not tested it yet.

Does anyone have experience with this yet?

Many thanks,

jfrieschuetz asked
Tsama Parsons-Pineda edited ·

1 Answer

Can API be used for discharge / recharge import / export grid?

Hi there,

I live in an area with notoriously bad dirty (low voltage) power issues and as a result have an interesting spike in power price. I am wondering if the API can be used to instruct discharge when price is high and similarly charge from grid when price is low?

I have not been able to deduce these commands from the api docs here:

I have written a program to handle spot price already, I am just trying to figure out the best way to instruct victron.



Mike Casey asked
Mike Casey answered ·

1 Answer

Coms issue

Unit: Easy Solar 48 5000VA 70A


My laptop won't communicate with this system using the VEConfiger 3 software using a VE.Direvt to USB cable connector plugged into the back of the color controller.

The soft ware can't auto detect the com port, does any one have any ideas on this issue please?

dallas-kugel asked
dallas-kugel answered ·

2 Answers

Color Control showing inverter in "Off" State

We have a small off-grid system that includes a Color Control, BMV, Phoenix Inverter and Solar Charger.

In the system overview screen, the Color Control shows the inverter as "Off", despite showing AC loads. In the "devices" list, the inverter shows up, and we are able to see the details and see that its state is "inverting". (see attached screenshots).

Firmware on all devices is up to date and we have checked the pins on the VE.Direct cable to ensure there is no damage/debris.

The system is still working fine, the only issue is the erroneous state, but obviously we would like the customer to have a fault-free system. What could be the issue here?


Elliot Morgan asked

0 Answers

Communication Cables advice

Hi all,

We have a client looking to install a hybrid solar system with a small battery backup as well as exporting to the grid. The client wants a Victron system and he has his own panels.

72 x 330W solar panels to be wired with 3 x SmartSolar MPPT 250/100-Tr VE.Can chargers

3 x Quattro 48/10000/140-100/100 inverters (1 for each phase)

1 x Color Control GX

Can you please help me with what cabling and communication I would need to order?

I saw some pictures online with VE Direct cables and network cables, but I am not at all experienced with how the Victron systems communication works.

Thank you in advance, and let me know if there is any additional info needed to help.



rvsolar asked
rvsolar commented ·

1 Answer

Is it posible to connect on parallel a Phoenix multiplus 24/3000/70 and a multiplus 24/3000/70?

Is it posible to connect on parallel a Phoenix multiplus 24/3000/70 and a multiplus 24/3000/70?

Abel Ivars asked
Abel Ivars commented ·

1 Answer

Can not connect to smart dongle via Bluetooth using Samsung a8

I just purchased a new Samsung a8 and am unable to connect to my 75/15 mppt controller and Bluetooth smart dongle. The dongle is not visible in the Victon connect app device list and does not appear when searching for Bluetooth devices

I can still connect using my old Samsung S5 phone and using my partners Samsung a5. I have updated the mppt and phone to the latest firmware but this did not solve the problem. the Samsung a8 connects to all of my other bluetooth devices such as my laptop, bluetooth speaker and other phone.

Any help would be appreciated

ryan asked
friaras answered ·

2 Answers

Alternator w/ WS500 and Victron Venus or Cerbo

I love the Victron Venus system and would love to upgrade to the Cerbo (if i can every get my hands on one). I'm currently in the process of upgrading our alternator on our yacht. For this we will use a WS500 regulator which has the ability to get data from the victron BMV shunt in order to control voltage and Amperage coming from the alternator.

My question: is there anyway to see only alternator output through a venus or cerbo device? I know that the WS500 has a CAN bus but i would be unsure how these two devices would communicate or if there would be any way to display that information. It would be very helpful to understand what all the charging systems are doing (solar, wind, alternators, etc) on a single screen.

I do believe the answer is, no, there is no way to do this but i figure i would ask before i close the door to the idea.

polarseal asked
Paul B answered ·

1 Answer

Get AC output informations via CAN

we are developing an aggregator including 3 Multiplus 48/5000. Our controller is able to communicate via the VE.Bus to VE.Can interface. Currently we can control the inverters and read system informations using proprietary message on the NMEA2000 but cannot get informations about the load because I could not find such VREGs. Which I do not really understand because these informations can be read in the case of other devices.


I would like to ask how I determine the output power, current and voltage data of each phase on the VE.Can.

Balint Major

balint603 asked

0 Answers

Communication protocol BMV 7xx <-> Venus GX <-> Smartsolar

It seems as if i have a problem articulating my problem as even #victronsupport has given up on me..!!!

I have to alternate my venus GX firmware every morning to 'activate' comms between my venus and Mppt

My setup is as follows : Venus GX - V2.40 or 2.42, depending on what ran the previous day, MultiPlus 24/3000/70-50 v 433, BMV-700 v3.10 and SmartSolar Charger MPPT 150/60 v1.47.

The issue occured when i updated my mppt to latest firmware. I have tried all permutations of settings to no avail

In the morning when the mppt starts it loops on an error as can be seen in the video

From the attached graphs it can be seen that there is some misalignment between the components





@Daniël Boekel (Victron Energy Staff), hopefully this will tickle your interest again....

gwbn asked
gwbn answered ·

3 Answers

Communication protocol BMV 7xx <-> Venus GX

Hi all,

Could someone tell me what kind of "regular" communication is between Venus GX and BMV?

Planned system: MPPT+BMV+Phoenix C + Normal battery + Venus GX ( DVCC + SVS)

Why? I would like to use a monitoring of serial line between BMV and Venus GX (RX line from Venus GX point of view) for regulation purposes ... as a robust way ...

And ... I would like to be sure before buying of BMV and Venus GX ...

A) Is it Master (Venus GX) - Slave (BMV) communication (Victron HEX)? What is the request's frame rate?

B) Is it a type of broadcast communication of BMV (Victron simple TXT)? So Venus GX has every 1s updated information?

jit asked
Justin Cook - Bay Marine Supply USA answered ·

4 Answers

Smart solar MPPT 100/15 does has port?

I'm still in doubt if the smart solar MPPT does support

I know the Blue Solar MPPT will. Some sources states only Blue Solar...

I've an smart solar MPPT 100/15 (Bluetooth version). Does this version has the at the 4 pin connector below the fuse?

And if so what is the serial voltage 3.3 or 5V?

Thanks for clarification

tkmbe asked
Murray van Graan answered ·

1 Answer

Quattro - Battery data available on VE.Bus?

I am not very familiar with the victron communication universe.

Does the VE.Bus interface of a Quattro provide actual battery voltage and current (charing discharging) data? The device should because these data are necessary for control purposes.

And further more, can these data be logged, either directly on a computer (via MK3--) or via ethernet network (ethernet remote2+Router) without a BMV device?

In this case, can settings be done via this 2 connection options on the device (Quattro) or is an additional device ( VE.Dir. Blue. Smart Dongle ) for this purpose necessary?

The application is actual a test set-up in a Lab.

Kindest regards and thanks for the support.

Joss Fritz

jossfritz asked
JohnC commented ·

1 Answer


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