Страница 1 мировой engineering стандарты общая спецификация

temp_count_hi
This is a temporary storage variable for message $82. It is the upper byte of
temp_count.
$00 thru $FF
temp_count_lo
This is a temporary storage variable for message $82. It is the lower byte of
temp_count.
$00 thru $FF
total_num_local_dtcs
This static variable contains the total number of DTCs any particular node
supports. (Note that this number is specific to each node).
$0001 thru $FFFF
M
This is a temporary loop index variable that is used in the pseudo code for
searching through local DTC lists.
$0000 thru $FFFF
N
This is a temporary loop index variable that is used in the pseudo code for
searching through local DTC lists.
$0000 thru $FFFF
DTC_Index
This is an index variable used by the background loop for sending level $81
responses.
0 to total_num_local_dtcs
Level_81_Active
This is a flag which is used to keep track of whether a response to a level $81
request is in progress.
YES/NO
Request_Status_Mask
This variable is used to store the requested status mask to a level $81 request
and is used by the background function which transmits the responses.
$00 thru $FF
msg_sent
This is a local variable used to prevent the ECU from attempting to transmit two
messages in response to a level $81 request in the same pass of the
background loop.
YES/NO
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GM WORLDWIDE ENGINEERING STANDARDS
GMW3110
Variable/Meaning
Values
DTC_Info
This is an array of data structures used to house DTC specific information within
a node. The following elements comprise this structure:
1. DTCH = most significant byte of diagnostic trouble code.
2. DTCL = least significant byte of diagnostic trouble code.
3. DTCFT = failure type information associated with the DTC.
4. DTCSB = status information associated with the DTC (refer to Table E1:
DTC Status Bit Assignments for more details.)
To access information in this structure, the following nomenclature is used:
DTC_Info[x].element, where x =