User`s guide

19 Configuration Parameters
Double buffer parameter changes
Use a double buffer for parameter tuning. This enables parameter tuning
so that the process of changing parameters in the target application uses
adoublebuffer.
Settings
Default: off
On
Changes parameter tuning to use a double buffer.
Off
Suppresses double buffering of parameter changes in the target
application.
Tips
• When a parameter change request is received, the new value is compared
to the old one. If the new value is identical to the old one, it is discarded,
and if different, queued.
• At the start of execution of the next sample of the real-time task, all queued
parameters are updated. This means that parameter tuning affects the
task execution time (TET), and the very act of parameter tuning can cause
a CPU ov erload error.
• Double buffering leads to a more robust parameter tuning interface, but
it increases Task Execution Time (TET) and the higher probability of
overloads. Under typical conditions, k eep double b uffering off (default).
Command-Line Information
Param ete r: xpcDblBuff
Type: string
Value:
'on' | 'off'
Default: 'off'
See Also
xPC Target O ptions
19-20