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Proline Promass I 300 PROFIBUS DP
Endress+Hauser
7.5
Hardware settings
7.5.1
Setting the device address
The address must always be configured for a PROFIBUS DP/PA device. The valid address
range is between 1 and 126. In a PROFIBUS DP/PA network, each address can only be
assigned once. If an address is not configured correctly, the device is not recognized by the
master. All measuring devices are delivered from the factory with the device address 126
and with the software addressing method.
Hardware addressing
1.
Set the desired device address using the DIP switches in the connection compartment.
2.
To switch addressing from software addressing to hardware addressing: set the DIP
switch to On.
The change of device address takes effect after 10 seconds. The device is
restarted.
Software addressing
‣
To switch addressing from hardware addressing to software addressing: set DIP switch
No. 4 to Off.
The device address configured in the Device address parameter (→ 94) takes
effect after 10 seconds. The device is restarted.
7.5.2
Enabling the terminating resistor
To avoid incorrect communication transmission caused by impedance mismatch, terminate
the PROFIBUS DP cable correctly at the start and end of the bus segment.
Electrical connection
not used
1
128
2
64
3
32
4
16
5
8
6
4
7
2
8
1
A0029637
Off
On
1
2
3
4
A0029633
43
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