Doutb in the connection of daisy chain between BMSCCTX and BMSCC

[Amal_V]

Hi Team,
i am working in the daisy chaining bmscctx and bmscc using a Pi MCU. I was able to get the values using only bmscctx.
now i am having issue when i connect the bmscc also.
the problem i find is in the user manual3185, the figure for daisy chain is given as:

and it says to connect ISO Hp to ISO Lm of the next node (that is opposite polarity).
but when i looked in the L9963E datasheet, it is given as :

Here ISO HP is connected to ISO LP (that is same polarity)

so my doutb is which among the above should i follow. And due to this i think my values after daisy chain is not displayed.

My second node is not assigning as my daisy chain is not configured correctly.( i am using mcu as pi btw)

Thank You.

 

 

[SRomeo]

Hi Amal,

The connections depicted in the diagrams you shared are the same.
Connect ISOH with ISOL of the corresponding polarity, so

ISOHp with ISOLp

ISOHm with ISOLm

 

BMSCC connectors kit is, in fact, guided. In the package you should find something similar:

If you prepare connectors by mean of it, connection mistakes are avoided.
For clarity, let me share a clearer connection scheme, with the second connector rotated by 180degrees:

Best Regards
Simone
AEK_Team

 

[Amal_V]

Thank you for clarifying the doutb.

But still in the UM3185, the connection given in writing is reversed so i think it should be a mistake right

 

[SRomeo]

You are right Amal, there is an errata in the description.
We'll fix on the next UM revision

Best regards,
Simone