在CPU318上连接CP341模板，不同协议方式下所能实现的传输速率是多少？
What are the transfer times with CP341 in combination with a 318 CPU?
ANSWER:
The following tables list measured transfer times in relation to transfer protocols. An S7-300 with a CPU318 (6ES7 318-2AJ00-AB0, firmware version V3.0) and a CP341 (firmware version V1.0.2) were used for the time measurements. A function block FB 'P_SND_RK' has been programmed (exclusively) in the user program of the CPU. The time measured is that between the triggering and finishing of a job. The communication partners required for protocols 3964(R) and RK512 were simulated to ensure fastest possible response times.
|
|
Baud rate (bit) | ||||||||||
|
76800 |
57600 |
38400 |
19200 |
9600 |
4800 |
2400 |
1200 |
600 |
300 | ||
|
[msec] |
[sec] | ||||||||||
|
User data |
1 byte |
3.7 |
3.7 |
3.7 |
3.7 |
5 |
0.01 |
0.018 |
0.035 |
0.069 |
0.137 |
|
10 bytes |
5 |
5.5 |
6.2 |
8.9 |
15.8 |
0.03 |
0.059 |
0.117 |
0.234 |
0.468 | |
|
20 bytes |
6.5 |
7.4 |
9.3 |
14.7 |
27.1 |
0.053 |
0.105 |
0.209 |
0.418 |
0.836 | |
|
50 bytes |
11.9 |
14.2 |
18.9 |
33 |
61.7 |
0.122 |
0.243 |
0.485 |
0.969 |
1.939 | |
|
100 bytes |
21.2 |
25.9 |
35.4 |
63.8 |
120.8 |
0.237 |
0.473 |
0.944 |
1.888 |
3.777 | |
|
200 bytes |
39.1 |
48.2 |
67.4 |
124.6 |
239.3 |
0.468 |
0.932 |
1.863 |
3.727 |
7.453 | |
|
500 bytes |
91.6 |
115.6 |
163.5 |
306.8 |
593.6 |
1.167 |
2.314 |
4.622 |
9.241 |
18.483 | |
|
1000 bytes |
181 |
229 |
324.8 |
611.8 |
1185.8 |
2.334 |
4.63 |
9.221 |
18.433 |
36.866 | |
Table 1: Transfer times with ASCII driver (standard with minimum character delay time in each case):
|
|
Baud rate (bit) | ||||||||||
|
76800 |
57600 |
38400 |
19200 |
9600 |
4800 |
2400 |
1200 |
600 |
300 | ||
|
[msec] |
[sec] | ||||||||||
|
User data |
1 byte |
5.2 |
5.6 |
6.3 |
10.4 |
15.1 |
0.021 |
0.037 |
0.071 |
0.139 |
0.273 |
|
10 bytes |
6.7 |
10.1 |
10.3 |
19.7 |
30.1 |
0.042 |
0.08 |
0.154 |
0.305 |
0.607 | |
|
20 bytes |
10.4 |
10.5 |
20 |
20.3 |
40.2 |
0.066 |
0.125 |
0.246 |
0.488 |
0.973 | |
|
50 bytes |
20.1 |
20.1 |
29.8 |
40.2 |
70.9 |
0.137 |
0.265 |
0.524 |
1.04 |
2.076 | |
|
100 bytes |
30 |
30 |
40.2 |
70.2 |
130.4 |
0.254 |
0.497 |
0.985 |
1.963 |
3.917 | |
|
200 bytes |
50.2 |
59.3 |
76.6 |
130.8 |
250.6 |
0.486 |
0.959 |
1.908 |
3.802 |
7.596 | |
|
500 bytes |
100.3 |
120.5 |
170.4 |
320.5 |
606.4 |
1.186 |
2.348 |
4.674 |
9.33 |
18.637 | |
|
1000 bytes |
189.9 |
235.7 |
323.5 |
622 |
1198.3 |
2.356 |
4.664 |
9.288 |
18.538 |
37.035 | |
Table 2: Transfer times with procedure 3964(R) (standard with BCC)
|
|
Baud rate (bit) | ||||||||||
|
76800 |
57600 |
38400 |
19200 |
9600 |
4800 |
2400 |
1200 |
600 |
300 | ||
|
[msec] |
[sec] | ||||||||||
|
User data |
1 byte |
11 |
14.6 |
20.3 |
29.6 |
40 |
0.07 |
0.133 |
0.265 |
0.525 |
1.05 |
|
10 bytes |
12.5 |
20 |
20.3 |
30.3 |
50.1 |
0.09 |
0.17 |
0.336 |
0.672 |
1.344 | |
|
20 bytes |
19.8 |
20 |
21.1 |
40.1 |
60.2 |
0.111 |
0.216 |
0.428 |
0.856 |
1.711 | |
|
50 bytes |
20.4 |
30.1 |
30.7 |
55.4 |
100.1 |
0.182 |
0.354 |
0.704 |
1.407 |
2.812 | |
|
100 bytes |
30.2 |
39.8 |
50.3 |
90.3 |
160.2 |
0.3 |
0.587 |
1.164 |
2.328 |
4.651 | |
|
200 bytes |
60.2 |
70 |
90.6 |
170.5 |
300.9 |
0.583 |
1.147 |
2.275 |
4.544 |
9.085 | |
|
500 bytes |
139.9 |
170.4 |
221 |
381 |
712.8 |
1.388 |
2.731 |
5.422 |
10.822 |
21.625 | |
|
1000 bytes |
280.4 |
350.9 |
431.6 |
752.2 |
1422.3 |
2.761 |
5.43 |
10.804 |
21.548 |
43.029 | |
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