W&T 57641, 57642, 57643 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
© 01/2008 by Wiesemann & Theis GmbH
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!
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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
1
To 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 Analog-In deletes the IP address and starts a cyclical search for alternative 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.
1
If 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 Analog-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 Analog-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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2.3 Table
This function is used to show the currently represented values
in table format. As soon as not all stored values can be
displayed, the following values are shown in the table for each
sensor:
Max: The maximum value in the displayed interval
Min: The minimum value in the displayed interval
Ø: The average value of the displayed interval
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3 Additional basic settings
3.1 Configuring the port and device names
3.1.1 Text
Enter your personal descriptions in the field provided and then
click on „Send“.
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3.1.2 Ports
Port 1..2:
First enter a name and a descrptive text for the port and select the
measuring range to calibrate the input circuit to your measuring
location (for models 57641, 57642 only: measuring range 0..20mA
or 4..20mA). To deactivate the port, select „Disconnect“.
Configuring the current input (57641, 57642):
Configuring the voltage input (57641, 57643):
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3.2 Local time setting
3.2.1 Time zone
Here you define the time zone in which the device is located.
The settings refer to UTC (Coordinated Universal Time ). Then
click on „Send“.
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3.2.2 Summer time
If you want your unit to automatically switch to daylight savings
time, first enter the offset to UTC. The standard value (for
Germany etc.) is two hours. Activate this function by selecting
„Apply Summertime“ and buffer store the settings („Send“).
Start/Stop
Define when daylight savings time begins and ends. The
parameters are already pre-configured:
Start:
Last Sunday in March at 02:00 hours
Stop:
Last Sunday in October at 03:00 hours
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