Chapter 8: Hart ® Device Operations; Introduction; About Hart - GE Druck DPI 620-IS User Manual

8.1 Introduction

8.2 About HART

[EN] English - K0460
Chapter 8: HART
The DPI 620-IS calibrator can be used to communicate with
devices that use the HART
The Universal and Common Practice commands specified in
•
®
HART revision 5 to 7.
This section includes procedures to use the HART
available in the calibrator.
Before starting:
• Read and understand the
Do not use a damaged instrument.
•
Note: Use only original parts supplied by the manufacturer.
®
The HART (Highway Addressable Remote Transducer) protocol
•
uses a digital signal on top of a standard 4 - 20 mA current loop
to get data to and from a HART
following are typical operations:
read the primary variable and the analogue output.
•
read the device serial number, type and supplier.
•
get calibration data (upper and lower range values, sensor
•
limits, calibration date).
do status and fault finding checks.
•
change the device configuration (range, units, damping).
•
One HART device (a master device) starts and controls the
communications with commands. The field device (a slave device)
uses each command to make a change and/or send data back.
Two master devices are permitted: a primary master (usually the
main control and monitor system), and a secondary master
(usually a hand-held communicator). The DPI 620-IS calibrator
operates as a secondary master.
®
device operations
®
protocol:
®
"Safety" section.
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enabled field device. The
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HART device operations 8-1
functions