Interpreters Document

Action Fields: 
AC0: Module ID for file to download
AC1: $00 - Not used
AC2: $00 - Not used
AC3: Exceptions: 
$00 - Use utility file header address and keep address constant for entire calibration transfer (4 
bytes) 
$01 - Use global address and keep address constant for entire calibration transfer (4 bytes) 
$02 - Do not include any address information in the Service Request 
$03 - Do not include any address information in the Service Request. Include data packet checksum 
byte and data packet length byte in front of the data packet bytes. Data packet checksum is a 
simple 8 bit sum series of all data packet bytes. The data packet length byte represents the 
number of data packet bytes. 
$80 - Use utility file header address and increment packet address by number of bytes transferred (4 
bytes) 
$81 - Use global address and increment packet address by number of bytes transferred (4 bytes) 
$40 - Send a RequestDownload request before and a RequestTransferExit request after each 
TransferData request, use utility file header address in TransferData and keep address 
constant for entire calibration transfer (4 bytes) 
$41 - Send a RequestDownload request before and a RequestTransferExit request after each 
TransferData request, use global address in TransferData and keep address constant for 
entire calibration transfer (4 bytes) 
$42 
– Send a RequestDownload request before and a RequestTransferExit request after each 
TransferData request, do not include any address information in the TransferData Service 
Request 
$43 - Send a RequestDownload request before and a RequestTransferExit request after each 
TransferData request do not include any address information in the TransferData Service 
Request. Include data packet checksum byte and data packet length byte in front of the data 
packet bytes. Data packet checksum is a simple 8 bit sum series of all data packet bytes. The 
data packet length byte represents the number of data packet bytes. 
$C0 - Send a RequestDownload request before and a RequestTransferExit request after each 
TransferData request, use utility file header address in TransferData and increment packet 
address by number of bytes transferred (4 bytes) 
$C1 - Send a RequestDownload request before and a RequestTransferExit request after each 
TransferData request, use global address in TransferData and increment packet address by 
number of bytes transferred (4 bytes) 
4 byte naming convention = High, MidHigh, MidLow, Low
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Page
149 
(continued)
Pseudo Code: 
XX 93 AC0 AC1 AC2 AC3 G0-G1 G2-G3 G4-G5 G6-G7 G8-G9 
Use KWP2000 Normal Response processing
Build Transfer Data Request as indicated below