Страница 1 мировой engineering стандарты общая спецификация

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GM WORLDWIDE ENGINEERING STANDARDS
GMW3110

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8.19.6.3.1 Example #1 - Single DPID Schedule Rates. 
In this example, four DPIDs ($01, $02, $03, and $04)
are scheduled at the medium rate. At t = 0.0 ms, the tool begins sending the request to schedule the four
DPIDs at the medium rate. For the purposes of this example, the ECU receives the request and executes the
PDS code for the first time t = 25.0 ms. See Figure 34 and Table 206.
Tester
ECU
0 ms
25 ms
37.5 ms
225 ms
237.5 ms
Time ( t )
Actual
schedule
rate
Mode $AA
request
DPID #1
DPID #2
62.5 ms
50 ms
DPID #3
DPID #4
262.5 ms
250 ms
DPID #1
DPID #2
DPID #3
DPID #4
Figure 34: Example #1 - Four DPIDs at Medium Rate (200 ms) with 12.5 ms AA_Msg_Rate Rate
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GMW3110
Table 206: Example #1 - Four DPIDs at Medium Rate (200 ms) with 12.5 ms AA_Msg_Rate Rate
t (ms)
PDS
Xmit
Index
DPID
Sent
PDS
Loop #
PDS[0]
Transmit
Count
PDS[1]
Transmit
Count
PDS[2]
Transmit
Count
PDS[3]
Transmit
Count
25.0
0
1
1
0 to 16
0
0
0
37.5
1
2
2
15
0 to 16
0
0

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50.0
2
3
3
14
15
0 to 16
0
62.5
3
4
4
13
14
15
0 to 16
75.0
0
None
5
12
13
14
15
87.5
0
None
6
11
12
13
14
100.0
0
None
7
10
11
12
13
112.5
0
None
8
9
10
11
12
125.0
0
None
9
8
9
10
11
137.5
0
None
10
7
8
9
10
150.0
0
None
11
6
7
8
9
162.5
0
None
12
5
6
7
8
175.0
0
None
13
4
5
6
7
187.5
0
None
14
3
4
5
6
200.0
0
None
15
2
3
4
5
212.5
0
None
16
1
2
3
4
225.0
0
1
17
0 to 16
1
2
3
237.5
1
2
18
15
0 to 16
1
2
250.0
2
3
19
14
15
0 to 16
1
262.5
3
4
20
13
14
15
0 to 16
--``,,``````,``,,``,,,`,`,`,,-`-`,,`,,`,`,,`---
Page 232
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GMW3110
8.19.6.3.2 Example #2 - Mixed DPID Schedule Rates. 
In this example, three DPIDs ($01, $02, $03) are
scheduled at the fast rate and then another request is sent for a single DPID ($04) to be scheduled at the
medium rate. For the purposes of this example, the ECU receives the first mode $AA request and executes the
PDS code for the first time t = 25.0 ms. The second mode $AA request is received and processed just prior to
the device executing the Process_AA_Msgs() function at t = 50.0 ms. See Figure 35 and Table 207.
Tester
ECU
0 ms
25 ms
Time ( t )
Mode $AA request
fast rate
DPID #1

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37.5 ms
325 ms
337.5 ms
DPID #2
Mode $AA request
medium rate
50 ms
62.5 ms
DPID #4
DPID #3
300 ms
312.5 ms
375 ms
387.5 ms
350 ms
362.5 ms
412.5 ms
425 ms
400 ms
Medium
rate =
312.5 ms
Fast
rate =
37.5 ms
Fast
rate =
50 ms
Fast
rate =
37.5 ms
DPID #1
DPID #2
DPID #3
DPID #1
DPID #2
DPID #3
DPID #4
DPID #1
DPID #2
DPID #3
DPID #1
Figure 35: Example #2 - Mixture of DPID Schedule Rates
--``,,``````,``,,``,,,`,`,`,,-`-`,,`,,`,`,,`---
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Table 207: Example #2 - Three DPIDs at Fast Rate (25 ms) and 1 DPID at Medium Rate (300 ms)