Electrical installation
Communication
Connection of PROFIBUS
31
GHB 13.0001−EN EN 3.0
5.7.3
Connection of PROFIBUS
Assignment of Sub−D socket
The controller is connected to the PROFIBUS via the 9−pin Sub−D socket X4.1/X4.2.
View
Pin
Designation
Explanation
1
6
5
9
1
−
−
2
−
−
3
RxD/TxD−P
Data line B (received/transmitted data plus)
4
RTS
Request to send
(received/transmitted data, no differential signal)
5
M5V2
Data reference potential (ground to 5V)
6
P5V2
5 V DC / 30 mA (bus termination)
7
−
−
8
RxD/TxD−N
Data line A (received/transmitted data minus)
9
−
−
5.7.4
Connection of RS232 serial interface to X1
The serial interface is designed as a 9−pole Sub−D−plug. The signal levels comply with the
RS232 specification.
X1 RS232
Pin No. Designation
Value
1
n. c.
Not assigned
2
R x D
0 V / 10 V
3
T x D
0 V / 10 V
4
n. c.
Not assigned
5
GND
6
n. c.
Not assigned
7
8
9
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