November 1985
National Instruments
DTAS 2
The DTAS bit specifies whether the GPIB-MAC has
detected a device trigger command. The DTAS bit is set
whenever the GPIB-MAC as a Listener, detects the Group
Execute Trigger (GET) command has been sent by another
Controller. The DTAS bit is cleared in status at the start of
any subsequent programming message.
DCAS 1
The DCAS bit specifies whether the GPIB-MAC has
detected a device clear command The DCAS bit is set
whenever the GPIB-MAC detects the Device Clear
command has been sent by itself or by another Controller, or
whenever the GPIB-MAC as a Listener detects the Selected
Device Clear (SDC) command has been sent by itself or by
another Controller. The DCAS bit is cleared in
at the
start of any subsequent programming message.
In addition to the above, the following situations also affect the bits
in
status:
* A
to the
function clears the following bits:
END
REM
TACS LACS DTAS DCAS
* A call to
affects bits other than those listed here
according to the rules explained for each bit.
GPIB Error Codes
When the ERR bit is set in
status,
a GPIB or a serial port error has
occurred. The error code is indicated by
gpib-error or
error.
The following paragraphs describe the
gpib-errors in
detail
100
APPENDIX B STATUS INFORMATION
