Digi Watchport/h User manual

Distributor of Digi International: Excellent Integrated System Limited

Datasheet of 301-1141-01 - WATCHPORT TEMP SENSOR

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Datasheet of 301-1141-01 - WATCHPORT TEMP SENSOR

Watchport®

USB ENVIRONMENTAL

MONITORING

APPLIANCES

Installation

Gui e

Sensor Mo els:

Watchport/H

Watchport/P

Watchport/T

Watchport/W

Watchport/D

Watchport/A

Camera Mo els:

Watchport/VE

Watchport/V2

Watchport/V3

www. igi.com

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Datasheet of 301-1141-01 - WATCHPORT TEMP SENSOR

Table of Contents

Table of Contents.............................................................................1

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

Installing Watchport Camera Drivers..............................................2

DirectShow (DirectX) Drivers................................................2

TWAIN and AVI Drivers .......................................................3

Installing Watchport Sensor Drivers................................................4

Cabling Watchport...........................................................................6

Watchport Camera Products ...................................................6

Watchport Sensor Products.....................................................6

Installing Watchport Manager .........................................................8

Updating Base Unit Firmware .........................................................8

Using the Watchport Sensor Interface.............................................9

Watchport/A (Acceleration & Tilt Sensor)...........................10

Watchport/H (Humidity & Temperature Sensor) .................11

Watchport/P (Proximity Sensor)...........................................12

Watchport/D (Proximity & Distance Sensor).......................13

Watchport/T (Temperature Sensor)......................................14

Watchport/W (Water Detector).............................................15

Using the Edgeport Utility Program..............................................16

Regulatory and Other Information.................................................22

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Datasheet of 301-1141-01 - WATCHPORT TEMP SENSOR

Watchport Installation Guide (90000406 Rev. H) – Page 1

Intro uction

The Watchport

Series is the first line of plug-and-play USB devices for 24/7 environmental monitoring.

Asset monitoring is a key issue in reducing total cost of ownership by pre-empting system failures,

extending the life of equipment, and reducing downtime in mission-critical applications like branch server

room management and equipment room monitoring. Camera components for surveillance may be paired

with sensors for proximity, water, temperature, and humidity to create a made-to-order monitoring system.

Customers may use their own software applications with Watchport devices or use the included Watchport

Manager. Watchport Manager sends phone, email, or beeper alerts and enables easy device integration

without additional software development.

Watchport products consist of the following parts:

• The sensing device

• A USB interface (as a separate base unit or as part of the device itself)

• Watchport Manager software

The Watchport products are divided into two categories:

Camera

301-9020-01 Watchport/VE USB Camera

301-9010-01 Watchport/V2 USB Camera

301-9010-02 Watchport/V3 USB Camera

Camera Accessories

301-9012-01 Watchport/V2 Bulk 20

301-9012-02 Watchport/V3 Bulk 20

301-9014-01 Watchport Close-Up Lens

301-9015-01 Watchport Lens Package

Green: 3 mm Wide Angle, Red: 8 mm Close-Up, Blue: 12 mm Telephoto

301-9018-01 Watchport Wall Mount

301-9019-01 Watchport Clamp Mount

Sensors

301-1141-01 Watchport/H Humidity & Temperature Sensor

301-1143-01 Watchport/P Proximity Sensor

301-1144-01 Watchport/T Temperature Sensor

301-1145-01 Watchport/W Water Detector

301-1146-01 Watchport/D Proximity & Distance Sensor

301-1147-01 Watchport/A Acceleration & Tilt Sensor

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Datasheet of 301-1141-01 - WATCHPORT TEMP SENSOR

Watchport Installation Guide (90000406 Rev. H) – Page 2

Installing Watchport

Camera Drivers

NOTE: If any Watchport Camera drivers are already installed on your system, you MUST uninstall them

before continuing with these installation instructions. Also, the two sets of drivers (one for DirectShow and

one for TWAIN and AVI) are mutually exclusive; you may install one OR the other, but not both.

If you are using DirectShow (DirectX), follow the instructions below. If you are using TWAIN or AVI, go

to “TWAIN and AVI Drivers” on page 3.

DirectShow (DirectX) Drivers

You may want to check that you have the most recent version of DirectX before continuing with these

installation instructions.

For Win ows XP, 2000, an 2003 Server Users

Drivers for DirectShow (DirectX) are on the “DirectShow Driver and Manual” CD. Note that you must be

logged into an account with administrator privileges.

