Campbell DataView II Manuel utilisateur

DataView II

(CD295)

Dual Line Display

Revision

: 12/2021

2005 – 2021

Campbell Scientific, Inc.

Table of Contents

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1. Introduction................................................................ 1

1.1 Changes from Version 1 to Version 2..................................................1

1.2 Normal Operation Overview................................................................2

2. Installation Procedure ............................................... 3

3. Software ..................................................................... 3

3.1 Computer System Requirements..........................................................3

3.1.1 Minimum Configuration ...............................................................3

3.1.2 Recommended Configuration .......................................................3

3.2 Software Installation ............................................................................3

4. Programming ............................................................. 5

4.1 PC295W ...............................................................................................5

4.1.1 Operation.......................................................................................6

4.1.2 Online Help.................................................................................11

4.2 Device Configuration Utility..............................................................11

4.2.1 Operation.....................................................................................12

4.2.1.1 Establishing a Connection ................................................12

4.2.1.2 Downloading a Program...................................................13

4.2.1.3 Modifying Settings ...........................................................15

4.2.1.4 Upgrading the Operating System (OS).............................15

5. Mounting in Enclosure Door................................... 17

6. Shipping Kit ............................................................. 19

7. Hardware .................................................................. 19

8. Problems .................................................................. 20

9. Temperature Extremes and LCD Adjustment........ 22

Appendices

A. CD295 Door Kit Assembly Diagram ..................... A-1

B. CD295 Mounting Template.................................... B-1

C. Using Time Stamps ............................................... C-1

DataView II (CD295) Dual Line Display

1. Introduction

The DataView II is a two-line, 32-character LCD that displays real time values

from a CR2xx series data logger along with a predefined description string and

units string.

Two buttons allow the user to scroll through the programmed locations that are

updated as often as they are measured. When the user has not pressed a button

within a user-defined period (default 120 seconds), the DataView II switches to

low power mode, drawing a current of less than 1 mA.

The DataView II is easily configured using the Windows based PC295Wand

Device Configuration Utility packages.

Throughout this document the terms “DataView II”, “CD295” and

“DataView2” are used interchangeably.

FIGURE 1-1. DataView II (CD295)

1.1 Changes from Version 1 to Version 2

The original release of the CD295 operating system (V1.0) and PC295W

(V1.0) supported the CR200-series data loggers only. Version 2 of the CD295

operating system and PC295W added support for our CR1000, CR800, CR850,

and CR3000 data loggers, as well as support for their new data types (long

integers, Booleans, strings, and time stamps).

NOTE

DataView II (CD295) Dual Line Display

To use the new capabilities, both the CD295 operating system (OS) and

PC295W software needs to be upgraded to Version 2. Refer to Section 4.2.1.4,

Upgrading the Operating System (OS) (p. 15), to upgrade the CD295 OS. To

upgrade PC295W, uninstall previous software versions and then follow the

procedure provided in Section 3.2, Software Installation (p. 3).

1.2 Normal Operation Overview

Below is a general description of normal operation of the DataView II

(CD295).

When first powered up, the DataView II displays the following greeting,

Campbell

Scientific

and the backlight will be lit.

After a program has been successfully downloaded, the CD295 is configured

and connected to the data logger; it is ready for general use. Pressing one of the

buttons on the CD295 will cause the LCD to display something like the

example below.

Temperature

1.234 deg C

The top line contains a string referred to as the “Description”, and the second

line contains both the value retrieved from a Public Variable in the data logger

and a string referred to as “Units”. The value displayed on the second line can

be displayed with a user-selectable number of decimal places.

Together, the combination of “Description”, Public Variable, “Units” and

number of decimal places, is referred to as a “screen”. The CD295 is capable of

holding and displaying up to 30 “screens”. There are no limitations on the

order of screens, or which Public Variables are displayed. Pressing the buttons

on the front panel of the DataView II will cause the next (or previous) screen to

be displayed.

The CD295 will attempt to collect a new value from the data logger under the

following conditions:

•The user has changed “screen”

•The scan interval of the data logger has expired

After some time (default 10 secs), the backlight will turn off, however the text

will remain visible until the unit enters sleep mode (default 120 secs).

Whenever one of the buttons on the front panel is pressed, these two timers

(Backlight timer and Power Down timer) are both reset. As a result, the

DataView II can be woken from sleep mode by pressing either of the buttons.

Description

Value

Units

DataView II (CD295) Dual Line Display

While in sleep mode the DataView II will continue to respond to PakBus

communications, however the LCD is turned off and no requests are sent to the

data logger.

2. Installation Procedure

Below is a general guide to the steps involved in configuring and programming

a DataView II (CD295).

1. Download the latest version of the CD295 OS, PC295W, and the Device

Configuration Utility from www.campbellsci.com/downloads.

