XPS-E
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6 Connector Assignment and Cabling
6.1 PROFIBUS
Connector Assignment
The PROFIBUS connection is executed according to EN50170 as 9-
pin female D-SUB with the following assignment:
Pin
RS422
Ref.
Signal
Function
Direction
1
-
-
Shielding
-
2
-
-
NC
-
3
B/B´
RxD/TxD-P
Data (+)
I/O
4
-
CNTR-P
Control character (+)
O
5
C/C´
DGND
Data Ground
-
6
-
VP
Supply for Terminator (+5V)
-
7
-
-
NC
-
8
A/A´
RxD/TxD-N
Data (-)
I/O
9
-
CNTR-N
Control character l (-)
O
Table 13:
Connector Assignment PROFIBUS
O = Output I= Input
PROFIBUS Terminating Resistor
For correct operation of XPS-E both bus terminations of the line
segment must be provided with a terminator. This terminator must
match with the impedance level of the line. Typically, in case of new
PROFIBUS installations, Type A will be used. The assignment of the
individual terminating resistors of the terminator is depicted in the
following figure.
Illustration 9:
Assignment of PROFIBUS Terminator Type A
Connector Assignment and Cabling