SmartAXIS Touch User's Manual 26-17
1 USB Flash Drives
26
External Memory Devices
1.9 Precautions
• USB flash drives have a limitation on the number of times they can be written to.
Regularly backup data on the USB flash drive.
• Never turn the power off or remove the USB flash drive while reading/writing to it. Otherwise, the data on the USB
flash drive may be destroyed. Should this occur, reformat the USB flash drive.
• Multiple USB flash drives cannot be used at the same time.
• Before turning off the power to the Touch or before removing the USB flash drive, set HMI Special Internal Relay
LSM18 to 1 and check that HMI Special Internal Relay LSM19 is 0.
• The message Saving USB flash drive appears while reading or until writing stops.
To resume reading/writing to the USB flash drive, re-insert it.
• If an unusable USB flash drive is inserted, the error message USB flash drive not available appears.
• Do not alter project files (ZNV format). Altered files cannot be used with Touch.
• Do not connect the USB flash drive to the Touch through a USB hub.
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