A Usb Device Does Not Operate - Mitsubishi Electric MELSEC iQ-R Series User Manual

34.16

A USB Device does not Operate

Check item
Is the USB device connected to a USB port?
Is the USB port in use broken?
Are conditions for using the USB device satisfied?
Is the interval for turning the power of the USB device OFF and ON short?
Does the current consumption of the USB device exceed the maximum value
of the bus power supply?
Are there any failures in the USB device in use?
Are any USB3.0 devices being used?
Is an error related to the power surge on the USB port displayed on the
Windows display?
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34.16 A USB Device does not Operate
Corrective action
Reconnect the connected USB device to the USB port again and check if the
device operates normally.
Connect the USB device to another USB port and check if the device operates
normally.
If the USB device operates normally, there may be a failure in the target USB
port.
If the USB device does not operate, there may be a problem with the usage of
the device.
Refer to the manual of the USB device in use and check if the usage is
correct.
Turn the power of the USB device OFF and then ON again after a sufficient
time has passed. After that, check if the USB device operates normally. (An
interval of at least five seconds is required for turning the power of this product
OFF and ON.)
The USB device may consume larger current than the maximum value of the
bus power supply.
When the USB device is connected to the USB 2.0 port, reconnect it to the
USB 3.0 port. Alternatively, connect the USB device via a self-powered USB
hub.
Check that there is no failure in the USB device.
If any, replace it.
Connect to a USB port supporting USB3.0.
The USB device may have a malfunction or the used USB devices may
consume larger current than the maximum value of the bus power supply.
• Disconnect the connected USB device, and check if an error has occurred
in the connected device. If there is an error, replace the USB device.
• Click the 'Power surge on the USB port' icon, then click the 'Reset' button in
the window appeared. If clicking the 'Close' button, the USB port stops
working until Windows is restarted.
• Reconnect the USB device. If the same error occurs even after
reconnecting the USB device, the USB device may consume larger current
than the maximum allowable current value of this product. Use a self-
powered USB hub.
■A 'Power surge on the USB port' error
The error may be continuously displayed or the popup may persist unless a
certain time has passed. The USB device can be used again by clicking the
'Power surge on the USB port' icon and then clicking the 'Reset' button in the
window appeared. If the popup persists even after a certain time has passed,
restart Windows to remove it.