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PROFIBUS-DP
D301171 - IO-Link master 1108
1-4
Use of Drop lines
Transmission rate/Cycle times
The transmission rate set by the PROFIBUS-DP master determines the system's transmission
speed. Depending on the gateway, the transmission speed can be adjusted in a range of 9,6
kbps up to 12 Mbps.
Transmission cables
The bus nodes are interconnected via fieldbus cables, which accord to RS485 specifications
and DIN19 245. The cables must thus have the following characteristics:
Note
The length of drop lines may not exceed 6.6 m at a transmission speed of 1.5 Mbps.
At a transmission speed of 12 Mbps it is not permitted to use drop lines.
Table 2:
Characteristics
of PROFIBUS-
DP transmission
cables
Parameters
Cable type A (DIN 19 245 part 3)
Wave resistance
135 to 165
Ω
(3 to 20 MHz)
Capacitance
< 30 pF/km
Loop resistance
< 110
Ω
/km
Conductor diameter
> 0.64 mm
Conductor cross section
> 0.34 mm
2
Terminating resistors
220
Ω
Attention
The higher the transmission rate, the higher the number of bus nodes and the longer
the transmission cables, the more important to observe these parameters.
Figure 1:
Schematic
PROFIBUS-DP
cables
Schirm
Rt
Abschluß-
widerstand
Teilnehmer 0
Teilnehmer 31
innenliegend:
verdrillte Zweidrahtleitung
Rt
Vp
Vp
GND
GND
Shield
inside:
Twisted cable pair
Rt
terminating
resistor
Station 0
Station 31
Rt
Vp
Vp
GND
GND
Содержание IO-LINK MASTER
Страница 1: ...IO LINK MASTER User Manual...
Страница 7: ...D301171 IO Link master 1108 iv...
Страница 65: ...Connection to a Siemens Step 7 usage of the TURCK example program D301171 IO Link master 1108 4 16...
Страница 75: ...Acyclic data exchange via PROFIBUS DP C2 master and TURCK IO Link DTM D301171 IO Link master 1108 5 10...
Страница 83: ...Guidelines for electrical installation D301171 IO Link master 1108 6 8...
Страница 85: ...Index D301171 IO Link master 1108 7 2...