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5 Operation
18
5.2
On-site configuration/operation
Only the device address can be set on the electronic insert.
The two light emitting diodes indicate standby or the status of the tuning
fork (covered/free).
FEL50A
Address
ON
OFF
-
+
PA
PA
1 2 3 4 5 6 7 8
1
2
Fig. 10
On-site operation for Liquiphant PROFIBUS PA
5.2.1
Setting the device address
Choice of device address
• An address must be assigned to each PROFIBUS PA device. The process control
system only recognises the device when the address is set correctly.
• In a PROFIBUS PA network, each address may be assigned only once.
• Valid device addresses are inside the range of 0 to 126. All the devices are supplied
from the factory with the value 126.
• The factory-set address 126 can be used for a functional test of the device and for
connections to a PROFIBUS PA network in operation. Subsequently, this address must
be changed to be able to include additional devices.
Software Addressing
Software addressing is only effective if DIP switch 8 is in the "ON" position
(factory setting).
For additional information on the addressing procedure, please consult operating
manual BA198F, Chapter 5.7.
Liquiphant M/S (HT), FEL 50 A PROFIBUS PA
Address
ON
OFF
SW
HW
1 2 3 4 5 6 7 8
Plug for Service Tool
SW
HW
Yellow LED on: Tuning fork covered
Yellow LED flashing: Fault
Green LED on: Ready for operation
Green LED flashing: Communication
Endress+Hauser
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