Mr-Sandman
Solar Enthusiast
- Joined
- Dec 28, 2021
- Messages
- 351
Concerning EG4 Rack mount battery communications.
@Will Prowse asked this question in a comment on his latest youtube video: "What is the benefit of having the packs communicate for you guys? Just curious what the utility is." That got me thinking, IF your inverter won't talk to the EG4 batteries "not a growatt", do the batteries talk to each other or is there any reason to even hook them together?
I noticed while messing with the addressing on my EG4 LL batteries if I set one to master ID 1, it appears to poll the other batteries. If none are set to ID 1, there doesn't appear to be any traffic on the battery communication ports. I didn't leave my battery set to ID 1 as I couldn't get my computer with BMS software to talk to the RS485 port on that battery while it had that ID set. I think this is because it is set to talk to Growatt inverters on that port when that ID is set?
@Will Prowse asked this question in a comment on his latest youtube video: "What is the benefit of having the packs communicate for you guys? Just curious what the utility is." That got me thinking, IF your inverter won't talk to the EG4 batteries "not a growatt", do the batteries talk to each other or is there any reason to even hook them together?
I noticed while messing with the addressing on my EG4 LL batteries if I set one to master ID 1, it appears to poll the other batteries. If none are set to ID 1, there doesn't appear to be any traffic on the battery communication ports. I didn't leave my battery set to ID 1 as I couldn't get my computer with BMS software to talk to the RS485 port on that battery while it had that ID set. I think this is because it is set to talk to Growatt inverters on that port when that ID is set?
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