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Firmware for communicating with EG4 LL v1

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(@bobkat)
Posts: 4
Active Member
Topic starter
 

what is the appropriate way to have new eg4 LL S communicate with eg4LL v1?

im trying to get 6 old ones and 6 new ones to work with a 12000xp

 
Posted : January 12, 2025 11:41 pm
(@mdbsolar)
Posts: 8
Active Member
 

I have the same configuration, you use the multipack firmware.  Also you need a special cable, connecting a standard cat5/6 cable between the LL-S and the V1's will cause the LL-S to trip its fault protection as it doesn't expect anything on pin's 1-6.  I took a normal cat5 cable, cut it open and cut 1-6 leaving just 7/8 intact and everything works from that point.

This post was modified 1 month ago by MDBSOLAR
 
Posted : January 15, 2025 12:16 pm
(@bobkat)
Posts: 4
Active Member
Topic starter
 

i modified a cat cable to only have  pins 7 and 8 now the breaker doesn't trip on the new batteries.  I have this cable connected from the 3rd EG4LL-S to the top EG4LL-V1 battery bank

I applied the EG4 Multipack communication firmware v1 to the 6 eg4 LL v1 bank, i applied the v2 to the eg4 LL S.  When I do the EG4 LL S firmware it doesn't communicate with my 12000xp. (currently set to lithium, 0 standard, firmware 0405)

the orange cat5 going from CAN on a EG4 LL S going to bat com on the inverter. 

 
Posted : January 19, 2025 4:34 pm
(@mdbsolar)
Posts: 8
Active Member
 

Check the battery communication setting on the LL-S.  Per EG4 doc (A BMS Setup Guide for EG4 Batteries and Inverters) Set your DIP switches to ID-64, power on the BMS through the battery’s LCD screen, and navigate to protocol settings. Select “CAN protocol setting” and then “P06-LUX.” 

Basically, reboot the battery BMS after setting the dip switch's to 64, then hold down the return button on the LCD for ~5 seconds to enter that menu.  Let me know if that works.

 
Posted : January 22, 2025 11:55 pm
(@bobkat)
Posts: 4
Active Member
Topic starter
 

I updated the 3 eg4 LL S to the mulitpack firmware version went from Z02T18 (factory version) to Z02T12
i changed each of the battery to use the P06-Lux protocol.

the inverter is set to lithium / 6.lux (also tested 0.standard )

the inverter runs and after the update without warnings but now the batteries are missing from the monitoring app, it still shows the percentage but the 3 battery stats are gone and the amp hours on the right are 0

i did a complete shut down of batteries and inverter, turned on the master battery then remaining batteries in order, then the inverter

image
 
Posted : January 25, 2025 5:54 am
Eric
 Eric
(@eric)
Posts: 67
Trusted Member
 

Do you have Cat5e cable or higher with pins 7 & 8 only?

Make sure the LL-S batteries are on top, meaning the LL-S battery is the master battery that is communicating with the inverter.
The Lithium type should be set to "0" on the inverter. 

Here is a document explaining how to get the LL-S and the LL V1 to communicate.

Installing-EG4-LL-S-w-other-batterirs.pdf

 
Posted : January 29, 2025 7:23 pm
(@tovesen)
Posts: 1
New Member
 

I have a similar issue now. Does anybody have the factory firmware laying around for the LL-S? I want to try to downgrade.

I managed to install the RS485, but the communications fails with the RS232 update. I think something goes horribly wrong in the software from the RS and CAN firmwares being out of sync possibly leading to having communication failure with the Inverter and Cerbo CX unit.

I am really in a time crunch to fix this, so this firmware update was definitely not worth it lol.

Is it correct that the factory firmware is the Z02T18 and new firmware is Z02T12? I though it was reverse.

 

Appreciate if anyone could drop the factory firmware, I'll update regardless once I downgrade. 

 
Posted : February 8, 2025 5:47 pm
Eric
 Eric
(@eric)
Posts: 67
Trusted Member
 

The Z02T18 is the most recent firmware for the LL-S. The Z02T12 firmware is used to communicate with other batteries such as the LL-V2, Lifepower4 V1, and the LL-V1. 

The Z02T18 firmware can be downloaded on our website. 

EG4® LL-S 48V 100AH Lithium Iron Phosphate Battery

 
Posted : February 11, 2025 8:49 pm
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