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Chapter 12
Synchronization
RTSI Implementation on the Motion Controller
Host can read/update
the buffers asynchronously
NI-Motion User Manual
You also can create a software trigger by writing to the RTSI lines directly
from software.
You can route position breakpoints and encoder pulses using the RTSI bus
to trigger other devices. You also can configure data and image acquisition
devices to trigger high-speed captures on the NI motion controllers using
the RTSI bus.
You can configure an onboard buffer on the motion controller and use the
buffered high-speed capture or breakpoint functionality to synchronize the
motion application with data or image acquisition.
As shown in Figure 12-21, the I/O reaction task automatically re-enables
the breakpoints or high-speed captures on the NI 7350 motion controller.
On NI 7340 motion controllers, you must write an onboard program or use
the host to perform the same re-enabling tasks.
Write the captured position to the buffer
or read the position from the buffer and enable
the breakpoint. You must create the buffer.
*NI 7350 only
Generate trigger (breakpoint)
at a given position
Figure 12-21. RTSI Implementation on the Motion Controller
12-38
To/From
data/image
acquisition device
Latches position on
external trigger
(high-speed capture)
ni.com
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