Transmission Times; A.2 Transmission Times - Siemens SIMATIC CP 440 Manual

A.2

Transmission Times

Transmission Times
The tables below indicate the transmission times required depending on the
transmission protocol selected.
Two S7-400s each with a CPU 416 (6ES7 416-2XK02-0AB0) and a CP 440 were
used to measure the times. A SEND_440 FB was programmed in the user
program of the active CPU, and a RECV_440 FB was programmed in the user
program of the passive CPU. The time that elapsed between the initiation and
completion of the job was measured.
ASCII Driver
Transmission times with the ASCII driver:
Table A-3 Transmission Times with the ASCII Driver in ms
115200
Baud rate
(bps)
User data
1 byte 1.5
10 bytes 2
20 bytes 4
50 bytes 6
100 bytes 12
200 bytes 22
Point-to-point connection CP 440 Installation and Parameter Assignment
A5E00057742-02
76800 57600 38400 19200
2 2 2 3
2 3 5 8
5 6 8 14
9 12 17 32
17 22 32 61
32 41 59 117
Technical Specifications
9600 4800 2400 1200
4 8 15 29
14 28 56 111
26 52 102 202
60 120 240 478
118 236 470 936
230 460 920 1835
600 300
55 110
220 440
404 807
952 1906
1872 3740
3668 7330
A-5