Specifications

Chapter 8. Files
131
■ Restrictions on Input/Output of Data Files
No INPUT#, LINE INPUT#, or PRINT# statement or INPUT$ function can access data
files. To access data files, use a
PUT or GET statement.
■
Drive Defragmentation
During downloading, a delay of a few seconds (response delay from the BHT) may occur
according to the user area condition.
To eliminate the delay, defragment the drive for the size required for downloading before-
hand. Doing so will also reduce the device open time in communications. Defragmentation
before downloading is recommended.
If there is no specified size of the empty area in the drive, it is necessary to defragment the
whole empty area.
In complicated write operation, any of the following symptoms may be caused in units of a
few seconds. If such occurs frequently, defragment the drive.
- The beeper sound is prolonged.
- Keys do not work.
- No bar code entry is possible.
- Switching the LCD screen is delayed.
- No data can be received.
- Timeout by the
TIMEA/TIMEB/TIMEC is delayed.
The OUT statement may defragment the drive. In the OUT statement, you may specify the
size of the empty area to be defragmented in units of 4 kilobytes, starting with 4 kilobytes
up to the maximum size of the user area.
During drive defragmentation, user programs will be halted. Upon completion of defrag-
mentation, they will resume operation.
In the
OUT statement, you may also select whether a bar graph showing the progress of
defragmentation will be displayed on the LCD. The bar graph, if selected, will disappear
after completion of defragmentation and the previous screen will come back.
For details about defragmentation with
OUT statement, refer to Appendix D, "I/O Ports."