1) Insert the “DirectShow Driver and Manual” CD version 2.90 or above into your CD-

ROM drive.

2) Plug in the Watchport Camera. (See “Cabling Watchport” on page 6).

3) When the Found New Hardware screen for the Watchport USB Loader software

appears, choose option a) or option b):

a) Specify the location of the drivers and click Next.

b) Install from a list or specific location and click Next. The subsequent screen

allows you to search removable media, type the location path, or browse to locate the

drivers on your CD-ROM drive. Use one of these methods to locate the drivers and

click Next.

4) Windows may warn that the software “has not passed Windows Logo testing.” Click

Continue Anyway to continue with driver installation.

5) When the Found New Hardware Wizard finishes installing the Watchport USB

Loader software, click Finish.

6) Wait for the second Found New Hardware screen (for the Watchport Camera

software) to appear. When it does, again choose option a) or option b) as described in

step 3.

7) Windows may warn that the software “has not passed Windows Logo testing.” Click

Continue Anyway to continue with driver installation.

8) When the Found New Hardware Wizard finishes installing the Watchport USB

Camera software, click Finish.

Your Watchport Camera is now ready to use. To verify installation you may start the Watchport Viewer

(found in Start/Programs/Watchport imaging/Watchport Viewer).

The Watchport Viewer defaults to activating the camera (in Options/Preview). You can open a Properties

screen through Options/Video Capture Filter and adjust brightness, sharpness, contrast, color,

compression, etc.

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Watchport Installation Guide (90000406 Rev. H) – Page 3

TWAIN an AVI Drivers

For Win ows XP, 2000, an 2003 Server Users

Drivers for TWAIN/AVI are on the “TWAIN/AVI Driver and Manual” CD. Note that you must be logged

into an account with administrator privileges.

1) Insert the “TWAIN/AVI Driver and Manual” CD version 2.60 or above into your

CD-ROM drive.

2) Plug in the Watchport Camera. (See “Cabling Watchport” on page 6).

3) When the Found New Hardware screen for the Watchport USB Loader software

appears, choose option a) or option b):

a) Specify the location of the drivers and click Next.

b) Install from a list or specific location and click Next. The subsequent screen

allows you to search removable media, type the location path, or browse to locate the

drivers on your CD-ROM drive. Use one of these methods to locate the drivers and

click Next.

4) Windows may warn that the software “has not passed Windows Logo testing.” Click

Continue Anyway to continue with driver installation.

5) When the Found New Hardware Wizard finishes installing the Watchport USB

Loader software, click Finish.

6) Wait for the second Found New Hardware screen (for the Watchport Camera

software) to appear. When it does, again choose option a) or option b) as described in

step 3.

7) Windows may warn that the software “has not passed Windows Logo testing.” Click

Continue Anyway to continue with driver installation.

8) When the Found New Hardware Wizard finishes installing the Watchport USB

Camera software, click Finish.

Your Watchport Camera is now ready. To verify installation you may use the VC3Viewer (found in

Start/Programs/Watchport imaging/VC3Viewer). The camera is automatically activated. In the

Controls menu you can select Camera Control Panel to adjust image size, color format, brightness,

sharpness, quality, etc.

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Watchport Installation Guide (90000406 Rev. H) – Page 4

Installing Watchport Sensor Drivers

For Win ows XP an 2003 Server Users

You must be logged into an account with administrator privileges. If your computer is connected to the

internet, the latest Microsoft certified drivers will be automatically downloaded from the Microsoft driver

update server.

1) Plug in the Base Unit. (See “Cabling Watchport” on page 6.)

2) Insert the “Edgeport Driver” CD version 4.20 or above into your CD-ROM drive.

3) When the Found New Hardware Wizard appears click Next, and the drivers will be

automatically installed from the CD. Installation is complete when no more dialogs

appear.

For Win ows 2000 Users

You must be logged into an account with administrator privileges.

1) Plug in the Base Unit. (See “Cabling Watchport” on page 6.)

2) Insert the “Edgeport Driver” CD version 4.20 or above into your CD-ROM drive.

3) When the Found New Hardware Wizard appears, select Install from a list or

specific location (Advanced) and click Next.

4) Select Search for a suitable driver for my device and click Next.

5) Select Specify a location and click Next.

6) Type in <CD drive letter>:\Win2k and click OK.

7) Confirm that Windows is pointing to <CD drive letter>:\Win2k. Then click Next.

