W&T 57641 User manual

W&T

Manual

Web-IO Analog-In

Type 10/100BaseT, 12-24V

Model 57641, 57642, 57643

Release 1.4, Jan 2008

W&T

Microsoft, MS-DOS, Windows, Winsock and Visual Basic

are registered trademarks of the Microsoft Corporation

Subject to errors and modifications:

Since we can make mistakes, none of our statements should be

taken without verification. Please inform us of any mistakes or

misunderstandings you notice so that we can become aware of

them and remedy them as quickly as possible.

Perform work on and with W&T products only as described and

after you have read and understood this manual thoroughly.

Improper use may result in hazards. We are not liable for improper

use. In case of doubt please check with us or your dealer first!

W&T

Introduction

The W&T Web-IO Analog-In models incorporate all the

functions in one box for capturing, storing and displaying your

analog measurements (0...20mA or 0...10V). A variety of alarm

functions is also available which can be custom implemented

in your own applications or in existing systems.

This manual contains all the information you need for

installing, configuring and operating the Web-IO Analog-In

module.

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Table of Contents

Introduction ............................................................................................ 3

1 Quick Start-up ..................................................................................... 6

1.1 Connecting the supply voltage ........................................ 6

1.2 Connecting the measurement lines .................................. 6

1.3 Assigning the IP address using „WuTility“ ......................... 8

1.4 IP assignment using DHCP protocol ................................ 10

1.4.1 Activating/deactivating DHCP ................................ 10

1.4.2 System Name ........................................................ 11

1.4.3 Lease time ............................................................ 12

1.4.4 Reserved IP addresses ........................................... 13

1.4.5 Dynamic IP addresses ............................................ 13

1.5 Assigning the basic network parameters ......................... 14

2 Graph Display of the Measurements ........................................17

2.1 Basic functions ............................................................. 17

2.2 Config menu ................................................................ 19

2.3 Table ............................................................................ 21

3 Additional basic settings .............................................................22

3.1 Configuring the port and device names .......................... 22

3.2 Local time setting ......................................................... 24

3.3 Automatic time setting using a networjk time service ....... 27

3.4 Configuring the data logger ........................................... 28

3.5 Configuring the graphics display ................................... 30

3.5.1 Basic Settings ....................................................... 30

3.5.2 Select Sensor ........................................................ 32

3.5.3 Scale Config ......................................................... 34

3.6 Calibration ................................................................... 35

3.7 Browser access ............................................................. 37

3.8 E-mail alarms ................................................................ 38

3.9 SNMP incl. alarm sending via Trap .................................. 46

3.10 Sending alarms via TCP (Client Mode) ........................... 49

3.11 Sending alarms via FTP (Client Mode) ........................... 50

3.12 Sending alarms via Syslog ............................................ 54

3.13 ASCII command strings via TCP Port 80 ........................ 55

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3.14 ASCII command strings via UDP ................................... 56

3.15 UP-/Download ............................................................. 57

4 Individual querying of measured values ...............................59

4.1 Querying via TCP/IP ...................................................... 59

4.2 Querying via UDP .......................................................... 59

4.3 Querying via SNMP ........................................................ 60

5 Java Applets - Auto-updating in the browser .................. 62

5.1 Working with the Java applet .......................................... 62

5.2 Using the applet with JavaScript ..................................... 64

6 Data Logger .......................................................................................67

7 Appendix ............................................................................................68

7.1 Alternate IP address assignment .................................... 68

7.2 Example for creating your own Web pages ...................... 71

7.3 Firmware update ........................................................... 78

7.3.1 Where do I obtain the current firmware? .................. 78

7.3.2 Firmware update over the network under Windows ... 78

7.3.3 LED indicators ...................................................... 80

7.4 Technical Data .............................................................. 82

7.5 Declaration of Conformity .............................................. 83

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1 Quick Start-up

It takes only a few steps to start up the Web-IO Analog-IN

module and make it visible in your network.

1.1 Connecting the supply voltage

Connect 12-24V AC/DC to the terminal provided using the plug-in

power supply included. Polarity is uncritical.

1.2 Connecting the measurement lines

Screw the measuring lines into the 6-pole female connector

provided and plug it into the device.

