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PIP 6048MT (Axpert VM III Twin) battery connection troubles and firmware


WallK

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Hello! I have MPPSolar PIP 6048MT (look almost the same as Axpert VM III Twin, the orange one) and a Pylontech US5000 battery
I have them connected with RS485 (I also tried CAN) and I get warning 32 and bP for a split second every 10 minutes or so. Inverter loses connection to a battery (battery icon stops flashing) and it reconnects pretty fast. But in the meanwhile it tries charging it with CV even if BMS doesn't want it to so I get couple of seconds charging every 10 minutes. Very annoying!
I've seen in some changelogs for regular VM III "Increasing the reliability of Li battery communication with the display and inverter", maybe it's addressing the same issue I have?
Can I flash firmware from VM III? Maybe someone has Twin/6048MT specific firmware (for the remote screen)?

Thank you!

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On 2023/01/02 at 5:19 PM, WallK said:

Can I flash firmware from VM III?

I'm guessing that it would work up to a point, but you would lose any Twin functionality. [ Edit: I've changed my mind; see later posts. ]

What display firmware (U2 or QVFW3) are you running now?

Edited by Coulomb
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1 hour ago, Coulomb said:

I'm guessing that it would work up to a point, but you would lose any Twin functionality. 

What display firmware (U2 or QVFW3) are you running now?

It has only 4 touch buttons on it, so I could lose those too, hmm

Both display and WatchPower app say 25.06 (Secondary CPU Firmware Version)
U1 is 56.09

I also requested updates from vendor, but it doesn't seem like they are willing to provide it

Edited by WallK
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On 2023/01/02 at 11:15 PM, WallK said:

It has only 4 touch buttons on it, so I could lose those too, hmm

Ah. That's pretty serious.

I'm starting to think that these (which do seem to be the same as the Axpert VM III Twin) have very little in common with Axpert VM III non-Twin. I'd call it a "VM 3½" or "VM V" etc.

So I've changed my mind: I don't believe that you can use VM III non-Twin firmware (DSP or MCU firmware) in these so-called VM III Twins.

It turns out that I do have a VM III Twin display firmware, but it's version 25.03 and it was extracted via JTAG. So presumably, it's older than what you have now, though I can't be certain.

So: back to the waiting game.

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2 hours ago, Coulomb said:

Ah. That's pretty serious.

I'm starting to think that these (which do seem to be the same as the Axpert VM III Twin) have very little in common with Axpert VM III non-Twin. I'd call it a "VM 3½" or "VM V" etc.

So I've changed my mind: I don't believe that you can use VM III non-Twin firmware (DSP or MCU firmware) in these so-called VM III Twins.

It turns out that I do have a VM III Twin display firmware, but it's version 25.03 and it was extracted via JTAG. So presumably, it's older than what you have now, though I can't be certain.

So: back to the waiting game.

Now I'm bashing myself for getting something that new

I don't mind losing screen controls or this dual output functionality if I get battery connection reliability
But I don't think it's that easy 🙂

Thank you, I'll update if I get anything from the vendor
Or maybe someone else will beat me to it

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On 2023/01/02 at 11:15 PM, WallK said:

U1 is 56.09

We do have a 56.05 firmware, but it's for an Axpert MAX II 10 kW; that only supports two sizes: 10 kW 230V, and 5 kW 120V. So beware that there are at least two incompatible uses for the major version number 56.

More confusion! 🤷‍♀️😖

Edit: It would not be unheard of for the suppliers to get confused.

Edited by Coulomb
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1 hour ago, Coulomb said:

We do have a 56.05 firmware, but it's for an Axpert MAX II 10 kW; that only supports two sizes: 10 kW 230V, and 5 kW 120V. So beware that there are at least two incompatible uses for the major version number 56.

More confusion! 🤷‍♀️😖

Edit: It would not be unheard of for the suppliers to get confused.

I submitted video of the fault, photo of the cables to BMS, bloodwork and whatever else they requested
I only got "we have delays, will get to it in a week" in reply

Do you want that video for historical purposes?

Offtopic: is there any way to make it charge battery to, say, 95% SOC?

Edited by WallK
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16 hours ago, WallK said:

Offtopic: is there any way to make it charge battery to, say, 95% SOC?

From my memory of earlier years firmwares, that would be a fairly major patch. Not likely at this stage. I don't know of other ways. 

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On 2023/01/03 at 3:01 PM, Coulomb said:

Ah. That's pretty serious.

I'm starting to think that these (which do seem to be the same as the Axpert VM III Twin) have very little in common with Axpert VM III non-Twin. I'd call it a "VM 3½" or "VM V" etc.

So I've changed my mind: I don't believe that you can use VM III non-Twin firmware (DSP or MCU firmware) in these so-called VM III Twins.

It turns out that I do have a VM III Twin display firmware, but it's version 25.03 and it was extracted via JTAG. So presumably, it's older than what you have now, though I can't be certain.

So: back to the waiting game.

the comunication protocol of this inverter is the same of other older model? is the same of Axpert VM III non-Twin or other like pip4048?

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6 hours ago, Coulomb said:

If you mean the command set that it obeys, I believe it's similar to other Axpert VM IIIs.

Is there a post/tutorial anywhere on this forum that explains how to do this command communication with Axperts? I tried a few searches with different keywords, nothing turned up

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29 minutes ago, mafiose13 said:

Is there a post/tutorial anywhere on this forum that explains how to do this command communication with Axperts? I tried a few searches with different keywords, nothing turned up

Here's a protocol doc with all the available commands to read and write data
You can do it via serial (USB port or RS232 RJ45 connector)

HS_MS_MSX_RS232_Protocol_20140822_after_current_upgrade.pdf

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1 hour ago, WallK said:

Here's a protocol doc with all the available commands to read and write data
You can do it via serial (USB port or RS232 RJ45 connector)

HS_MS_MSX_RS232_Protocol_20140822_after_current_upgrade.pdf 184.64 kB · 0 downloads

Thank you. Do i need a software of some sort or just using the Command prompt on my pc , do you mind elaborating please? 

Edited by mafiose13
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