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Power–On Mode

WebDAQ Series hardware can be configured to start automatically when power is applied, instead of requiring users to press the POWER button. This is useful if the WebDAQ is operating in a remote location and a power loss occurs. To enable this "power-on mode", remove the 2-pin jumper (labeled W1) from the WebDAQ circuit board.

When jumper W1 is removed, the device does not shutdown completely unless the power adapter is unplugged from the device or power source.

Perform the procedure below to remove jumper W1 from the WebDAQ circuit board and enable power-on mode.

Caution! The discharge of static electricity can damage some electronic components. Before removing the WebDAQ from its housing, ground yourself using a wrist strap or touch the computer chassis or other grounded object to eliminate any stored static charge.

  1. Power down the WebDAQ device and disconnect the power supply.
  2. On the rear panel, remove the Ethernet and power cables, and any external media connected.
  3. Remove the #6-32 ground screw.
  4. Remove the nut and washer from the EXT PWR connector.
  5. Remove the two front panel bezel screws and remove the front bezel.
  6. Slide out the circuit board with the front panel intact.
  7. Remove jumper W1 from the specified location shown below.
  8. Jumper W1 location
  1. Slide the circuit board back into the enclosure.
  2. Attach the front bezel and secure with the two bezel screws removed in step 5.
  3. Secure the power connector with the nut and washer (removed in step 4) to the power connector, and attach the ground screw, Ethernet and power cables, and any USB devices.

To automatically run a schedule when the WebDAQ powers up, enable the "Automatically start schedule on system startup" option on the Schedule Settings dialog box. If a power cycle occurs, the schedule will restart from the beginning (regardless of which job was running when the power was lost).
In order to retain the data from each schedule start, make sure to set the logging option for each job to "Append Date/Time to File Name" so that each run after power loss creates a new data file rather than overwriting the original file.

Enabling power-on mode with a complex or date/time triggered schedule
When running a complex or date/time-triggered schedule with both power-on mode and auto start schedule enabled, be aware that the schedule may not run automatically after a power cycle if the date or time trigger is no longer valid. In this case, the user may still access the WebDAQ remotely to modify the start settings.