User`s guide

52 Agilent VISA User’s Guide
3 Programming with VISA
Event Attribute Description A
P
Data Type Range
VI_ATTR_EVENT_TYPE Unique logical identifier of the
event.
R
O
ViEventTy
pe
VI_EVENT_IO_
COMPLETION
VI_ATTR_STATUS Return code of the
asynchronous I/O operation that
has completed.
R
O
ViStatus N/A
VI_ATTR_JOB_ID Job ID of the asynchronous
operation that has completed.
R
O
ViJobId N/A
VI_ATTR_BUFFER Address of buffer used in an
asynchronous operation.
R
O
ViBuf N/A
VI_ATTR_RET_COUNT Actual number of elements that
were asynchronously
transferred.
R
O
ViUInt32 0 to FFFFFFFF
h
VI_ATTR_OPER_NAME The name of the operation
generating the event.
R
O
ViString N/A
Table 14 VXI Mainframe Backplane (BACKPLANE) Resource Events
VI_EVENT_TRIG
Notification that a trigger interrupt was received from the backplane. For VISA, the only triggers that can
be sensed are VXI hardware triggers on the assertion edge (SYNC and ON trigger protocols only).
Event Attribute Description A
P
Data Type Range
VI_ATTR_EVENT_TYPE Unique logical identifier of the
event.
R
O
ViEventTy
pe
VI_EVENT_TRIG
VI_ATTR_RECV_TRIG_I
D
The identifier of the triggering
mechanism on which the
specified trigger event was
received.
R
O
ViInt16 VI_TRIG_TTL0 to
VI_TRIG_TTL7;
VI_TRIG_ECL0 to
VI_TRIG_ECL1
VI_EVENT_VXI_VME_SYSFAIL
Notification that the VXI/VME SYSFAIL* line has been asserted.
Table 13 GPIB Bus Interface (INTFC) Resource Events (continued)