Страница 1 мировой engineering стандарты общая спецификация

RequestCorrectlyReceived-ResponsePending
See 7.2 Return Code Definition.
C
RCR-RP
E3
DeviceControlLimitsExceeded
This code shall be returned any time a device exits device control due to its
internal protection algorithms. With this code, 2 additional bytes will be included
in the reject message to indicate which limit was exceeded.
C
DCLE
--``,,``````,``,,``,,,`,`,`,,-`-`,,`,,`,`,,`---
Page 241
GM WORLDWIDE ENGINEERING STANDARDS
GMW3110
8.20.5 Message Flow Example DeviceControl. 
The example in this section will show how a tool could send
device control messages to a Powertrain Control Module (PCM) to control two of its outputs.
8.20.5.1 DeviceControl Example Data. 
The output control mapping is based on the CPID control byte
definitions in Tables 213 and 214, and the brief descriptions that follow:
Table 213: Example Data PCM CPID $01 Definition
Control
Byte #
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
1
2
IAC
0 = POS; 1 = rpm
IAC Control
Enable
3
4

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5
IAC Pintle Position (n = counts) or
Desired Engine rpm (rpm = n × 12.5)
Based on the above definition, CPID $01 contains 5 bytes of control data. CPID $01 allows the tool to take
control of the Idle Air Control (IAC) motor by placing a 1 in bit 0 of byte 2, and then command a pintle position
or desired engine idle speed (based on the value of byte 2 bit 1) by placing the appropriate value in byte 5. The
unused bits/bytes are ignored for the purposes of the examples in this section.