Interpreters Document


(Op-Codes $B0, $B2, $B3 and $B4)



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dps Interpreters

(Op-Codes $B0, $B2, $B3 and $B4). 
This Op-
Code may be used multiple times to turn on and turn off the “time delay”. 
NOTE
: GM NAO assembly plants will currently not support this Op-Code for the Class 2 protocol. If this Op-
Code is encountered in the assembly plant util
ity file, the G1 “Go To” will be processed.
Action Fields: 
AC0: 01 
– 0F: Time delay (x100 ms) between response and next request
00, 10-FF: No Time Delay 
– Reset any previously set “time delay”. 
AC1: 00 - Not Used
AC2: 00 - Not Used
AC3: 00 - Not Used
Pseudo Code: 
XX 84 AC0 AC1 AC2 AC3 G0-G1 G2-G3 G4-G5 G6-G7 G8-G9 
If AC0 is $00 or in the range $10-$FF 
Turn OFF any previously set “delay timer” 
If AC0 is in the range $01-$0F
Turn ON the “delay timer” based on a delay time of AC0 * 100ms 
(Time delay between an ECU response and any subsequent TESTER request)
Endif 
Goto step specified by goto field one (G1) 
Typical Interpreter Line: (all Action and Goto fields are hex numbers) 
Step 
Op-Code 
Action Fields
Goto Fields 
01 
84 
03 00 00 00 
00 02 00 00 00 00 00 00 00 00 
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Page
92 
A0 Op-Code: Request High Speed Communications - Mode A0
 
Supported By: 
Class 2 Interpreter 1
 
 
Description:
The A0 Op-Code builds a standard mode A0 message to request high speed communications. This Op-Code 
will not actually begin high speed communications it will only request the control module to be ready for high 
speed communications. To begin high speed communications an A1 Op-Code should be used.
This Op-
Code will ignore the error of “no response” being received from the request. If this condition occurs, 
then Goto Step G1 will be executed.
Action Fields: 
AC0: 
Target Device ID
AC1: 
00 - Not Used
AC2: 
00 - Not Used
AC3: 
00 - Look at response byte 5 for response value 
01 - Look at response byte 4 for response value 

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