Data I/O UniSite-xpi, User Manual, Page: 170 / 413

4. Commands
4-36 UniSite-xpi User Manual
• Upload: Use End-of-file Delimiter (Y,N)—When enabled, inserts an
end-of-file character following an uploaded file. The delimiter
character signals the host system that the upload is complete. During
an upload, an end-of-file character is transmitted to the host. To
invoke this feature, you must select this option and provide the
two-digit hexadecimal number of the ASCII character you want to
use as the end-of-file character. Select any value between 01 and 1F.
Note: Use this feature only if you are using a format with an end-of-text
character. It cannot, for example, be used for files stored in a binary data
translation format.
•
Upload End-of-file Delimiter
(1-1F)—Selects the two-digit
hexadecimal number of the ASCII character you want to use as the
end-of-file character in uploading data to a host computer. Select any
value between 01 and 1F.
•
Download: Use End-of-file Delimiter
(Y,N)—When enabled,
signals UniSite-xpi that the transmission of a particular file is
complete. During a download operation, characters after the last
record and before the end of the file would be ignored. If you wish to
use this feature, you must select this option and you must provide the
two-digit hexadecimal number of the ASCII character you want to
use as the end-of-file character. Any value between 01 and 1F may be
selected.
•
Download End-of-file Delimiter
(1-1F)—Selects the two-digit
hexadecimal number of the ASCII character you want to use as the
end-of-file character in downloading from a host computer. Any
value between 01 and 1F may be selected.
•
Upload Host Command
—Type the command you want to use to tell
the host system what to do with the data to be uploaded. The
command may be up to 58 characters long. You can use host
operating system commands on this line. For example, with UNIX,
you would enter an upload command such as cat > 27128.hex.
UniSite-xpi appends a return to the command.
•
Download Host Command
—Type the command you want to send
to the host system to initiate a file transfer download to UniSite-xpi.
The command may be up to 58 characters long. You can use host
operating system commands on this line. For example, with UNIX,
you would have a download command such as cat 27128.hex.
Transmit Pacing
Transmit pacing provides a time delay between characters sent to the
host by UniSite-xpi, affecting data uploaded from UniSite-xpi as well as
host commands sent by UniSite-xpi. If you encounter errors during
upload operations to a host, you must use the transmit pacing delay
feature to eliminate the errors. This will provide a character-by-character
delay to prevent data overrun on the host. This type of condition may
exist in spite of the use of hardware and/or software handshaking on the
host and UniSite-xpi. This condition is most likely to occur on hosts that
cannot accept incoming data fast enough at high baud rates.