8) Note: Drivers installed from the CD have received “Designed for Windows 2000”

certification. Drivers downloaded from our web site may be pending certification. If

so, Windows 2000 will display a warning: Digital Signature Not Found. Click Yes to

continue with driver installation. If you click No you will need to contact Digi

Technical Support before installing your Watchport Sensor.

9) Click Finish to complete the driver installation.

For Win ows 98, an Me Users

1) Insert the “Edgeport Driver” CD version 4.20 or above into your CD-ROM drive.

2) Plug in the Base Unit. (See “Cabling Watchport” on page 6.)

3) After connecting the USB cable, the Add New Hardware Wizard appears. Click

Next.

4) Select Search for the best driver for your device and click Next.

5) Select Specify a location and type in <CD drive letter>:\Win98. Then click Next.

6) Confirm that Windows is pointing to <CD drive letter>:\Win98. Click Next.

Windows will then copy over the driver files.

7) Click Finish to complete the driver installation.

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Watchport Installation Guide (90000406 Rev. H) – Page 5

For Win ows NT 4.0 Users

Because Microsoft does not support USB in NT4.0, Digi International supplies a set of USB drivers that

will be installed along with the necessary Edgeport drivers. You must be logged into an account that has

administrative privileges before installing the drivers.

To install the USB stack and Edgeport drivers:

1) Insert the “Edgeport Driver” CD version 4.20 or above into your CD-ROM drive.

2) When the welcome dialog appears, click the Install Driver button.

Once the driver installation program has begun, follow the on screen instructions.

3a) If you are installing drivers for the first time: An Information dialog informs you that

the installation was successful. After clicking OK, the installation is complete.

3b) If you are replacing existing Edgeport drivers: Follow the on-screen instructions.

Note that, before beginning the installation of the drivers, all applications with open

ports must be closed and all USB devices unplugged. If you close all the applications

and unplug all the USB devices, then you will not need to reboot for the new drivers

to take effect immediately. If any applications are left open or USB devices plugged

in, you may choose to abort the installation or to continue and be required to reboot

before the upgrade can take effect.

Note that because Windows NT 4.0 is not Plug-and-Play, you will not see a pop-up dialog box indicating

that new hardware has been found. You may verify correct installation with the Edgeport Utility (see page

16) or the USB Status Utility (as described below).

The USB Status Utility (Viewer) can be accessed by clicking the USB icon in your system tray or by

clicking on Start / Programs / Digi USB / Edgeport Configuration Utility. This utility lists all the USB

devices installed on your PC and provides other relevant information for each device. You may also use

this utility to create a log file.

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Datasheet of 301-1141-01 - WATCHPORT TEMP SENSOR

Watchport Installation Guide (90000406 Rev. H) – Page 6

Cabling Watchport

USB Type A Connector USB Type B Connector

Watchport Camera Pro ucts

To connect a Watchport Camera, plug the Type A (flat) end of the USB cable into the USB port located in

the back of your PC or into an available USB port on a standard hub or into a Digi Hubport. Plug the Type

B (rounded) end of the USB cable into the Watchport.

The Watchport/VE Camera is additionally connected using an RCA video cable or an S-Video cable. When

using an RCA video cable, match the composite video (yellow), right audio (red), and left audio (white)

connectors with the corresponding receptacles on your video device. When using a standard S-Video cable,

match the S-Video (black), right audio (red), and left audio (white) with the corresponding S-Video and

audio connectors on your video device.

The software default is “Composite Video.” To select S-Video, open the Watchport Viewer (Start /

Programs / Watchport Imaging / Watchport Viewer). While in the Watchport Viewer, go to View /

Options / Video Capture Filter and select the Advanced tab. In the Video Source box, select S-Video

and click OK.

Watchport Sensor Pro ucts

The sensing device of the Watchport Sensor Products comes with an RJ45 terminated cable. Plug the RJ45

connector into the corresponding jack on the Watchport base unit.

Plug the Type A (flat) end of the USB cable into the USB port located in the back of your PC or into an

available USB port on a standard hub or into a Digi Hubport. Plug the Type B (rounded) end of the USB

cable into the Watchport base unit.

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Watchport Installation Guide (90000406 Rev. H) – Page 7

Exten ing the Cable

Watchport Sensor products, which are shipped

with a 6 foot cable, can be extended using a

CAT-5 twisted pair cable up to 500 feet for the

Watchport/A, Watchport/H, Watchport/P,

Watchport/D, and Watchport/T and up to 1000

feet for the Watchport/W. Contact Digi

International if you need to extend it beyond

these limits.

