HELP
An object that writes data to and reads data
from an instrument using transaction
statements.

USE
Use Direct I/O to output and input a variety
of encodings and formats to instruments.

LOCATION
I/O ==> Instrument ==> Direct I/O

OPEN VIEW PARAMETERS
Direct I/O Action:
* READ:  Reads data from an instrument using
the specified encoding and format.
* WRITE:  Writes data to an instrument using
the specified encoding and format.
* EXECUTE:  For an HP-IB instrument, sends
either a "selected device," "clear go to
local," "remote," or "group execute trigger"
command.  For a serial instrument, sends
"break" or "reset."  For a GPIO instrument,
sends "reset."
* WAIT:  Waits the specific number of seconds
before executing the next transaction.  For
an HP-IB instrument, wait until the bitwise
AND of the serial poll response with the mask
is either zero (ALL CLEAR) or non-zero (ANY
SET).

For GPIO instruments only, the READ action
allows IOSTATUS and the WRITE action allows
IOCTL.

SEE ALSO
Advanced HP-IB, Component Driver, Instrument,
and State Driver.

"Using Instruments" in "Using HP VEE",
chapter 5.