2. Connect the 9-pin D-connector of the programming cable into the CD295

data cable and the other end into your computer serial COM port.

3. Using PC295Wand the data logger program, configure your screens of

your DataView II (DV2 file).

4. Using Device Configuration Utility, send the DataView II program (DV2

file), and change any settings (e.g., PakBus Address).

5. Remove the programming cable.

6. Mount the CD295 into your data logger enclosure.

7. Connect the CD295 data cable to the data logger RS-232 port.

8. Power up the data logger and CD295 and verify correct operation.

3. Software

3.1 Computer System Requirements

3.1.1 Minimum Configuration

PENTIUM-class machine with 64 MB RAM running Windows 98.

3.1.2 Recommended Configuration

PENTIUM-class machine with 128 MB RAM running Windows 2000/XP.

3.2 Software Installation

1. To begin the installation of the PC295W software, download the latest

version of the software from www.campbellsci.com/downloads and open

the setup.exe file, which contains the software to be used.

DataView II (CD295) Dual Line Display

2. After starting Setup.exe you will be presented with a welcome screen

giving a brief introduction to the software. Click OK.

3. The next screen asks where you would like PC295W installed on your hard

disk. If you wish to install into a path other than the default, click Change

Directory and use the windows dialog to choose a suitable location. Once

the path is correct, click the Install icon in the top left corner of the

window.

4. The next dialog to appear asks which program group on the start menu,

you would like to add PC295W. The default is usually acceptable;

however, if not, you are free to choose your preferred program group in

this step. Click Continue.

DataView II (CD295) Dual Line Display

5. File copying will now begin.

6. Once the Setup is complete, the following window is displayed. You are

now ready to start using PC295W. Click OK.

4. Programming

4.1 PC295W

PC295W software is a freeware utility provided by Campbell Scientific to

write programs for the DataView II.

PC295W first reads the data logger program, to generate the list of Public

Variables and to determine the scan rate of the data logger. Once this

information has been determined, the user is able to choose a public variable to

display, and can associate “Description” and “Units” strings with it to form a

“screen”. A group of screens forms a user program, and PC295W saves this

program to disk in a DV2 file.

The CD295 is a PakBus device, using PakBus communications to

retrieve data from the data logger. However, the CD295 does not

support PakBus encryption. When the CD295 is connected to a

data logger using PakBus encryption, the data logger program

must include an EncryptExempt() statement with the PakBus

address of the CD295. Note that doing so will introduce an

exemption rule to the data logger security rules.

By default, the first part of the filename is the same as the data logger program

from which it was generated. So, for example, if you opened station1.cr2 to

create the DataView II program, PC295W would save the program as

station1.dv2. This naming convention is strongly recommended, but not

mandatory.

NOTE

DataView II (CD295) Dual Line Display

4.1.1 Operation

1. To start PC295W, click Start > Programs > PC295W DataView2

Programming Software > PC295W DataView2 Programming

Software.

2. Once the PC295W program starts you will see the main screen.

3. The first step in creating a DataView II program is to select Create new

DataView2 Program from the File menu. This will open a file browser

window which will allow you to locate the data logger program (with

CR1, CR2, CR3, or CR8 extension). When the correct data logger program

is selected, click Open.

If you already have created a DataView II program that you wish to edit,

select Open Existing DataView2 Program in the File menu. A file

browse window will appear. Locate your DataView II program (.295

extension) and click Open.

DataView II (CD295) Dual Line Display

4. If you have chosen to Create a new DataView2 program, a file browse

window will appear.

To operate correctly, your DataView II needs some information about the

program running in the data logger to which it will be connected.

PC295W reads the data logger program file you select at this step, and

extracts information such as the Scan Interval and the list of Public

variable names.

Locate the data logger program and select Open.

5. PC295W will now return to the main screen, however the CRX FileName

and DataView 2 Refresh Rate will no longer be blank. PC295W has read

your data logger program and is now ready for you to create a DataView II

program.

Select the Add Screen button.

Variable to Display has a dropdown list from which you are able to

choose a Public Variable used in the data logger program.

DataView II (CD295) Dual Line Display

6. The Description and Units fields are free-form text strings that are

displayed on the CD295 along with the value collected from the data

logger. These fields can be used to provide a user-friendly description and

engineering units of the value displayed. It is also possible to choose the

number of decimal places to be used when displaying the value.

Complete the Description, Units and Decimal Places.

You can now continue adding screens by repeating steps 5 and 6, as many

times as necessary.

If the variable you have chosen is not floating point, the Display Options

panes on the right side of the screen will provide multiple options for

displaying the variable. The example below shows the Display Options for

a Boolean variable.

Long integer data types are used to store both integer whole numbers and

time stamps. Choose Numeric Value for the Display Option if your long

integer variable is a whole number. Several display options are offered for

time stamps (see below).

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