To extend your cable, we recommend that you

use CAT-5 twisted pair cable and follow the

wiring in Table 1. Your color assignment may

vary and you will need to adjust the tables

accordingly. Connect only the actively used

signals as indicated in the picture to the right.

Shortening the Cable

If you need to shorten the cable, cut off the RJ45

connector and crimp a new connector at the end

following the wiring in Table 2 (for all sensors).

Proximity Sensor

RJ45 Wire Color

3 Black

6 Blue

7 Red

All Other Sensors

RJ45 Wire Color

3 Yellow

4 Green

5 Black

8 Grey

Wiring Table 1: Extending the Cable

Base unit, RJ45 connector, CAT-5 twisted pair cable

RJ45 Wire Color

1 White

2 Brown

3 Yellow

4 Green

RJ45 Wire Color

5 Black

6 Blue

7 Red

8 Grey

Wiring Table 2: Shortening the Cable

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Watchport Installation Guide (90000406 Rev. H) – Page 8

Installing Watchport Manager

The Watchport Manager allows you to monitor your Watchport Camera and Sensor readings. To install the

Watchport Manager:

1. Use the browser to locate the Watchport Manager folder located on the Edgeport CD

and then double-click on 400002560.exe.

2. Click OK.

3. Click on the large button to install Watchport Manager to the specified directory.

4. Click Continue to add items to the Watchport Manager program group.

5. Wait while files are copied and the system is updated. If prompted to keep newer

existing files while installing, click Yes.

6. Click OK to complete installation.

You can open the Watchport Manager from the Start/Programs menu.

Up ating Base Unit Firmware

This section applies to Watchport Sensor base units only (not Watchport Camera products).

1. Connect the Watchport base unit to your PC. Refer to “Cabling Watchport” on page

6 for information on connecting your Watchport base unit.

2. Open the Edgeport configuration utility program, found in the Start/Programs

menu.

3. In the General tab, click on Update.

4. The Open button allows you to browse for the Watchport firmware (*.rom). The

Edgeport Utility program can detect if the firmware is the same version, an older

version, or for a different sensor.

5. After clicking Update, you will always be asked to confirm that you want to update

your firmware. NOTE: Do NOT disconnect your Watchport until the update is

complete!

6. After clicking OK, the update is complete.

See “The Edgeport Utility Program” on page 16 for more information about using this feature.

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Watchport Installation Guide (90000406 Rev. H) – Page 9

Using the Watchport Sensor Interface

The Watchport line of USB attached sensor products present themselves to a user application by way of a

virtual serial port. This serial port is named as all standard serial ports in the form of COMx where x is a

number between 1 and 255. The number assignment can be configured using the Edgeport configuration

utility. (Refer to “The Edgeport Utility Program” on page 16.)

There are two basic types of sensing devices. The first type uses an ASCII command interface:

Watchport/H and Watchport/T. The second type uses an RS-232 modem signal interface: Watchport/P and

Watchport/W. The serial port can be opened with any serial parameters. Some sensors can be operated in

either mode: Watchport/A and Watchport/D.

The first type of sensing devices uses ASCII commands. All ASCII commands sent to the sensing device

must be terminated with a carriage return character <CR>. Multiple commands may be grouped together.

For example, TCTF<CR> would cause Celsius temperature followed by Fahrenheit temperature to be

returned in the response.

The format of the response sent from the Watchport sensor to the application is an ASCII printable

character string terminated by a <CR>. For example, sending the command TF<CR> generates a single

response string such as +72.0000F<CR> and sending a grouped command such as TCTF<CR> generates

two responses such as +22.2200C<CR> followed by +72.0000F<CR>.

Other response strings generated by the Watchport sensor include Invalid Command<CR> or Sensor

Error<CR>.

The second type of sensing device uses the modem signals: DSR (Data Set Ready), DCD (Data Carrier

Detect), or CTS (Clear To Send) to inform the application of the status of the sensor.

The following sections describe each sensor and its command or signal interface.

Additional information is available at www.digi.com and Digi International’s technical support.

