Emerson Rosemount 375 User manual

Emerson Process Management
00375-0047-0001, rev E
Emerson Process Management
Asset Optimization Division
12001 Technology Drive
Eden Prairie, MN 55344 USA
www.fieldcommunicator.com
©2007, Emerson Process Management.
The contents of this publication are presented for
informational purposes only, and while every effort
has been made to ensure their accuracy, they are
not to be construed as warranties or guarantees,
express or implied, regarding the products or
services described herein or their use or applicability.
All sales are governed by our terms and conditions,
which are available on request. We reserve the right
to modify or improve the designs or specifications
of our products at any time without notice.
All rights reserved. The Emerson logo is a trademark
and service mark of Emerson Electric Company.
All other marks are the property of their
respective owners.
USER’S
MANUAL
375 Field Communicator User’s Manual
66440-375UsersManual.qxd 3/13/07 3:25 AM Page 1

99 Washington Street
Melrose, MA 02176
Phone [phone]
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com
Back to the Emerson 375 Product Info Page

USER’SMANUAL
March 2007 375 FIELD COMMUNICATOR
www.fieldcommunicator.com
375 FIELD COMMUNICATOR
© 2007 Emerson Process Management. All rights reserved.
The Emerson logo is a trademark and service mark of Emerson Electric Co.
AMS Suite is a trademark of Emerson Electric Co.
Rosemount and SMART FAMILY are registered trademarks of Rosemount Inc.
Windows is a registered trademark of Microsoft Corporation in the United States and
other countries.
IrDA is a registered trademark of the Infrared Data Association.
FOUNDATION is a trademark of the Fieldbus Foundation.
HART is a registered trademark of the HART Communication Foundation.
Hitachi is a registered trademark of Hitachi America, Ltd.
All other marks are the property of their respective owners.
U.S. and foreign patent numbers are pending.
NOTICE
Read this User’s Manual before working with the 375 Field Communicator. For
personal and system safety, and for optimum product performance, thoroughly
understand the contents before using or servicing this product.
For equipment service needs, contact the nearest product representative.

www.fieldcommunicator.com
USER’SMANUAL
March 2007 375 FIELD COMMUNICATOR
TABLE OF CONTENTS
SECTION 1
Introduction
Using this Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
SECTION 2
Learning the Basics
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Safety Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Product Overview and Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Installing the System Card and the Battery Pack . . . . . . . . . . . . . . . 2-4
Starting Up and Shutting Down. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Starting the 375 Field Communicator . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Entering Stand By. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Shutting Down the 375 Field Communicator. . . . . . . . . . . . . . . . . . . 2-6
Basic Features and Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Using the Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Using the Touch Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
The 375 Main Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Starting the HART application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Starting the Fieldbus application. . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Running the Settings menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Communicating with a PC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Using the ScratchPad application. . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
Managing Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
Types of Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
Battery Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
Running a Self Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
Working in an Intrinsically Safe (IS) area . . . . . . . . . . . . . . . . . . . . 2-26
Calibrating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
Waste Disposal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
Hazardous Substances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27

