34
Manual – Controllers DHE/DHF/DHR21B (standard) and DHE/DHF/DHR41B (advanced)
4
Installing the DHF21B/41B option
Assembly and Installation Notes
The PROFIBUS interface sends a TTL control signal for a repeater or fiber optic adapter
(reference = pin 9) via pin 4 (CNTR-P).
Baud rates greater
than 1.5 MBaud
Operating the DHF21B/41B option with baud rates > 1.5 MBaud is only possible with
special 12 MBaud PROFIBUS connectors.
Bus termination
You need not equip the DHF21B/41B option with bus terminating resistors. This means
the PROFIBUS system can be put into operation more easily and the number of error
sources during installation is reduced.
When the DHF21B/41B option is located at the start or end of a PROFIBUS segment
and when there is only one PROFIBUS cable connected to the DHF21B/41B option, you
must use a plug with an integrated bus terminating resistor.
Switch on the bus terminating resistors for this PROFIBUS connector.
Setting the station
address
To set the PROFIBUS station address, use DIP switches 2
0
– 2
6
on the DHF21B/41B
option.
The DHF21B/41B option supports address range 0 – 125.
Any change made to the PROFIBUS station address during ongoing operation does not
take effect immediately. You have to switch the compact controller or the inverter in
which DHF21B/41B option is installed on and off again for the changes to take effect
(power +24 V off/on).
4.8.3
LEDs in PROFIBUS mode
LED L17
(PROFIBUS fault)
LED
L17 (PROFIBUS fault
) indicates that communication via the PROFIBUS interface
is working properly.
2103383051
The default setting for the station address is 4:
2
0
→
Significance: 1 × 0 = 0
2
1
→
Significance: 2 × 0 = 0
2
2
→
Significance: 4 × 1 = 4
2
3
→
Significance: 8 × 0 = 0
2
4
→
Significance: 16 × 0 = 0
2
5
→
Significance: 32 × 0 = 0
2
6
→
Significance: 64 × 0 = 0
DHF41B
2
2
2
2
0
1
2
3
2
2
2
4
5
6
27
ON
State of the
L17 LED
Diagnostics
Remedy
Off
•
The DHF21B/41B option exchanges data
with the PROFIBUS-DP master (data
exchange state).
-
Red
•
Connection to the DP master has failed.
•
The DHF21B/41B option does not detect
the PROFIBUS baud rate.
•
Bus interruption.
•
PROFIBUS-DP master not in operation.
•
Check the PROFIBUS connection of
the unit.
•
Check project planning of the
PROFIBUS DP master.
•
Check all the cables in the
PROFIBUS network.
Flashing red
(1 Hz)
•
The DHF21B/41B option does not detect
the baud rate. However, the DP master
does not address the DHF21B/41B option.
•
The DHF21B/41B option was either not
configured in the DP master or it was
configured incorrectly.
•
Check and correct the PROFIBUS
station address set in the DHF21B/
41B option and in the configuration
software of the DP master.
•
Check and correct the configuration
of the DP master.
•
Use the GSD file
SEW_6007.GSD
with the designation
MOVI-PLC
for
configuration.
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