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Watchport Installation Guide (90000406 Rev. H) – Page 10

Watchport/A (Acceleration & Tilt Sensor)

The Watchport/A can be programmed to use either an RS-232 modem signal interface or an ASCII

command interface. In its ASCII command mode, the sensor reports the current X-axis and Y-axis

acceleration vectors relative to its ‘neutral’ position. In its modem signal mode, the sensor acts as a ‘tilt’

detector; that is, if the sensor is bumped from its ‘neutral’ position, it will raise (and then lower) its DSR

signal.

Watchport/A Commands

Command Description Return Value

?<CR>

Tells about the command set available for this Watchport. as described in this section

I<CR>

Tells what kind of Watchport is connected.

Watchport/A<CR>

C<CR>

Calibrates the sensor.

OK<CR>

A<CR>

Reflects the current acceleration.

+/-n.nngX

+/-m.mmgY<CR>

U<CR>

Reads the raw axis values. These are the values that would be

read if the Ccommand were never executed.

+/-n.nngX

+/-m.mmgY<CR>

E<CR>

Switches to modem signal mode. Until any other keystroke,

the sensor uses DSR to signal ‘tilt.’

OK<CR>

Mn<CR>

Adjusts sensitivity. Mis followed by a single digit: 1(most

sensitive) through 9(least sensitive).

OK<CR>

Note that for the return values of commands Aand U, +/- means the value will be either positive or

negative, n.nn and m.mm represent a number to the hundredth decimal, gstands for gravitational value,

and Xfor the x axis and Yfor the y axis.

For starting in either mode:

Step 1: Mount the sensor at its ‘neutral’ position.

Step 2: Calibrate sensor to establish its ‘neutral’ position.

C<CR>

Calibrates the sensor.

OK<CR>

Step 3: Verify correct calibration.

A<CR>

Use to verify calibration. The response should be very close

to 0 for both axes.

+0.00gX +0.00gY<CR>

Now the sensor can either be left in ASCII mode or the E<CR> command can be sent to switch it to modem

signal mode.

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Watchport Installation Guide (90000406 Rev. H) – Page 11

Watchport/H (Humi ity & Temperature Sensor)

The Watchport/H uses an ASCII command interface. Its operating range is -40C to +85C. For best results,

avoid exposure to bright light.

Watchport/H Commands

Command Description Return Value

?<CR>

Tells about the command set available for this Watchport. as described in this section

I<CR>

Tells what kind of Watchport is connected.

Watchport/H<CR>

H<CR>

Gives the percentage relative humidity.

38%<CR>

T<CR>

Gives temperature in Celsius.

+22.2500C<CR>

TC<CR>

Also gives temperature in Celsius.

+22.2500C<CR>

TF<CR>

Gives temperature in Fahrenheit.

+72.0000F<CR>

TF+<CR>

Repeats the TF command every 3-4 seconds until the next

keystroke. Appending +also works with the TC and H

commands

+72.0000F<CR>

L4<CR>

Adjusts the slew rate* of the data line. When “L” is followed

by a numeric value, 1through 8, Watchport responds with

OK. Other values return Invalid Command. The default

setting is 4. Adjust the parameter until the data transmission

becomes error-free. The setting remains in effect until the

Watchport is power-cycled.

* Slew rate, as associated with 1-wire devices, determines the round-trip propagation time of a signal and

depends on the number of devices connected and the length of the cable.

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Watchport Installation Guide (90000406 Rev. H) – Page 12

Watchport/P (Proximity Sensor)

The Watchport/P uses an RS-232 modem signal interface. The sensor acts as a ‘proximity’ detector; that is,

if an object comes within range, the sensor will raise (and then lower) its DSR signal. The Watchport/P

detects the presence of objects within a user-selectable range of 0.5 to 1.5 meters (1.64 to 4.9 feet) of the

device and can give a reading as frequently as 100 times per second. If using the Watchport Manager, the

sensor defaults to 1 read per 3 seconds.

Watchport/P Panel Description

To access the panel, pull tab out and lift up cover. Push firmly to close.

Red LED This light indicates that the sensor is receiving some reflection of its signal but not

enough to trigger the amber light. A persistent red light may mean that the sensor needs

service. DSR is unaffected.

Amber LED This light triggers the sensor. DSR goes high, so a message is sent.

PNP switch This is the default setting. Watchport/P functions only with PNP selected.

NPN switch This setting is not used.

L. ON switch This is the default setting. DSR goes high when something comes within proximity of

the sensor.

D. ON switch This setting changes the sensor so that DSR goes high when something is NOT within

proximity of the sensor.

