Multipluss II with Usb mk3

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question

jtk asked Mar 29, '19

Multipluss II with Usb mk3

I am building the following system.

1. Multiplus II 3000

2. VenusGX

3. MPPT 150/100

4. 2x pylontech us3000’s

I first powered the Venus. Connected it to wifi and updated it. All good

Then powered the MPPT. Updated it and connected it to the venus. All good

Then built the correct cable for the batteries. Connected them and set them up in venus. Venus recognizes them. All good

Then put dc power to the MP II. I can see the Multi on the venus but cant get the mk3 to recognise it. The VE config3 recognises the MK 3 but not the multi. It is a normal UTP cable right? From the mk3 to the multi?

I tried this in many configurations. As in directly to multi with no venus. And with venus connected but no go... any ideas? Byw. Venus sees the multi just fine with same cable that the mk3 does not see it with...

Multiplus-II

2 |3000

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mvader (Victron Energy) answered · Mar 30, 2019 at 04:52 AM

Hi JTK, thank you for the concise description.

There can be a difference in used pins in the network cable, between using it with VEConfigure on a laptop and using it to connect the GX device and the inverter/charger. So, things to try:

- test the cable with a cable-tester and/or try another one.

- see if the MK3-USB works with the GX device: make sure the GX device is running v2.23 or later; connect the MK3 USB plug into the GX, and the Multi (only) on the MK3. Not as well to the GX device. And then see if the Multi is recognised.

If all doesn’t work; the MK3 must be broken, contact your dealer for a replacement.

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jtk commented · Mar 30, 2019 at 05:02 AM

Sorry. I see you say i must plug mk3 into usb of gx and nothing else. Will try. If gx recognises multi through mk3 then mk3 is fine and cable is fine. Issue on laptop?

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mvader (Victron Energy) ♦♦ jtk commented · Mar 30, 2019 at 05:19 AM

Yes some strange issue on laptop or in VEConfigure.

An issue that I don’t understand.

I’ll get some help from a colleague in that situation.

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jtk mvader (Victron Energy) ♦♦ commented · Mar 30, 2019 at 01:29 PM

seems my reply did not make it. plugged mk3 into the venus and it worked. Plugged it back into the laptop and it worked as well. No idea why :) Same cable. Anyways. Setup and install is done. Need to still install current meter to make sure that I can grid tie..

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mvader (Victron Energy) ♦♦ jtk commented · Mar 30, 2019 at 01:34 PM

:-)

Thats the last result I expected, but I’m glad it helped!

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Modifications Space

Node Red Space

Answer 1 · 2019-03-30T01:39:47Z

JohnC answered · Mar 30, 2019 at 01:39 AM

Is it the same issue as described here? https://community.victronenergy.com/questions/12936/victron-interface-mk3-to-usb-device-not-recognized.html

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jtk commented · Mar 30, 2019 at 04:55 AM

No. Its not the same. The software recognises the mk3. I used the driver supplied by the software. It (the software) also updated either itself or the firmware on the mk3. When selecting the correct port it says mk3 detected then proceeds to check for a device but finds nothing...

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Answer 2 · 2019-03-30T05:07:42Z

Paul B answered · Mar 30, 2019 at 05:07 AM

JTK, Try another Cable and also try a shorter cable.

I had a site that everything worked fine when the cable was connected to the CCGX but connecting the same cable to the MK3 . the MK3 did not work , used a different cable closer to the multi and it worked fine

worth a try

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