Table of Contents
TOC-2
SECTION 3
HART Functionality
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Basic Features and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Using A Fast Key Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Starting the HART application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Working Offline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Creating New Configurations (Offline) . . . . . . . . . . . . . . . . . . . . . . . 3-3
Opening Saved Configurations (Offline). . . . . . . . . . . . . . . . . . . . . . 3-4
Working Online. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Connecting to a HART loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Displaying the Online menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Saving an Online Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Displaying the Device Setup submenu. . . . . . . . . . . . . . . . . . . . . . 3-12
Displaying Graphics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Using Hot Keys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Setting up Hot Key options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Executing Hot Key options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Removing Hot Key options one at a time. . . . . . . . . . . . . . . . . . . . 3-16
Removing all Hot Key options . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Configuring the HART application . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
Changing the HART Polling option. . . . . . . . . . . . . . . . . . . . . . . . . 3-17
Changing Ignored Status Messages . . . . . . . . . . . . . . . . . . . . . . . 3-18
Changing the Menu Title . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
Storage Cleanup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
Viewing Available Device Descriptions . . . . . . . . . . . . . . . . . . . . . 3-19
Simulating an Online Connection to a HART device . . . . . . . . . . . 3-20
Running HART Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21
DC Voltage Measurement (HART Terminals) . . . . . . . . . . . . . . . . 3-21
Disconnecting from a HART device. . . . . . . . . . . . . . . . . . . . . . . . . 3-21
SECTION 4
Fieldbus Functionality
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Basic Features and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Link Active Scheduler (LAS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Device Interoperability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
LAS Hierarchy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
ST_REV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Table of Contents TOC-3
Starting the Fieldbus application . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Working Online . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Connecting to a Fieldbus loop. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Displaying the Live Device List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Displaying the Block List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Working with Device Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Other Block List Selections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
Displaying Graphics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
Configuring the Fieldbus application . . . . . . . . . . . . . . . . . . . . . . . . 4-21
Changing the Fieldbus Polling Addresses . . . . . . . . . . . . . . . . . . . 4-21
Changing the Slot Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21
Viewing Available Device Descriptions. . . . . . . . . . . . . . . . . . . . . . 4-22
Running Fieldbus Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23
DC Voltage and Noise Level Measurement . . . . . . . . . . . . . . . . . . 4-23
Signal Level Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23
Disconnecting from a Fieldbus Device. . . . . . . . . . . . . . . . . . . . . . . 4-24
SECTION 5
Troubleshooting
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Troubleshooting Suggestions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Error and Status Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Required Information for Technical Assistance . . . . . . . . . . . . . . . 5-10
APPENDIX A
Reference Information
Processor and Memory Specifications. . . . . . . . . . . . . . . . . . . . . . . .A-1
Microprocessor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1
Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Power Supply Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-2
Connection Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-3
Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-3
Order Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-4
Spare Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-5

Table of Contents
TOC-4
APPENDIX B
Product Certifications
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Approved Manufacturing Locations. . . . . . . . . . . . . . . . . . . . . . . . . . B-1
European Directive Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Hazardous Locations Certifications (KL option only) . . . . . . . . . . . B-2
North American Certifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
European Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
Charger / Power Supply Certification. . . . . . . . . . . . . . . . . . . . . . . . . B-4
Label Drawings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4
Approval Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-7
APPENDIX C
Graphics Information
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Screen Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2
Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3
Graphics Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4
Images . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4
Charts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-5
Graphs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-10
Glossary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G-i
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-1

www.fieldcommunicator.com
USER’SMANUAL
March 2007 375 FIELD COMMUNICATOR
SECTION 1INTRODUCTION
USING THIS
MANUAL The sections in this manual provide the following
information on the 375 Field Communicator.
Section 2:Learning the Basicscontains information on
settings, types of storage, IrDA® communication, card
readers, ScratchPad, maintenance, and managing files
and storage.
Section 3: HART Functionality contains information on
starting the HART® application, establishing
communication with connected HART devices, and
configuring the HART application.
Section 4: Fieldbus Functionality contains information
on starting the Fieldbus application, establishing
communicationwith connected fieldbus devices, viewing
the Live Device List, block lists, and configuring the
Fieldbus application.
Section 5: Troubleshooting provides solutions to the
most common 375 Field Communicator operating
problems.
Appendix A: Reference Information provides physical,
functional, and performance specifications.
Appendix B: Product Certifications contains
Hazardous Location Certifications, European directive
information, and approval drawings.
Appendix C: Graphics Information contains an
overview of the Graphics functionality and screen
options in the 375 Field Communicator.

Introduction
1-2

www.fieldcommunicator.com
USER’SMANUAL
March 2007 375 FIELD COMMUNICATOR
SECTION 2LEARNING THE BASICS
OVERVIEW This section provides instructions on basic features and
functions of the 375 Field Communicator. It also provides
information on starting, entering stand by, shutting down,
configuring, using the ScratchPad application, and
maintaining the 375 Field Communicator. The
functionality described in this section is basedon system
software version 2.0.
SAFETY
MESSAGES Procedures and instructions in this section may require
special precautions toensure the safety of the personnel
performing the operation. Information that raises
potential safety issues is indicated by a warning symbol
( ). Refer to the following safety messages before
performing an operation preceded by this symbol. See
the Troubleshooting section for more warning messages.
IMPORTANT NOTICE
Ensure the battery pack and the 375 Field Communicator are properly aligned during assembly
to prevent damage to the connector pins.
IMPORTANT NOTICE
Do not pull up on the battery pack as this could damage the power supply connector. The
System Card must be inserted or removed by applying gentle pressure in line with the axis of the
card and the socket. Do not pull upwards or press downwards on the card as this could damage
the card or the unit and void the warranty.
WARNING
A Re-Flash operation initiates the reinstallation of the firmware and software from the System
Card. This should only be performed under the direction of technical support personnel.

