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Bigpie wrote: ↑Fri Feb 18, 2022 8:02 pm I've got a second pack to play with. I've been able to get the contactors to close from the hybrid can thanks to some logs from DomT177Screenshot 2022-02-18 at 7.57.07 pm.png
This is the pinout of the external connector. To close the contactors 0x09C & 0x3A6 are needed on the hybrid can.
0x3A6 58 02 11 00 00 01 00 00 byte 1 (0 indexed) increaments to 0F and restarts, not yet sure if it cares about that. Byte 0 is always the same, so for 0x02 byte 0 will be 0x58.

https://github.com/DomT177/GolfGTE

Any news on this? I will probably soon receive a couple of GTE batteries for using with a PV hybrid inverter and was hoping to avoid having to drive the contactors with any external hardware.
Was the precharge relay also engaged when you tried this?
If no further info is available in this matter I will try to some variants of these 0x09C & 0x3A6 and see whats really needed to keep the contactors closed.

I didn't look any further in to it yet. Maybe some one Damien's recent discoveries on keeping the charger happy will be useful in keeping the BMS master happy

I am trying to figure out the 0x09C, I have found many counters on the capture "HybridCAN Key ON", and also something worth noticing..?


This is all of my notes:

Data Byte 0, I have no idea, random value, a checksum? total of 0x09C? a value? has allmost all values between 0x00-0xFF __ BUT NOT ALL !!

Data Byte 1, counter, mostly 0x20-0x2F, but 1-3 times the first value is 4, 6 or 8 (0x4? 0x6? 0x8?, ? part is allways counter 0-F)

Data Byte 2 is allways 0x5F

Data byte 3, is 0x05 constantly in the first 143frames of 0x09C, the changes to 0x04 for frames 144-220 and on frame 221 it is 0x05 again.
then continues as 0x04 except for these frames it is 0x05:
(228,281,290,297,303,308,310,322,342,360,364,379,385,392,407,445,454,456,459,492,498,526,550,556,565,573,583)
Could it be like 0x05 starting up / precharge, 0x04 then ready to drive, random heartbeat 0x05 ? ?

Data Byte 4 is allways 0x06

Data Byte 5, 0x00-0xFC (0x*0,0x*4,0x*8,0x*c only) ////checksum etc???

Data Byte 6, counter 0x10-0x1F (+1 when Databyte 5 goes from 0xF4 or 0xF8 or 0xFC to 0x00 or 0x04)

Data Byte 7 is allways 0x00

There, Hopefully someone smarter can do the rest

edit: still on it, Byte 0 has 2 identical values here, see the pattern?

5.739950 1 09C Rx d 8 C8 2A 5F 05 06 6C 13 00 <<< 2A 05 = C8
5.749940 1 09C Rx d 8 C8 2B 5F 04 06 74 13 00 <<< 2B 04 = C8
5.760000 1 09C Rx d 8 C7 2C 5F 04 06 7C 13 00 <<< 2C 04 = C7

Bigpie wrote: ↑Fri Feb 18, 2022 8:02 pm I've got a second pack to play with. I've been able to get the contactors to close from the hybrid can thanks to some logs from DomT177Screenshot 2022-02-18 at 7.57.07 pm.png
This is the pinout of the external connector. To close the contactors 0x09C & 0x3A6 are needed on the hybrid can.
0x3A6 58 02 11 00 00 01 00 00 byte 1 (0 indexed) increaments to 0F and restarts, not yet sure if it cares about that. Byte 0 is always the same, so for 0x02 byte 0 will be 0x58.

https://github.com/DomT177/GolfGTE

Is this the same thing with the 0x09C Byte 0 ? I dont understand this

Anyone seen a BMS board reporting seemingly wrong voltages? Using a multimeter they all measure ~3.8v

moonshine wrote: ↑Fri Feb 17, 2023 12:07 pm Any news on this? I will probably soon receive a couple of GTE batteries for using with a PV hybrid inverter and was hoping to avoid having to drive the contactors with any external hardware.
Was the precharge relay also engaged when you tried this?
If no further info is available in this matter I will try to some variants of these 0x09C & 0x3A6 and see whats really needed to keep the contactors closed.

I figured this out, from the internal can bus at least viewtopic.php?t=3560

does anyone have the internal battery loom intact to check some wiring for me? I want to put the BMS master back in to the equation now and see if I can get it to close the contactors from the external hybrid can bus.

I have an opened battery pack that still has the modules in it etc. I only cut out the contactor 12V and GND cables from the loom.
Looks like this:
I also have unopened pack. And a connector for the external CAN bus

What would you want checked?

I figured out what I was looking for thanks