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®
744
Documenting Process Calibrator
HART Mode Users Guide
PN 691292
December 1998
© 1998 Fluke Corporation, All rights reserved. Printed in U.S.A.
All product names are trademarks of their respective companies.
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Table of Contents Title Page Introduction..................................................................................................................... 1 How to Contact Fluke ..................................................................................................... 2 Connecting to a HART Transmitter ................................................................................ 3 Supported vs. Generic Transmitters................................................................
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744 HART Mode Users Guide Calibrating a Supported HART Transmitter .................................................................... 15 Loop Test.................................................................................................................... 16 Output Trim................................................................................................................. 17 Sensor Trim.............................................................................................
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List of Tables Table Title Page 1. Supported vs. Non-Supported Instruments............................................................................ 7 iii
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744 HART Mode Users Guide iv
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List of Figures Figure Title Page 1. Connecting to a HART Transmitter........................................................................................ 5 2. 744 HART Mode Menu Tree.................................................................................................. 9 3. Block Diagram of a HART Transmitter .................................................................................. 14 v
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744 HART Mode Users Guide vi
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Documenting Process Calibrator HART Mode This manual describes how to use HART mode, which is Introduction active when the calibrator is communicating over its serial HART interface to a HART transmitter. Refer to the w Warning 744 Users Manual for safety, analog mode operating To avoid electric shock, read the Safety instructions, specifications, and other general information. Information in the 744 Users Manual before All of the calibrator functions described in the 744 Users you use the Fluke
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744 HART Mode Users Guide How to Contact Fluke To contact Fluke, call: USA and Canada: 1-888-99-FLUKE (1-888-993-5853) Europe: +31 402-678-200 Japan: +81-3-3434-0181 Singapore: +65- -276-6196 * Anywhere in the world: +1-425-356-5500 Or visit us on the World Wide Web: www.fluke.com 2
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Documenting Process Calibrator HART Mode Connecting to a HART Transmitter 4. If the transmitter is not powered by a loop power Connecting to a HART Transmitter supply, press the Loop Power softkey to activate 24V To connect to and begin to communicate with a HART loop power. transmitter, refer to Figure 1 and proceed as follows: Note The calibrator provides loop power through an Note internal series resistance of 250 Ω. If you only want a communication connection to If the calibrator shows a m
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744 HART Mode Users Guide The Active Device screen provides the following information for all transmitters, supported or generic: • Poll address (if not 0) • Model number and Tag ID • PV (Primary Variable) • PVAO (digital representation of the Analog Output) • PV LRV (PV Lower Range Value) • PV URV (PV Upper Range Value) pe06s.bmp • Softkeys for accessing HART operation menus 4
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V mA mA V RTD RTD CAT SOURCE MEAS 30V 300V MAX MAX 30V 30V MAX MAX Documenting Process Calibrator HART Mode Connecting to a HART Transmitter RTD DOCUMENTING PROCESS CALIBRATOR 744 Transmitter S -PS +PS M MEAS mA SETUP SOURCE Z TC -IN V V Hz RTD +IN 7 89 CLEAR (ZERO) 45 6 12 3 ENTER 0 . TC pe01c.eps Figure 1. Connecting to a HART Transmitter 5
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744 HART Mode Users Guide 2. If the calibrator is not connected to a HART Supported vs. Generic Transmitters transmitter, press the r key followed by More The calibrator communicates with virtually all HART Choices. transmitters. In addition, the calibrator is programmed to 3. Press the Device Revs softkey. The Browser screen use device-dependent commands for a selection of HART appears. transmitters and their software versions. These are “supported transmitters.” All other transmitters are “gen
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Documenting Process Calibrator HART Mode Supported vs. Generic Transmitters Table 1. Supported vs. Generic Transmitters (Devices) Menu Operation Supported Transmitter Generic Transmitter Single Point Multidrop Single Point Multidrop Top Level Active Device screen •• • • Setup Basic (read/write, cloning capability) •• • • Sensor (read only) •• • • Device Identification (read/write) •• • • HART Output (read/write) •• • • HART Information (read only) •• • • Service Loop Test • Not Available • Not A
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744 HART Mode Users Guide Setup Operations Communication Operations The Setup softkey provides access to the following five Figure 2 shows the HART Mode menu tree. Availability of setup functions: some elements in the menus depends on which transmitter you are using, and whether the transmitter is • Basic configured by itself on a current loop or in a multidrop • Sensor connection. • Device Identification • HART Output Viewing Process Variables • HART Information From the Active Device screen pr
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Documenting Process Calibrator HART Mode Communication Operations (Example) • Tag PV • PV units PROCESS % Range • LRV, URV Basic • Sensor serial number AO • Damping • Sensor lower and SV, TV, QV • Transfer function upper limits • Sensor minimum span Sensor (temperature devices only) • Sensor type • Sensor connections • Software version • Final assembly number Device SETUP •Tag Identification • Message • Date • Description • Write protect HART • Alarm state Output • HART poll addres
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744 HART Mode Users Guide Sensor Device Identification From the Active Device screen press the Setup and From the Active Device screen press the Setup and Sensor softkeys to access the read-only Sensor Setup Device Identification softkeys to view information about the screen. This is where you can view information about the transmitter. You can program the Tag, Message, Date, sensor in the transmitter, including serial number, limits, and Descriptor registers in the transmitter using this and sp
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Documenting Process Calibrator HART Mode Communication Operations HART Output HART Information From the Active Device screen press the Setup and HART From the Active Device screen press the Setup and HART Output softkeys to access the read/write HART Output Information softkeys to access the read-only HART screen. Here you can change the Poll Address (0 = single Information screen. This screen shows more complete transmitter, any other address = multidrop), and control information about the tra
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744 HART Mode Users Guide Service Operations Interaction between Analog Mode and HART Mode The Service softkey provides access to Loop Test, Pressure Zero Trim (where applicable), Output Trim, and Analog mode is normal calibrator operation, as described Sensor Trim operations. For generic transmitters, only in the 744 Users Manual. HART mode is activated when Loop Test, Output Trim, and Pressure Zero Trim are you press the r (HART) key. This action starts available. (See Table 1.) The trim (adj