Learning the Basics
2-2
PRODUCT
OVERVIEW
AND
PRECAUTIONS
The 375 Field Communicator, when labeled, is an
industrial handheld communicator approved for use in
hazardous locations classified as Zone 0 (FM and CSA
only), Zone 1, or Zone 2, Division 1 and Division 2. The
fieldbus segment, to which the 375 Field Communicator
is connected, is allowed to go through Zone 0, 1, 2 and
Zones 20, 21, 22, Division 1 and Division 2.
The 375 Field Communicator supports HART and
FOUNDATION fieldbus devices, allowing the user to
configure or troubleshoot in the field. When using the
375 Field Communicator to communicate with devices,
all standards and procedures applicable to the location
should be followed. Failure to comply may result in
equipment damage and/or personal injury. Be sure to
understand and comply with the following items:
• The portable 375 Field Communicator includes an FSTN
type LCD with touch-screen, an NiMH battery pack, an SH3
processor, memory components, and integral
communication and measurement circuitry.
• An IS-approved 375 Field Communicator can be used in
Zone 0 (FM and CSA only), Zone 1, or Zone 2, Division 1
and Division 2 locations (KL option only).
• An IS-approved 375 Field Communicator may be connected
to loops or segments that are attached to equipment located
in Zone 0, Zone 1, Zone 2, Zone 20, Zone 21, Zone 22,
Division 1 and Division 2 (KL option only).
WARNING
Using Windows Explorer and a card reader to transfer files between the System Card and a PC
can corrupt the System Card. This operation should only be performed under the direction of
technical support personnel.
WARNING
The touch screen should be contacted by blunt items only, preferably the stylus included with the
375 Field Communicator. Using sharp instruments, such as screwdrivers, can cause failure of
the touch-screen interface and void the warranty. Repair of the touch screen requires
replacement of the entire 375 Field Communicator display assembly, which is possible only at
an authorized service center.

Learning the Basics 2-3
• The touch screen must be contacted using blunt items only,
preferably the stylus provided by the factory. Using sharp
instruments, such as screwdrivers, can cause failure of the
touch-screen interface and void the warranty. Repair of the
touch screen requires replacement of the entire 375 Field
Communicator display assembly, which is possible only at an
authorized service center.
• There are three terminals on the top of the unit. Two are red
and one is black. Each red terminal is a positive connection
for its protocol, while the black terminal is a common terminal
shared by both protocols. An access door ensures only one
pair of terminals is exposed at any one time. Several
markings indicate which pair of terminals is for which
protocol.
• When connecting the 375 Field Communicator to an active
FOUNDATION fieldbus segment, ensure there is adequate
spare current capacity to power the 375 fieldbus circuits. The
375 Field Communicator draws approximately 17 mA.
• The infrared port and card reader provide methods for the
375 Field Communicator to interface with a PC.
• Data is input into the 375 Field Communicator via the keypad
or touch-screen interface.
• An Expansion Module (EM) (labeled Expansion Module) is a
removable memory card that snaps into the Expansion Port.
Removal and installation of an EM is allowed in a hazardous
area.
• Only the Expansion Module or Expansion Port Plug should
be inserted into the Expansion Port. System Cards/Secure
Digital cards or other objects must not be put into the
Expansion Port. Failure to comply will void the IS approval
and the warranty.
• The Secure Digital cards used in the System Port must be
those supplied by the 375 Field Communicator manufacturer.
Failure to comply will void the IS approval and the warranty.
• Removal and installation of the battery pack in a hazardous
area is allowed.
• The battery pack must not be charged in hazardous area
environments.
• The battery pack may only be charged with the 375 Field
Communicator power supply/charger. Failure to comply may
permanently damage your 375 Field Communicator and will
void the IS approval and the warranty.
• The power supply/charger should be safeguarded from
moisture. Operating and storage temperature limits should
be respected.
• The power supply/charger should not be covered, subjected
to direct light, or placed upon or next to heat-sensitive
materials.
• Do not open or modify the power supply/charger. There are
no user-serviceable components or safety elements inside.
Opening or modifying the power supply/charger will nullify
the guarantee and the warranty.
• Use the power supply/charger with the 375 Field
Communicator only.