Power

Network

Status

Error

I+ GND U+ GND

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1.2.1 Terminal designations

I+ : Current input 0..20mA

U+ : Voltage input 0..10V

GND : Ground

!Please note when wiring the inputs that they use the

same GND internally.

1.2.2 Pin configuration 57641

Web-IO Analog-In 0..20mA / 0..10V

1.2.3 Pin configuration 57642

Web-IO Analog-In 2x 0..20mA

1.2.4 Pin configuration 57643

Web-IO Analog-In 2x 0..10V

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1.3 Assigning the IP address using „WuTility“

Once the hardware has been connected to the supply voltage

as described above, you must assign the IP address needed for

operation in a TCP/IP network. You can obtain the correct value

for this parameter from your system administrator.

! The IP address must be unique throughout the network.

There are various ways of assigning the IP address. To make it

as convenient as possible, we have developed the „WuTility“

tool, which you can download from the WuT homepage at

http://www.wut.de. This procedure is described in the

following. A summary of the alternatives can be found in the

Appendix to this manual under 7.1.

Be sure that the PC you are using to assign the IP address is

located in the same sub-network as the module and that both the

PC and the module are connected to the network.

When it starts, WuTility automatically searches the local network

for connected W&T network devices and generates an inventory

list. This search process can be repeated manually as often as

desired by clicking the Scan button:

Select from the displayed list your Web-IO Analog-In based on

the MAC address:

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Click on the „IP address“ symbol:

In the resulting window enter the desired network parameters for

the device and confirm by clicking on „Continue“.

The BOOTP client of the Web-IO Analog-In can be activated in the

following window.

Clicking on the Continue button assigns the network parameters

to the Web-IO Analog-In. All the columns in the device list in

WuTility are filled with information. After clicking on the globe in the

WuTility menu list your standard browser is opened and you will

see the start page for the device.

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1.4 IP assignment using DHCP protocol

Many networks use DHCY (Dynamic Host Configuration

Protocol) or its predecessor BOOTP described in the following

section for centralized, dynamic assignment of network

parameters. By default DHCP protocol is activated, so that in

network environments with dynamic IP assignment you only

need to connect the Web-IO Analog-In to the network. The

following parameters can be assigned using DHCP:

• IP address

• Subnet mask

• Gateway address

• DNS server

• Lease time

1To prevent undesired address assignment

or address changes, we recommend deactivating DHCP,

BOOTP and RARP unless these are expressly used in the

respective network environment. Web-IO Analog-In with

incorrectly assigned IP address can be conveniently found and

reconfigured after the fact using the scan function of the

WuTility management tool.

1.4.1 Activating/deactivating DHCP

By default DHCP is activated. The following methods are

available for deactivating or later reactivating DHCP protocol.

•Management tool WuTility

Select the desired Web-IO Analog-In from the device list and

click on the IP address button. In the first dialog window

enter the new network parameters and then click on Next.

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In the following dialog window deactivate the options

BOOTP and DHCP. Click on Next to send the new

configuration data to the Web-IO Analog-In.

• Web Based Management

In Config r Device r Basic Settings r Network you can

alternately activate or deactivate both the protocols. Detailed

information about this can be found in section Assigning the

basic network parameters 1.5.

1.4.2 System Name

To support any automated updating of the DNS system by the

DHCP server, the Web-IO Analog-In identifies itself within the

DHCP protocol with its system name. The factory setting for this

is WEBIO- followed by the last three places of the Ethernet

address. For example, the default system name of a Web-IO

Analog-In having Ethernet address 00:c0:3d:01:02:03 is WEBIO-

010203. The system name of the Web-IO Analog-In can be

changed using Web Based Management.

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1.4.3 Lease time

The lease time determined and sent by the DHCP server

specifies how long the IP address will remain in use. After half

the lease time has expired the Web-IO Analog-In attempts to

extend the time for the assigning DHCP server and to update

the address. If this is not possible by the time the lease time

expires, for example because the DHCP server can no longer

be reached, the Web-IO Analog-In deletes the IP address and

starts a cyclical search for alternative DHCP servers in order to

assign a new IP address.

Because the clock is missing, the lease time associated with the

current IP address is no longer available after a reset. Therefore,

after the restart an update query is generated for the original

DHCP server. If it is not available at this time, the Web-IO Ana-

log-In deletes the IP address and starts a cyclical search for al-

ternative DHCP servers.

