Страница 1 мировой engineering стандарты общая спецификация

RBD
80 thru
8F
ReservedByDocument
These values are not allowed because the DPID number occupies the message
number position in a UUDT message and the $A9 service also uses the
message number position in a UUDT message to provide an echo of the
sub-function parameter. The range of message numbers from $80 thru $8F are
reserved for DTC responses.
M
RBD
01 thru
7F,
90 thru
FE
DPID
DPIDs can be either static or dynamically definable. Dynamically definable
DPIDs (see service $2C for more detail) shall start with DPID number $FE and
be numbered sequentially backwards. Static DPIDs (DPIDs whose
signal/parameter content is determined at the time of ECU software compilation)
shall start with DPID number $01 and be numbered sequentially forwards.
M
DPID
FF
ReservedByDocument
M
RBD

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25.06.2020
WORLDWIDE ENGINEERING STANDARDS General Motors Local Area Network Enhanced Diagnostic Test Mode Specification
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February 2010
Page 215 of 336
This value is reserved for future definition.
8.19.3 Positive Response Message Definition. 
Positive responses to this service are UUDT message(s).
The first byte of a UUDT diagnostic message contains a message number. For this service, the DPID#
occupies the message number field. The number of data bytes after the message number depends on the sub-
function parameter value or the DPID requested. If sub-function parameter ($Level) $00 is requested, then the
response message contains only the message number (DPID $00) and no additional data as illustrated by
Table 193.
Table 193: ReadDataByPacketIdentifier, $Level = $00 Positive Response Message