SENS. knob Adjust potentiometer with a small screwdriver. Adjusting higher (H) will increase

sensitivity, lower (L) will lower sensitivity.

Watchport/P Commands

Command Description Return Value

?<CR>

Tells about the command set available for this Watchport. as described in this section

I<CR>

Tells what kind of Watchport is connected.

Watchport/P<CR>

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Watchport Installation Guide (90000406 Rev. H) – Page 13

Watchport/D (Proximity & Distance Sensor)

The Watchport/D can be programmed to use either an RS-232 modem signal interface or an ASCII

command interface. In its ASCII command mode, the sensor reports the distance to the object (if any). In

its modem signal mode, the sensor acts as a ‘proximity’ detector; that is, if an object comes within range,

the sensor will raise (and then lower) its DSR signal. The default mode is Proximity.

Watchport/D Commands

Command Description Return Value

?<CR>

Tells about the command set available for this Watchport. as described in this section

I<CR>

Tells what kind of Watchport is connected.

Watchport/P<CR>

For the ASCII command mode:

D<CR>

Reflects the current distance. The valid range is from

20 cm to 150 cm. Otherwise, the sensor indicates no object.

nnncm<CR>

No Object<CR>

For the modem signal mode:

E<CR>

Enables monitor function. Until any other

keystroke, the sensor uses DSR to signal ‘proximity.’

OK<CR>

Mn<CR>

Adjusts sensitivity Mis followed by a single digit:

1(most sensitive) through 9(least sensitive).

OK<CR>

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Watchport Installation Guide (90000406 Rev. H) – Page 14

Watchport/T (Temperature Sensor)

The Watchport/T uses an ASCII command interface. Its operating range is -55C to +125C.

Watchport/T Commands

Command Description Return Value

?<CR>

Tells about the command set available for this Watchport. as described in this section

I<CR>

Tells what kind of Watchport is connected.

Watchport/T<CR>

T<CR>

Gives temperature in Celsius.

+22.2500C<CR>

TC<CR>

Also gives temperature in Celsius.

+22.2500C<CR>

TF<CR>

Gives temperature in Fahrenheit.

+72.0000F<CR>

TF+<CR>

Repeats the TF commend every 3-4 seconds until the next

keystroke. Appending +also works with the TC and T

commands.

+72.0000F<CR>

L4<CR>

Adjusts the slew rate* of the data line. When Lis followed by

a numeric value, 1through 8, Watchport responds with OK.

Other values return Invalid Command. The default setting

is 4. Adjust the parameter until the data transmission becomes

error-free. The setting remains in effect until the Watchport is

power-cycled.

Invalid Command

* Slew rate, as associated with 1-wire devices, determines the round-trip propagation time of a signal and

depends on the number of devices connected and the length of the cable.

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Watchport Installation Guide (90000406 Rev. H) – Page 15

Watchport/W (Water Detector)

The Watchport/W uses an RS-232 modem signal interface and gives a binary output as frequently as 100

times per second. If using the Watchport Manager, the sensor is defaults to 1 read per 3 seconds.

DCD high indicates wet and DCD low indicates not wet.

The two prongs projecting from the bottom are for securing the detector to a soft surface such as pinewood

or wallboard. The surface should not be conductive when it is dry, so it cannot be a metallic or other

conductive material.

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Watchport Installation Guide (90000406 Rev. H) – Page 16

Using the E geport Utility Program

For all Win ows Operating Systems

The Edgeport configuration utility program (edgeport.exe) allows you to manage the serial ports of your

Watchport product. Note that with Windows NT you must have administrative privileges in order to change

the COM port settings. For more information, see the Support section at www.digi.com.

General Tab

The General tab in this utility allows you to do the following:

•Information - Check the manufacturing information pertaining to your device.

Digi International

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Watchport Installation Guide (90000406 Rev. H) – Page 17

•Configure - Reassign the physical port on your device to any available Windows COM port number

from 1 to 255 and give your device a user friendly Device Name. This capability is particularly

helpful if you have more than one device.

•Port Flags - Configure performance options and special functionality on a per-port basis.

Low Latency:

Normally the UART will interrupt when the receiver has been idle for 4 character times.

(For example 4ms at 9600) As long as data is being received the UART will continue to

buffer them until its internal FIFO is full (~56 bytes). This flag causes the Edgeport to

poll the RX FIFO for received bytes. If any bytes are available they will be sent to the

driver without any delay.

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