My issue is that this proto circuit connects to SPR1(CANH). I presume this is just to break it out to the DB37 but again - not sure and I haven't traced that wire in the loom yet. I also haven't checked to see where it comes from on the board so I could look at that in the config. (yet)
Note that JS6 and JS8 have nothing connected to them.
Am I right in assuming that SPR1 and SPR2 (CANH/CANL) are only named that way for convenience, and that unless connected to JS6/8 they have no special use at all except as a path to the DB37 pins 3 and 4?
Given SPR1 is used, and JS6/8 are not used at all, could I simply take JS6 and 8 to a new 2 pin connector and use that as my CAN bus connector? (and leave SPR1 doing whatever it's doing right now?)
This all seems reasonable to me but I have read the docs and thought I would make sure. I have found in the MSGPIO docs this description...
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On MS-II™ controllers, the CANbus circuits are:
CANH: CPU pin PM0 (#45) → 40-pin socket pin 6 → JS6 jumper to SPR1/CANH → DB37 pin 3,
CANL: CPU pin PM1 (#44) → 40-pin socket pin 11 → JS8 jumper to SPR2/CANL → DB37 pin 4.
Cheers - Neil "Got the soldering iron on standby waiting for confirmation" Gardner