viUnmapTrigger
Syntax
viUnmapTrigger(ViSession vi, ViInt16 trigSrc, ViInt16 trigDest);
Description
This operation can be used to map one trigger line to another. This operation is valid only on VXI Backplane (BACKPLANE) sessions.
This operation unmaps only one trigger mapping per call. If viMapTrigger was called multiple times on the same BACKPLANE resource and created multiple mappings for either trigSrc or trigDest, trigger mappings other than the one specified by trigSrc and trigDest remain in effect after this call completes.
Parameters
|
Name |
Dir |
Type |
Description |
|
vi |
IN |
ViSession |
Unique logical identifier to a session. |
|
trigSrc |
IN |
ViInt16 |
Source line used in previous map. |
|
trigDest |
IN |
ViInt16 |
Destination line used in previous map. |
|
Special Values for trgSrc Parameter |
|||
|
Value |
|
|
Action Description |
|
VI_TRIG_ECL0 - VI_TRIG_ECL1 |
|
|
Unmap the specified VXI ECL trigger line. |
|
VI_TRIG_PANEL_IN |
|
|
Unmap the controller's front panel trigger input line. |
|
VI_TRIG_PANEL_OUT |
|
|
Unmap the controller's front panel trigger output line. |
|
VI_TRIG_TTL0 - VI_TRIG_TTL7 |
|
|
Unmap the specified VXI TTL trigger line. |
|
Special Values for trgDest Parameter |
|||
|
Value |
|
|
Action Description |
|
VI_TRIG_ALL |
|
|
Unmap all trigger lines to which trigSrc is currently connected. |
|
VI_TRIG_ECL0 - VI_TRIG_ECL1 |
|
|
Unmap the specified VXI ECL trigger line. |
|
VI_TRIG_PANEL_IN |
|
|
Unmap the controller's front panel trigger input line. |
|
VI_TRIG_PANEL_OUT |
|
|
Unmap the controller's front panel trigger output line. |
|
VI_TRIG_TTL0 - VI_TRIG_TTL7 |
|
|
Unmap the specified VXI TTL trigger line. |
Return Values
|
Type ViStatus |
This is the function return status. It returns either a completion code or an error code as follows. |
|
Completion Codes |
Description |
|
VI_SUCCESS |
Operation completed successfully. |
|
Error Codes |
Description |
|
VI_ERROR_INV_LINE |
One of the specified lines (trigSrc or trigDest) is invalid. |
|
VI_ERROR_INV_SESSION |
The given session or object reference is invalid (both are the same value). |
|
VI_ERROR_NSUP_LINE |
One of the specified lines (trigSrc or trigDest) is not supported by this VISA implementation. |
|
VI_ERROR_NSUP_OPER |
The given vi does not support this function. |
|
VI_ERROR_RSRC_LOCKED |
Specified operation could not be performed because the resource identified by vi has been locked for this kind of access. |
|
VI_ERROR_TRIG_MAPPED |
The path from trigSrc to trigDest is not currently mapped. |
See Also
BACKPLANE resource description