Algorithm, Algorithm -15 – National Instruments NI-Motion User Manual

Page 223

Advertising
background image

Chapter 14

Onboard Programs

© National Instruments Corporation

14-15

NI-Motion User Manual

Algorithm

Figure 14-8. Updating Velocity Based on ADC Channel Algorithm

Before you execute this program, set the operation mode of the axis to
velocity mode.

Set a label

Start move

Jump to label

Begin store

Put motion controller in store mode

End store

End the store mode

Read ADC

Read the analog channel, and

save value to an onboard variable

Jump to label

Jump to label if no update

required. Else continue.

Load velocity

Update the loaded velocity

with the new velocity

Get velocity value

Multiply ADC value by a

scale factor to calculate velocity

Check if value needs

to be updated

Update if last value is

different from current value

No

Yes

Advertising