Hello,

Does anyone know how I would go about sending a CAN message (atsp6) that is longer than 8 bytes??

I've tried turning auto formatting off with atcaf0 then writing my own PCI bytes for the multiline message.

I need to send the following CAN message (which is too long I know) with header 745:

08 3B 08 57 37 6E AE 31 E3

The way I understood you is that I need to send the following two commands: (this is with ATCAF0 and atsh745 beforehand)

745 10 08 3B 08 57 37 6E AE - first frame

the rest of the message is then:

745 21 31 E3 - second frame

I have inserted the PCI bytes myself (10 and 21). I've left the remaining 00 00 00 00 00 from the end of the second part as I understand the ELM inserts these.

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I think it may be that I am not responding to the flow control message sent FROM the vehicle.

I think the vehicle sends a flow control message which is:

765 30 03 14

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This is done under computer control so it should be fast enough.

Thanks for any help that can be given!!

chalky78 wrote on 04/30/10 at 08:56:14:


So it looks like you're trying to write to data block 08 on an Escape Hybrid Battery Controller? What do you get when you do a mode $3C read for data block $08?

Why do you think that the flow control would come from 765? Seems like it should come from $74D?