Learning the Basics
2-4
INSTALLING
THE SYSTEM
CARD AND
THE BATTERY
PACK
1. Place the 375 Field Communicator face down on a
level, secure surface; see Figure 2-1.
2. Lock the stand into the hanger position. To pivot past
the stand position, squeeze the stand together near
the hinge.
Figure 2-1. Back side of the 375 Field Communicator
3. With the battery pack removed, place the System
Card, with the card contacts facing up, on the main
unit System Card guide ribs (located directly below
the battery pack connector). Insert the System Card
until it is firmly in place.
4. With the main unit still face down, ensure the tops of
the two battery pack retaining screws are flush with
the top of the battery pack.
5. Install the battery pack by aligning the sides of the
battery pack and main unit and carefully sliding the
battery pack forward until it is secure. If the battery
pack and main unit are not properly aligned, the
connector pins can be damaged.
6. Tighten the two battery pack retaining screws until
they are secure (do not overtighten). The tops of the
screws should now be close to flush with the stand
groove.
Battery pack
retaining screws
Battery pack
Stand
assembly
Main unit
label
System Card
IS label
(KL Option)

Learning the Basics 2-5
STARTING UP
AND
SHUTTING
DOWN
Prior to using the 375 Field Communicator without the
charger/power supply, fully charge the battery pack. A
full charge is indicated by a solid green light on the
charger/power supply. Charging may take up to two
hours, but the 375 Field Communicator may be used
while charging. Before operating the 375 Field
Communicator, ensure:
• The 375 Field Communicator is not damaged.
• The battery pack is fully seated.
• All screws are sufficiently tightened.
• An Expansion Module (EM) or Expansion Port Plug is
in place.
• The communication terminal recess is free of dirt and
debris.
Starting the
375 Field
Communicator
Press and hold the on/off/stand by key until the
multifunction LED flashes to indicate the unit is powering
(approximately two seconds). See Figure 2-2 for the
location of the on/off/stand by key.
During start-up, the 375 Field Communicator will
automatically install any software upgrades available on
the System Card. Once the upgrade is complete, the
375 Main Menu will be displayed. After starting the 375
Field Communicator, you can:
• Launch the HART or FOUNDATION fieldbus
applications (if licensed)
• Configure/view settings
• Enter Listen For PC mode
• Launch the ScratchPad application

Learning the Basics
2-6
Entering
Stand By The 375 Field Communicator can be put into stand by,
which turns off the display and certain areas within the
375 Field Communicator. Use this option to save battery
life or to reduce the boot-up time if you will be using the
375 Field Communicator intermittently.
You can put the 375 Field Communicator in stand by
when the HART application or the Fieldbus application is
running. If you are working online with a HART or
fieldbusdevice when stand by is entered, the application
main menu will be displayed when the 375 Field
Communicator returns from stand by. Otherwise, the 375
Field Communicator will display the screen that was
open when stand by was entered.
To enter stand by, press the on/off/stand by key. From
the Power Switch dialog box, tap Stand by and tap OK
or press the enter key. Tap Cancel to close the dialog
box and return to the application. The multifunction LED
will slowly flash a green light when the 375 Field
Communicator is in stand by. To leave stand by, press
the on/off/stand by key.
The 375 Field Communicator will also enter stand by if
the stand by timer has expired. See “Power Status” on
page 2-14 for more information.
Shutting Down
the 375 Field
Communicator
To shut down the 375 Field Communicator, press the
on/off/stand by key. From the Power Switch dialog box,
tap Shut down and tap OK or press the enter key. Tap
Cancel to close the dialog box and return to the
application.
You can also shut down the 375 Field Communicator by
simultaneously pressing the backlight adjustment key
and the function key until the display turns off. This is a
mechanism by which the shut down is accomplished in
the hardware (similar to removing the power to a PC
using a switch). This is not the recommended way of
shutting off the 375 Field Communicator.
The 375 Field Communicator will also shut down if the
auto-off timer has expired. See “Power Status” on
page 2-14 for more information.

