ELM327 - How to send three byte commands?

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sirfergy

Well-known member
Joined
Mar 30, 2011
Messages
115
I can successfully send commands to 79B, but when I try to send commands to 797 I always get what I assume is an error.

In my case, when I call AT SH 79B and AT FC SH 79B I can then send 21 01 and it goes to the correct group, but when I set AT SH 797 and AT FC SH 797 and I try sending 22 11 5D or 22 11 I get this response: 79A8037F2280.

What do I need to do to get it to correctly send the message?

Thanks!
 
Here is the full set of commands I'm sending:
Code:
AT AR
AT E0
AT SP 6
AT S0
AT H1
AT D1
AT SH 797
AT FC SH 797
AT FC SD 30 00 18
AT FC SM 1
03 22 11 5D -- doesn't work
22 11 5D -- doesn't work
22 11 -- doesn't work
 
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