General; Mc5-Is And Hart - BEAMEX MC5-IS User Manual

General

MC5-IS and HART

HART (Highway Addressable Remote Transducer) is a digital com-
munication protocol that uses sine waves superimposed on the stan-
dard 4 - 20 mA current. Because the HART signal is small, and its
average value is zero it does not affect the accuracy of the analog
current signal.
HART is a master-slave communication protocol, which means that
during normal operation, each slave (field device) communication
is initiated by a master communication device. Two masters (a pri-
mary master and a secondary master) can connect to each HART
loop.
The HART communication protocol is an open standard owned by
the member companies in the HART Communication Foundation
(HCF). For additional information contact:
HART Communication Foundation,
9390 Research Boulevard, Suite I-350, Austin, Texas, 8759 USA.
Internet: http://www.hartcomm.org
MC5-IS Multifunction Calibrator's HART communication is a firm-
ware option that can be used provided an E module is included in
the MC5-IS at hand. The HART modem required for HART commu-
nication is located in the E module and the terminals of the E mod-
ule are used for connecting MC5-IS with the Hart instrument.
MC5-IS supports HART Revision 5. Earlier revisions are not sup-
ported.
MC5-IS treats the Analog Output (AO) and the Digital Output (PV,
Primary Variable) as separate instruments. To calibrate/trim both
output signals, an Analog Output instrument and a Digital Output
instrument need to be created into MC5-IS' instrument database.
This can be done manually or automatically by communicating with
the HART instrument to be calibrated/trimmed.
General
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