Learning the Basics 2-7
BASIC
FEATURES
AND
FUNCTIONS
Figure 2-2. 375 Field Communicator diagram
Backlight adjustment ke
y
IrDA interface
(top)
Touch screen
display
HART and fieldbus
communication
terminals (top)
Expansion por
t
(side)
Function key
(for multiple-key
combination
functionality)
Alphanumeric keypad
Power supply/charger
connection (side)
Multifunction LED
On/Off/Stand by key
Navigation keys
(four arrow keys)
Tab key
Stylus
(back)
Battery pack (back)
and System Card
(internal)
Enter key

Learning the Basics
2-8
Using the
Keypad The 375 Field Communicator keypad and touch screen
have nearly total functional redundancy.
On/Off/Stand By key
The on/off/stand by key ( ) is used to power on and off
the 375 Field Communicator or to put it in stand by. If the
on/off/stand by key is pressed when there is unsent data
or a device method is running, a warning message will
appear. Tap OK to have the 375 Field Communicator
enter stand by or shut down, or tap Cancel to return to
the previous screen.
The on/off/stand by key is disabled when the 375 Field
Communicator is in Listen For PC mode or when the
ScratchPad application is open.
Arrow Navigation keys
Four arrow navigation keys let you move through the
menu structure of the applications. Press the right arrow
key ( ) to select menu items and to navigate further into
the menu.
Enter key
The enter key ( ) lets you select the focused
(highlighted) item or to complete an editing action. For
example, if you push the enter key when the Cancel
button on a screen is in focus, you will cancel out of that
screen.
The enter keydoes not allow you to navigate through the
menu structure. Use the arrow navigation keys or the
stylus to select menu items and to navigate through the
menu structures.
Tab key
The tab key ( ) lets you move between selectable
controls.

Learning the Basics 2-9
Alphanumeric keypad
The alphanumeric keypad lets you select letters, digits,
and other characters, such as punctuation marks. It can
perform a selection of options and data entry in either
numeric or alphanumeric modes. The 375 Field
Communicator will automatically determine the mode
depending upon the input necessary for the particular
field.
To enter text when in alphanumeric mode, press the
desired keypad button in quick repetition to scroll
through the options to achieve the appropriate letter or
number. For example, to type the letter Z, press the 9
key quickly four times; see Figure 2-3.
Figure 2-3. Keypad button functionality example
Backlight Adjustment key
The backlight adjustment key ( ) lets you adjust the
intensity of the display. There are four different settings.
The intensity impacts the battery life of the 375 Field
Communicator. Expect a shorter battery life for higher
intensities; see “Backlight” on page 2-12 for the settings.
Function key
The function key ( ) lets you enable alternate
functionality on select keys. The grey characters on the
keys indicate the alternate functionality. When the
function key is enabled, the orange multifunction LED
light will appear and an indication button can be found
on the Soft Input Panel (SIP). Press the function key
again to disable the functionality.
The alternate function on the Tab and alphanumeric 5
key (insert) will be activated in future releases of the 375
Field Communicator software.

Learning the Basics
2-10
Multifunction LED
The multifunction LED lets you recognize when the 375
Field Communicator is in various states; see Table 2-1.
Table 2-1. Multifunction LED
Using the
Touch Screen The touch screen display lets you select and enter text
by touching the window. Tap the window once to select a
menu item or to activate a control. Double-tap to move
further into the menu level.
NOTE
All instructions in this manual are written for the touch
screen.
The touch screen should be contacted by blunt items
only, preferably the stylus included with the 375 Field
Communicator. Using sharp instruments, such as
screwdrivers, can cause failure of the touch-screen
interface. Repair of the touch screen requires
replacement of the entire 375 Field Communicator
display assembly, which is possible only at an authorized
service center.
Use the back arrow icon ( ) to return to the previous
menu. Use the terminate icon ( ) in the upper right
corner of the touch screen to end the application.
Use the Soft Input Panel (SIP) keyboard
The SIP keyboard allows for alphanumeric input using
the touch screen. The SIP keyboard detects when you
need to enter characters and will appear automatically
as required.
Multifunction LED Processing indication
Solid green The 375 Field Communicator is on.
Flashing green The 375 Field Communicator is in
power saving mode (stand by). The
display is off.
Solid green and orange The function key is enabled.
Blink green and orange The on/off/stand by keyhas been held
down long enough for power up.