BERTHOLD TECHNOLOGIES Uni-Probe LB 490 - Hart Interface

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Menu Structure Volume 3
2.40 HART INTERFACE
1 POLL ADDR
Enter the polling address if the Multidrop Mode (multi-detector
mode) is used.
Otherwise, leave the value at “0”.
The host terminal to identify the field device uses the “Multidrop
Mode”, if more than one HART
®
device is connected to the same-
HART
®
loop. This mode is called “Multidrop Mode”. Up to 16 HART
®
devices can be installed on one HART
®
loop. Each device must
have a different polling number between 1 and 15. If a number
higher than “0” is chosen, the “Multidrop Mode” is selected and the
current output is switched to a fixed current value of 4 mA.
Then only the digital HART
®
communication will be available.
IMPORTANT
According to the FMEDA on which this User’s Manual is based, the
Multidrop Mode must not be used in intrinsically safe applications.
Interface