
I-7550E PROFIBUS/Ethernet Converter User Manual
(Version 1.00, June/2014)
PAGE: 10
Figure 5 Ethernet connection
2.3.3 PROFIBUS Connection
The PROFIBUS interface of the I-7550E is a DB9 female connector. The
connector uses the standard PROFIBUS 9 pin assignment. It is recommended to
use a standard PROFIBUS cable and connector (DB9 male). As with every
serial bus the rate of safe data transmission in a PROFIBUS network decreases
with increasing distance between Master and Slave.
Table 5
shows the
transmission rate and range for a cable with the following properties:
1.
Impedance :135~165 Ω
2.
Capacity : lower than 30 pF/m
3.
Loop resistance : lower than 110 Ω/km
4.
Wire diameter : greater than 0.65 mm
5.
Core cross-section : greater than 0.34 mm
2
Table 5 Transmission rate decreasing with increasing transmission distance
Transmission Rate(kbps) Transmission Distance per Segment (meter)
9.6, 19.2, 45.45,93.75
1200
187.5
1000
500
400
1500
200
3000, 6000, 12000
100
Содержание I-7550E
Страница 91: ...I 7550E PROFIBUS Ethernet Converter User Manual Version 1 00 June 2014 PAGE 91 Figure 98 Device info...
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