If DHCP is activated, the remaining lease time together with the

current IP address is shown in seconds in the menu branch

Home r Doc r Property.

1If after the assigned lease time has expired the DHCP

server cannot be reached, the Web-IO Analog-In deletes

its IP address. All existing TCP/UDP connections between the

Web-IO Analog-In and other network clients are closed. To

prevent disturbances of this kind, we recommend setting the

lease time in the DHCP server to infinite.

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1.4.4 Reserved IP addresses

The Web-IO Analog-In provides services which can make use of

other clients in the network as needed. To open a connection

they of course need the current IP address of the Web-IO Ana-

log-In, so that in these applications it makes sense to reserve a

particular IP address for the Web-IO Analog-In on the DHCP

server. As a rule this is done by joining the IP address to the

worldwide unique Ethernet address of the device, which can be

found on the sticker on the housing.

1.4.5 Dynamic IP addresses

Fully dynamic IP address assignment, in which the Web-IO Ana-

log-In gets a different IP address after each restart or after the

lease time has expired, is only useful in network environments

with automatic cross-connection between the DHCP and DNS

services. This means when a new IP address is assigned to the

Web-IO Analog-In, the DHCP server then automatically updates

the DNS system as well. The new address is assigned to the

respective domain name. For detailed information about your

network environment, consult your system administrator if in

doubt.

Dynamic, changing IP addresses can also be used for time

server queries, sending of e-mails or other client applications

in which the device itself searches for active connection to

server services located in the network.

5xxxx [Typ]

EN=00c03d004a05

OK xxxxxx

Ethernet-address

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On the next page select the configuration path with the aid of the

profiles.

Select the profile „Basic network parameters“ and click on the

„Show profile“ button.

1.5 Assigning the basic network parameters

In the configuration tree at left click on „Config“.

You are now prompted to enter a password. The factory default

setting is for no password, so that you can simply click on the

Login button without entering a password.

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The device now automatically displays the necessary menu points

for this profile. Click on „Network“ in the configuration menu.

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Then clicking on the „Save“ button saves the settings in the

device and closes your configuration session. After the network

parameters have been changed the device automatically

restarts itself.

The device is now ready for use in your network. For convenience

you can use the additional profiles for adapting the unit to your

specific needs.

On the following page enter all the necessary network parameters

and when you are finished click on the „Logout“ button.

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2 Graph Display of the Measurements

2.1 Basic functions

The device provides a table of the current values and a graph

of the stored values.

By using the control buttons at the bottom of the page you can

do the following.

Scroll the graph to right or left by the size

of the display interval, to within one unit.

Scroll left or right in the graph in

increments of one unit of the X-axis.

Zoom the area of the graph indicated at

the lower right edge.

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Zooms back to the previous zoom level.

Activates automatic refreshing of

the graph.

Value visualization:

Large marker: This measured value is

stored in the device data logger.

Small marker: This measured value is a

volatile value which is used only for

display but which is not stored in the data

logger.

!When exiting the zoom level, these

measurements are lost. The

connectinglines are only displayed

in the zoom level which represents the

memory.

Refreshes the display

To print out the page containing the graph, it is necessary to

activate printing of background colors and images in the

Internet options. In Microsoft Internet Explorer this setting is

found in

Tools -> Internet options -> Advanced

Opens the configuration menu beneath

the graph

Displays the values currently displayed in the

graph in table form.

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Design and positioning of the graph is configurable.

2.2 Config menu

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The following functions are available from the configuration

menu beneath the graph:

Start: Here you specify the starting time for the X-axis.

End: Here you specify the ending time for the X-axis.

Polling Rate: Enter here the desired refresh rate for the graph.

The device provides a new value no sooner than after 4

seconds. Entering a value of less than 4 is not useful.

Active: Use this to turn the individual sensors on or off.

Display, Extreme: If a zoom level is selected in the graph in

which a display point represents a measuring interval and not

an individual measuring point, this function is used to display

the maximum and minimum measured in this interval. If the

zoom level is selected such that every measured value is

displayed, this function has no effect. If the function is

deactivated, the average value of the displayed interval is

displayed.

Apply changes: Immediately applies the changes made for the

graph.

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W&T 57641 User manual

W&T 57641 User manual

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