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Data Acquisition From Your Web Browser
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High Performance: 500 KHz, 32 Channels, 12 Bit Accuracy
webDAQ/100 uses the highest quality analog components together with digital signal processor (DSP) technology to bring you top performance. Up to 32 separate signals can be acquired simultaneously, or terminals can be combined in differential input pairs for higher noise rejection. Any combination of single-ended and differential pairs can be used. Averaging can be used if necessary to reduce the effects of noisy environments.
Multiple Sampling Rates
Most data acquisition products have a single sampling clock. But real-world signals don’t all happen at the same rate. That’s why webDAQ/100 provides up to four sampling rates during a single acquisition. Slow signals like temperatures can be sampled less often, and fast signals like audio waveforms can be gathered at high rates.
Sensor Conversions
Your sensors don’t all measure volts and bits - they sense temperature,
pressure, resistance, strain, and more. webDAQ/100 provides acquired data
directly in engineering units.
You can configure a webDAQ/100 channel to
process your inputs using your choice of scaling: linear, quadratic, current,
resistance divider, resistance bridge, strain gage (7 different circuits), RTD,
and thermocouples (B,E,J,K,R,S,T,N). Comprehensive built-in help shows you how
to wire your sensors to webDAQ/100. Presets for common sensor types such
as thermocouples and raw voltages allow common setup of all channels with the
same parameters.
Extensive Triggering Options
webDAQ/100 offers both digital and analog triggering. In fact, acquisition can be configured to start or to stop on either type of trigger, or to stop after a desired amount of data has been collected.
8 Analog Outputs For Circuit Stimulus
With eight independent waveform-quality D/A outputs, webDAQ offers far more capability than most data acquisition products. Some sensors such as RTDs and strain gages require an excitation voltage source, which can easily be provided directly by webDAQ. The outputs are conveniently grouped with the input terminals.
Removeable Screw Terminals, No Long Cables
Since webDAQ/100’s signal connections are built right in, you can connect your sensors right to the unit, with no external cables and junction boxes required. A direct connection also provides high signal quality with low noise.
Modbus Ethernet and Serial protocol - New in Version 2.0
webDAQ/100 can be used as a device on factory automation or HMI software such as Intellution IFIX or Wonderware through the Modbus interface. For maximum flexibility the hardware interface can either be through your ethernet or serial ports. Commonly used on PLC's and other factory automation systems, this new capability provides integration with the worlds leading factory management systems.
Configurable Report Formats
webDAQ/100’s report setup screens allow creating, naming, and saving multiple
report formats that can then be retrieved at any time. Formatting provides
control over the data channels to be included, numeric formats, headers and
labels, time-stamps for data, and more.
Time intervals for data retrieval can
also be pre-defined, so it is easy to call up such items as all the data, the
last 10 minutes, all of the first shift in a factory, or any time span you
choose.
E-Mail Data Reports and FTP (File Transfer Protocol)
Need your data sent to you? webDAQ/100 can e-mail any report to the address of your choice. Download your data by connecting directly to webDAQ/100’s built-in FTP server. Or have webDAQ/100 upload data to a corporate FTP server for later use.
Scheduled Automatic Reports
Configure webDAQ/100 for unattended report generation on any schedule you choose. Schedules can be based on time of day or desired intervals. Reports can be sent automatically via e-mail or FTP upload to a server. Scheduled reports saved on a secure server ensure your data against loss if your network goes down.
Multiple-user support for workgroups
webDAQ/100 can act as a workgroup server, with multiple users accessing data reports. It also can be configured to restrict access to some features using passwords. If a large number of users are to be supported, or high-volume report traffic is expected, detailed information is included on how to retrieve and mirror data on a corporate web server.
Command-line interface and programming
Every feature of webDAQ/100 can also be controlled from a command line with simple text commands. If you wish to create a custom program in C or BASIC to control webDAQ/100, just open a TCP/IP connection and use the command-line interface. Examples are included showing how to control webDAQ/100 from TestPoint, C, Visual BASIC, as well as Microsoft Excel macros.
webDAQ/100 alarms let you define up to two limit alarms per analog input channel, and a bit pattern alarm on the digital input channel. In addition, you can define up to four global alarms, which are any combination of channel alarms you choose. For example, if IN1 through IN4 are temperature input channels, you might define a high temperature limit alarm on each channel, and then define global alarm A to occur whenever any of these high temperatures is present.
Alarm conditions are tested once per second, in both IDLE and RUN modes.
The alarm status is displayed on the home page, next to each channel, with the global alarms shown on the right side.
Input channel alarms
Each analog input channel can have up to two different alarm conditions defined. You set these conditions in the Acquisition Setup page, by clicking on the channel in the terminal block diagram. For each alarm you can set:
The digital input channel can also have a single alarm condition defined, as a pattern of bits. This is useful if you have mechnical switches that should create alarm events:
Global alarms
There are four global alarms named A, B, C, and D. Each can be defined as occurring on any desired combination of individual channel alarms. You define the global alarms in the Acquisition Setup screen by clicking on the Setup Global Alarms button, which is on the right-hand side of the web page, below the triggering setup.
Digital Output on Alarm
You can optionally have your four global alarm conditions indicated in hardware on the digital output port of webDAQ/100. Simply turn on this option in the global alarm setup screen. Alarms A,B,C, and D correspond to digital output bits 1 through 4. Each bit will be set to 1 whenever the corresponding alarm condition is true. (Note that you cannot also configure the digital output bits for timed pattern generation - the two functions are incompatible with each other).
If you wish to connect indicator devices such as buzzers or lights to the digital output port of webDAQ/100, please keep in mind the current drive limit specifications of 15mA (source) and 24mA (sink). Technical support will gladly help you determine the best way to connect external devices to the DO port.
Triggering reports on alarm conditions
One of the most powerful features of the alarm software option is the ability to trigger scheduled reports on alarm events. You can have webDAQ/100 send you an email when an alarm occurs. Through features of your email system, you may even be able to have a wireless pager message occur when the email is sent (see your email system administrator to see how this might be configured on your particular email system).
Accessing alarm information through programs and the command-line interface
The programming interface of webDAQ/100 provides full support for setting up alarm conditions and checking their status.
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