Onboard Buffers - National Instruments NI-Motion User Manual

Onboard Buffers

Host
application
© National Instruments Corporation
Figure 14-12. Reading an Indirect Variable
Using indirect variables can be very useful in looping in onboard programs,
as well as dynamically changing the input values to functions.
You can use the memory on the NI motion controllers to create
general-purpose buffers to read and write data, as shown in Figure 14-13.
Reads data from the
buffer asynchronously
I/O
reaction
task
Reads the captured
position
Figure 14-13. Onboard Buffer Data Flow
14-25
Chapter 14
buffer in
Copies captured
position to buffer
External
trigger
Latches position
on external trigger
NI-Motion User Manual
Onboard Programs