Description of the interfaces
CX9020
24
Version: 2.0
5.4.5
PROFIBUS (x310)
Pin 6 transfers 5 V
DC,
pin 5 transfers GND for the active termination resistor. These must never be used for
other functions, as this can lead to destruction of the device.
Pins 3 and 8 transfer the PROFIBUS signals. These must never be swapped over, as this will prevent
communication.
Fig. 16: PROFIBUS interface X310 with pin numbering.
The Profibus bus line is connected via a 9-pin D sub with the following pin assignment:
Table 15: PROFIBUS interface X310, pin assignment.
Pin
Assignment
1
Shielding
2
not used
3
RxD/TxD-P
4
not used
5
GND
6
+5 V
DC
7
not used
8
RxD/TxD-N
9
not used
Table 16: Wire colors of the PROFIBUS line.
PROFIBUS line
D sub
B red
Pin 3
A green
Pin 8
For the optional PROFIBUS interface (x310), documentation with further information is available for
download from the Beckhoff website:
https://www.beckhoff.de/german/download/epc.htm?id=71003127100362
Document name
CXxxx0-x310 optional Profibus interface.
Summary of Contents for CX9020
Page 1: ...Manual CX9020 Embedded PC 2 0 2019 04 09 Version Date ...
Page 2: ......