Table A- 10 Transmission Times For The Ascii Driver - Siemens Simatic S7-300 CP 341 User Manual

Technical Specifications
A.2 Transmission Rates
A.2 Transmission Rates
Transmission Rates
The tables below indicate the transmission times required depending on the transmission
protocol selected.
Two S7-300 stations, each with a CPU 315-2DP (6ES7315-2AF01-0AB0) and a CP 341
were used to measure the times. An P_SND_RK function block was programmed in the user
program of the active CPU, and an P_RCV_RK function block was programmed in the user
program of the passive CPU. The time that elapsed between the initiation and completion of
the request was measured.
ASCII driver
Table A- 10 Transmission times for the ASCII driver
User data
76800
1 bytes 0.010 s
10 bytes 0.010s
20 bytes 0.011 s
50 bytes 0.020 s
100 bytes 0.035s
200 bytes 0.060 s
500 bytes 0.145 s
1000 bytes 0.261 s
3964(R) procedure
Table A- 11 Transmission times with the 3964(R) procedure
User data
76800
1 bytes 0.010 s
10 bytes 0.011 s
20 bytes 0.021 s
50 bytes 0.027 s
100 bytes 0.041s
200 bytes 0.060 s
500 bytes 0.129 s
1000 bytes 0.251 s
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www.gkbpx.com
57600 38400 19200
0.010 s 0.010 s 0.010 s
0.010 s 0.010 s 0.020 s
0.013 s 0.020 s 0.020 s
0.026 s 0.030 s 0.040 s
0.043 s 0.050 s 0.090 s
0.082 s 0.100 s 0.160 s
0.191 s 0.206 s 0.357 s
0.335 s 0.402 s 0.692 s
57600 38400 19200
0.010 s 0.011 s 0.020 s
0.016 s 0.020 s 0.020 s
0.021 s 0.021 s 0.031 s
0.029 s 0.030 s 0.050 s
0.046 s 0.051 s 0.081 s
0.077 s 0.090 s 0.151 s
0.175 s 0.202 s 0.351 s
0.297 s 0.342 s 0.681 s
CP 341 Point-to-Point Communication, Installation and Parameter Assignment
Baud rate (bd)
9600 4800 2400
0.010 s 0.010 s 0.020 s
0.020 s 0.031 s 0.062 s
0.030 s 0.055 s 0.110 s
0.080 s 0.140 s 0.251 s
0.150 s 0.258 s 0.491 s
0.271 s 0.501 s 1.000 s
0.651 s 1.213 s 2.400 s
1.263 s 2.400 s 4.800 s
Baud rate (bd)
9600 4800 2400
0.020 s 0.027 s 0.042 s
0.030 s 0.050 s 0.083 s
0.040 s 0.071 s 0.129 s
0.080 s 0.142 s 0.272 s
0.145 s 0.262 s 0.506 s
0.272 s 0.500 s 1.000 s
0.642 s 1.220 s 2.400 s
1.260 s 2.415 s 4.800 s
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1200 600 300
0.039 s 0.077 s 0.154 s
0.131 s 0.251 s 0.492 s
0.220 s 0.431 s 0.853 s
0.492 s 1.000 s 2.000 s
0.952 s 2.000 s 4.000 s
2.000 s 4.000 s 8.000 s
4.800 s 9.600 s 18.800 s
10.600 s 21.200 s 37.600 s
1200 600 300
0.076 s 0.139 s 0.271 s
0.158 s 0.305 s 0.600 s
0.251 s 0.490 s 0.969 s
0.528 s 1.000 s 2.000 s
0.993 s 2.100 s 4.000 s
2.000 s 4.200 s 8.000 s
4.800 s 9.600 s 18.800 s
10.600 s 21.200 s 37.600 s
Manual, 09/2008, A5E02191071-01