Detroit Diesel DDEC VI Application And Installation page 406

COMMUNICATION PROTOCOLS
ACK/NACK – Acknowledge / Negative Acknowledge
Transmission Rate:
Data Length:
Data Page:
PDU format:
PDU specific:
Default priority:
PGN:
Byte: 1
Byte: 2
Bytes: 3–5
Byte: 6–8
AMB – Ambient Conditions
Transmission Rate:
Data Length:
Data Page:
PDU format:
PDU specific:
Default priority:
PGN:
Barometric Pressure (SPN 108)
Byte: 1
Resolution:
Byte: 2 Cab Interior Temperature - N/A
Bytes: 4,5 Ambient Air Temperature (SPN 171)
Resolution:
Byte: 6 Air Inlet Temperature (SPN 172)
Resolution:
Bytes: 7,8 Road Surface Temperature - N/A
6-30
As Needed
8 bytes
0
232
Destination Address
6
59,392 (0x00E800)
Control Byte
0: Positive Acknowledgment (ACK)
1: Negative Acknowledgment (NACK)
2: Access Denied (PGN supported but access denied)
Group Function Value (if applicable)- N/A
Reserved for assignment by SAE, send each of these
bytes as "FF"
Parameter Group Number of requested information
1 sec
8 bytes
0
254
245
6
65,269 (0x00FEF5)
0.5 kPa / Bit, 0 kPa offset
0.03125°C / Bit, -273°C offset
1°C / Bit, -40°C offset
7SA827 0701 Copyright © 2007 DETROIT DIESEL CORPORATION
All information subject to change without notice. (Rev. 01/07)