FieldConnex® Basic Segment Coupler
Operation
2
016-
04
25
5
Operation
5.1
Getting Started
Connect PROFIBUS PA, PROFIBUS DP, 24 V power supply, and earth to the Segment
Coupler. If the Segment Coupler is physically the last device on the PROFIBUS DP segment
with the terminator activated, no further configuration is required.
1. All cables and wires are connected and the 24 V power supply is switched on.
Observe LED PWR:
• The LED PWR is switched on if the PROFIBUS PA voltage is between 24 V
…
26 V
• If the LED PWR is off, the device is defective.
2. The PROFIBUS PA master starts to scan connected field devices independently of wheth-
er the Segment Coupler is connected to a PROFIBUS DP master or not.
Observe LED PA:
• If field devices are found, the LED PA is switched off.
• If no field devices are detected, the LED PA starts to flash at 2 Hz.
3. The Segment Coupler is connected to a PROFIBUS DP master.
Observe LED DP:
• If the Segment Coupler detects PRFOFIBUS DP communication, the LED DP is
switched off.
• If no PROFIBUS DP communication is detected, the LED DP flashes at 2 Hz.
• If the Segment Coupler has a defect, the LED DP is lit up.
4. Configure your PROFIBUS PA devices in your system. Check that the GSD files of the
PROFIBUS PA devices in use contain the baud rate you intend to configure in your
PROFIBUS DP master. If this is not the case, run the Fuchs GSD converter pro-
gram.
LED Indicators on the Power Supply Module
LED
Status / Error
Remedy
LED is lit up
green:
PROFIBUS PA voltage is between
24 V
…
26 V
LED is off:
The device is not connected to the
power supply.
The device is defective.
Check the termination.
Check the cable connection.
Exchange the device or contact
Fuchs for repair.
LED is off:
(Provided that the Segment Coupler
is powered:)Field devices found.
LED flashes red
at 2 Hz:
No field devices detected.
Ensure that the device is connected
to a PROFIBUS DP master.
Ensure the field devices are
connected properly.
LED is off:
(Provided the device is connected to
a PROFIBUS DP master:)
PRFOFIBUS DP communication
detected.
LED flashes red
at 2 Hz:
No PROFIBUS DP communication
detected.
Ensure the device is properly
connected to the DP master.
Check the DP master.
LED is lit up red:
The device is defective.
Exchange the device or contact
Fuchs for repair.
PWR
PWR
PA
PA
DP
DP
DP
