Connecting And Disconnecting Usb Mass Storage Class-Compliant Device; How To Connect A Usb Device; How To Disconnect A Usb Device - Mitsubishi Electric MELSEC iQ-R Series User Manual

6.4
Connecting and Disconnecting USB Mass Storage
Class-compliant Device
Connect or disconnect a USB Mass Storage Class-compliant device by following the procedure below. Failure to do so may
cause data corruption in the USB Mass Storage Class-compliant device.
Change the MODE/SELECT switch operation to "USB UNMOUNT" or "SD/USB UNMOUNT" before
disconnecting the USB Mass Storage Class-compliant device. (Page 41 Switch Operation)

How to connect a USB device

How to disconnect a USB device

A USB Mass Storage Class-compliant device can also be unmounted with a user program using C Controller
module dedicated functions (CCPU_UnmountMemoryCard).
Precautions
Do not perform the following operations while accessing the files in a USB Mass Storage Class-compliant device. Doing so
may result in data corruption in the USB Mass Storage Class-compliant device or file system error.
• Turning the power of the system OFF
• Turning the power OFF and ON, or resetting the C Controller module
• Unmounting/ejecting the USB Mass Storage Class-compliant device
6 PROCEDURE BEFORE OPERATION
40

6.4 Connecting and Disconnecting USB Mass Storage Class-compliant Device

1.
(1)
2.
3.
(2)
1.
2.
(1)
3.
(2)
Connect a connector of USB Mass Storage Class-compliant device
or USB cable to the USB connector (1). Firmly insert the connector
to prevent it from falling out.
The USB RDY LED (2) keeps flashing until the USB Mass Storage
Class-compliant device is ready to be used.
Once the USB RDY LED (2) turns ON, the USB Mass Storage Class-
compliant device can be used.
Check that no USB Mass Storage Class-compliant device is
accessed.
Hold the MODE/SELECT switch in the SELECT position to unmount
the USB Mass Storage Class-compliant device. The USB RDY LED
(1) is flashing, which indicates that process of unmounting USB
Mass Storage Class-compliant device is in progress, and later upon
successful completion, the LED turns OFF.
Disconnect the USB Mass Storage Class-compliant device or USB
cable that is inserted to the USB connector (2).