S Mode Functions
Chapter 5
GPIB-232CT User Manual
5-50
© National Instruments Corp.
Table 5-3. GPIB Error Conditions (continued)
!
Numeric
Symbolic
Value (n)
Value (s)
Description
!
!
12-16
—
Reserved
!
!
17
ECMD
Unrecognized
command
!
Table 5-4. Serial Port Error Conditions
!
Numeric
Symbolic
Value (n)
Value (s)
Description
!
!
0
NSER
No serial port error condition to
report
!
!
1
EPAR
Serial port parity error
!
!
2
EORN
Serial port overrun error
!
!
3
EOFL
Serial port receive buffer overflow
!
!
4
EFRM
Serial port framing error
!
A detailed description of the conditions under which each bit
in status is set or cleared can be found in Appendix B.
In general, the GPIB-232CT updates the first three status
variables at the end of each programming message. It updates
the fourth status variable,
count
, after a
cmd
,
rd
, or
wrt
function. The errors reported correspond to the previous
programming message. For example, if you call
wrt
and
then
stat s
, any errors returned to you correspond to errors
in the
wrt
programming message, not
stat
. However, if
status is returned in continuous mode, the status information
corresponds to the current programming message. For
example, suppose you call
stat c s
to set up continuous
