KROHNE MFC 300 EN - Manual (Page 148)

9
DESCRIPTION OF HART INTERFACE
148
MFC 300
www.krohne.com 02/2012 - 4000498602 - MA MFC 300 R03 en
9.3 Connection variants
The signal converter is a 4-wire device with 4...20 mA current output and HART ® interface.
Depending on the version, the settings and the wiring, the current output can operate as passive
or active output.
• Multi-Drop Mode is supported Multi-Drop Mode is supported Multi-Drop Mode is supported Multi-Drop Mode is supported
In a Multi-Drop communication system, more than 2 devices are connected to a common
transmission cable.
• Burst Mode is not supported Burst Mode is not supported Burst Mode is not supported Burst Mode is not supported
In the Burst Mode a slave device transfers cyclic pre-defined response telegrams, to get a
higher rate of data transfer.
There are two ways of using the HART ® communication:
• as Point-to-Point connection and
• as Multi-Drop connection with 2-wire connection or
as Multi-Drop connection with 3-wire connection.
INFORMATION!
For detailed information about the electrical connection of the signal converter for HART
® , see
the "Electrical connection" section.
.book Page 148 Monday, February 6, 2012 11:01 AM