Страница 1 мировой engineering стандарты общая спецификация

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GM WORLDWIDE ENGINEERING STANDARDS
GMW3110
response with response code $78 is only used with this service when it is possible that the ECU may not be
able to send any of the requested DPIDs within the P2
C 
timing window. The ECU is only allowed to transmit a

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single negative response with response code $78 to a periodic request for this service. Refer to the pseudo
code (Process_AA_Msgs function for more details).
Timing of additional UUDT responses is handled in the applications PDS logic.
8.19.1.3 Stopping Scheduled Periodic DPID(s) - Sub-Function Parameter ($00). 
If a node supports any of
the periodic levels of this service, then it shall also support the stopSending ($00) sub-function parameter. The
positive response to a stopSending DPID request is a single UUDT diagnostic message with a value of $00 in
the DPID/message number position and no additional data bytes.
When a stopSending request is received without any DPIDs after the sub-function parameter, the ECU shall
stop the periodic transmission of all DPIDs (stop the PDS) and the entire PDS shall be cleared (cleared = all
DPIDs removed from the PDS. Reference the pseudo-code for the required implementation). When a
stopSending request is received with one or more DPID(s) after the sub-function parameter, then all DPID(s) in
the PDS that match a DPID number in the request shall be stopped. The ECU shall be able to support in a
single stopSending DPID request, as many DPIDs as there are items in the PDS. Refer to parameter
PDS_Length in pseudo code.
Note: 
The ECU shall stop only the matching DPIDs. All other scheduled DPIDs shall remain unaffected. A
stopped DPID shall not be transmitted after the UUDT positive response with message number $00 has been
sent.