Data I/O UniSite-xpi, User Manual

Page: 168 / 413

4. Commands
4-34 UniSite-xpi User Manual
Disk and Download operations. During Output to Disk and Upload
operations, setting the I/O Address Offset to FFFFFFFF is the same as
setting the I/O Address Offset to 0, since no offset is added to the I/O
addresses sent out.
To load your file absolutely, set the I/O Address Offset to 0. The data
is stored at the addresses specified in the data file.
This parameter defaults to FFFFFFFF.
• I/O Timeout —Limits the time, from 0 to 99 seconds, UniSite-xpi
waits for a data transfer to begin. A value of 0 disables the timeout. A
value of 0 should not be used for data formats which don’t use a start
code and an end code because these formats need the timeout
enabled in order to terminate a normal data transfer. Formats which
fall into this category include codes 5, 6, 7, 9, 11, 13, 16, and 96.
• Upload Wait —Sets the period that UniSite-xpi waits before it begins
sending data to the host computer after the host upload command is
sent. The range of this parameter is 0 to 99 seconds.
• Transmit Pacing —Specifies the time-delay to insert between
characters transmitted to a host during an upload. See the note about
transmit pacing at the end of this section for more information.
• Download Echoing (Y,N)—Displays the data being downloaded.
This may slow down UniSite-xpi in receiving data and is not
recommended for high baud rates, such as 9600 and above.
Download echoing may not be used with the binary formats.
• Output Record Size —Specifies the number of data bytes contained
in each data record during upload. The range of this parameter is 0 to
256 bytes. Some formats have fixed record lengths for which this
parameter does not apply.
• Number Of Nulls —Sets the number of null characters sent between
each record in a data file after a carriage return and line feed. The
range of this parameter is 0 to 254 nulls. Entering 255 specifies no
nulls and suppresses the line feed.
• Instrument Control Code —Specifies how the data transfer will be
controlled. Selecting 0 specifies regular XON/XOFF handshaking,
selecting 1 or 2 specifies a special handshaking sequence (see the
Translation Formats chapter for more information).
• Fill Memory Option (N,D,U)—Specifies what data user memory
will be filled with before downloading begins. This option is used for
Download Data and Input from Disk operations. If you select
N
(none), user memory will not be changed and whatever is in user
memory will be overwritten by the downloaded data. If you select
D
(default), user memory will be filled with the data appropriate to
initialize unused locations to the unprogrammed state for the device
type selected. If you select U (user defined), then user memory will be
filled with whatever you specify in the Fill Data option.