WebDAQ 316

The WebDAQ series are primarily stand-alone loggers, with data collected to its local non-volatile memory storage. To receive relatively-live data from the currently running job over the network, the Rest API can be used by a programmer. We provide Rest API examples in LabVIEW, C#, VB, and Python. The REST API is considered fully documented now, but note that the logger must still be configured manually. So while a 3rd party application (such as a LabVIEW app) cannot configure the logger, it can start, receive data from, and stop a logger.

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Thank you for your question. The digital I/O on the WebDAQ 316 operates asynchronous to the thermocouple input channels. Therefore, because of the difference in their clock signals concurrent data logging of both the thermocouple inputs and digital inputs cannot not be supported. At present, the digital I/O is supported in the form of a trigger event or alarm condition (input) or an alarm action (output).

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Thanks for the question. The easiest way to bring WebDAQ data into a 3rd party application today is to use the Server Message Block (SMB) Protocol to read the data file on the WebDAQ as it is being updated. SMB access is a Beta feature right now, so please let us know if you would like to try this and we will send you a firmware image to install on your device. In the future, MCC will document the subsection of the WebDAQ REST API that will allow applications to access data directly from the DAQ service running on the WebDAQ CPU. After releasing this API, MCC will provide examples with source code for accessing WebDAQ data from various programming languages and applications. Please let us know what 3rd party application or programming language you would like to support and we will evaluate the effort needed to support this through the REST API.

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The WebDAQ 316 logger is self-contained, with no expansion option. Multiple WebDAQ 316 loggers can be configured to start at the same time, with data from each displayed on a separate tab on the same web browser.

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One way to access a WebDAQ remotely is via VPN. Alternatively, you could assign it an IP address that is on the internet. Such an IP address can be obtained through router configuration (port forwarding of HTTP port 80) or by plugging the WebDAQ directly into a cable modem.

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Yes; remove the onboard jumper W1 to start the WebDAQ whenever the power adapter is plugged in and receiving power. If a power loss occurs, the device will restart automatically when power is restored. You may also want to configure the Schedule to start on power up so it runs when power is restored. Refer to http://kb.mccdaq.com/KnowledgebaseArticle50733.aspx for more information.

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One correction: In the high-speed mode, the sample rate is 75 S/s per channel. Still, the sampling is not simultaneous (one A/D converter is shared across all channels).

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The supported sample rate for the WebDAQ 316 is not simultaneous across all channels. It is an aggregate sample rate.

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