Trouble decoding battery block voltages over CAN

I've hit a wall with soliciting the battery block voltages and resistances. Not sure if I'm sending the correct command or I'm missing something but this is the issue.

I can send 7e3 2 21 cf and I get the correct reply of 7eb 10 12 61 cf.....

I *think* I need to send the command of 7e3 30 7..... and then I should get back 7eb 21...., 7eb 22...., 7eb 23.... and 7eb 24.... There are two problems I can't get my brain to understand.

1. When I send 7e3 30 7, I get two replies of 7e3 04 30 81 00 06 55 55 55 and then I get 7eb 02 70 81 00 00 00 00 00. This is not what I was expecting.

2. Regarding the response, do the block voltages, block resistances and other battery information fall under byte D0 (21) or is the information a sequential response from 7e3 2 21 d0/cf/ce? In other words, even if byte D0 is 21, can it be different information? (if that makes sense)

 

I think I tried that last night and had no luck. During the day I'm going to write the code for a sequential response, which I believe it is. On my way home from work today I'll try it out and let you know if it works.

 

Yup, the 30 did it, thanks.

 

I have one issue that I need to resolve. Maybe someone else has had this issue too. All of the battery block voltages work correctly but on occasion (once every 3-4 seconds) the block voltages for 8, 9 and 10 will show -327 and then on the next update go back to normal. Anyone else ever seen this issue?

 

It's probably in my code somewhere........