Profibus Interface (X001); Fig. 9 Profibus, Pin Assignment D-Sub - Beckhoff EK3100 Documentation

LED
If the power supply unit is connected correctly and the power supply is switched on, the two upper LEDs in
the terminal prism are green. The left-hand LED (Us) indicates the supply for the Bus Coupler electronics.
The right-hand LED (Up) indicates the supply for the power contacts. The other LEDs indicate the state of
the E-bus. The detailed meanings of the LED displays are described in the chapter LED displays.
PE power contacts
Power contact PE
The PE power contact must not be used for other potentials.
3.3.2

PROFIBUS interface (X001)

PROFIBUS, 9-pin D-sub
Pin 6 transfers 5 V pin 5 transfers GND for the active termination resistor. These must never be used for
DC,
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. 9: PROFIBUS, Pin assignment D-Sub
The Profibus bus line is connected via a 9-pin D sub with the following pin assignment:
Pin
1
2
3
4
5
6
7
8
9
cable colors
PROFIBUS line
B red
A green
EK3100
NOTE
Assignment
Shielding
not used
RxD/TxD-P
not used
GND
+5 V
DC
not used
RxD/TxD-N
not used
D sub
Pin 3
Pin 8
Version: 1.5
Mounting and wiring
17