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PROFIBUS Communication Interface
3.2.5
Figure 24: PROFIBUS Adapter Communication interface
The following table describes the Signal Name and Description.
Table 24: Signal name and Description
No.
1.
2.
3.
4.
5.
6.
7.
8.
9.
All FieldBus devices which use a standard 9-pin Sub-D connector should provide the VP and
DGND signals on the bus connector in addition to receive and transmit signals. With all other
connector types, only receive and transmit signals need to be connected.
Make sure that the connector type used is suitable for the selected baud rate.
If optional signals are provided, they must also comply with EN50170 Volume 2 and they
must be correctly described in the respective GSD file.
GFK-2746B
PACSystems* RSTi PROFIBUS and PROFINET Network Adapter–August 2013
Name
Description
FG
-
RXD/TXD-P
Receive/Transmit data-plus (B wire)
Repeater control signal (direction control), RTS
CNTR-P
signal
DGND
Data ground (reference potential for VP)
VP
Supply voltage-Plus (P5V)
-
RXD/TXD-N
Receive/Transmit data-minus (A-wire)
CNTR-N
Repeater Control Signal (direction control)
Chapter 3. PROFIBUS Network Adapters
41
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