ValueMotion to NI-Motion Conversion

NI-Motion VI

ValueMotion to NI-Motion Conversion

To aid in converting a ValueMotion application to NI-Motion, the following table lists each VI in the ValueMotion API and gives the nearest NI-Motion VI. Some ValueMotion VIs are related to two NI-Motion VIs. In these cases, the first VI is the closest match to the ValueMotion VI, but the second NI-Motion VI, in combination with the first, is required to completely mimic the functionality of the original ValueMotion VI.

Refer to the individual VIs in both the ValueMotion and NI-Motion VI online help for detailed information about the functional and syntactic differences.

ValueMotion VI Name

NI-Motion Equivalent

Acquire Samples	Acquire Trajectory Data
Clear Return Data Buffer	Flush Return Data Buffer
Communicate	Read Return Data Buffer
Configure Master Slave	Configure Gear Master
	Enable Gearing
Enable 4A Limit Switch Inputs	Enable Limits
	Enable Home Inputs
Enable Breakpoint	Enable Breakpoint Output
	Configure Breakpoint
Enable Trigger Inputs	Wait on Condition
Find Home	Find Reference Home
Find Index	Find Reference Index
Get Board Type	Get Motion Board Information
Get Motion Board Info	Get Motion Board Information
Initialize Controller	Initialize Controller
Kill All	Stop Motion
Kill Motion	Stop Motion
Load Acceleration	Load Acceleration/Deceleration
Load Acceleration Factor	Not supported
Load Breakpoint	Load Breakpoint Position
Load Breakpoint Repeat Period	Load Breakpoint Modulus
Load Derivative Gain	Load Single PID Parameter
Load Derivative Period	Load Single PID Parameter
Load Following Error	Load Following Error
Load Integral Gain	Load Single PID Parameter
Load Integral Limit	Load Single PID Parameter
Load Proportional Gain	Load Single PID Parameter
Load Rotary Counts	Load Position Modulus
Load RPM	Load Velocity in RPM
Load RPS/s	Load Accel/Decel in RPS/sec
Load Slave Offset	Configure Gear Master (Note 1)
Load Steps and Line/Rev	Load Counts/Steps per Revolution
Load Steps/Sec	Load Velocity
Load Steps/Sec^2	Load Acceleration/Deceleration
Load Target Position	Load Target Position
Load Velocity	Load Velocity
Multi-Axis Start	Start Motion
Multi-Wait	Wait for Move Complete
Read 24 Dig I/O	Read I/O Port
Read 4A Limit Switch Status	Read Limit Status
	Read Home Input Status
Read 4A Port Status	Read Communication Status
	Read per Axis Status
Read A/D Converter	Read ADCs
Read Encoder	Read Encoder Position
Read I/O Port	Read High-Speed Capture Status
Read per Axis H/W Status	Read per Axis Status
Read Position	Read Position
Read RPM	Read Velocity in RPM
Read Steps/Sec	Read Velocity
Read Velocity	Read Velocity
Read RDB	Read Return Data Buffer
Reset Position Counter	Reset Position
Set 24 Dig Outputs	Set I/O Port MOMO
Set 24 Dig Port C Dir	Set I/O Port Polarity
Set 4A Limit Sw Input Polarity	Set Limit Input Polarity
	Set Home Input Polarity
Set Base Velocity	Load Base Velocity
Set Breakpoint/Trigger Link	Jump to Label on Condition
Set Direction	Set I/O Port Polarity
Set I/O Port Output	Set Inhibit MOMO
Set I/O Port Polarity & Direction	Configure High-Speed Capture
Set Loop Mode	Set Stepper Loop Mode
Set Position Mode	Set Operation Mode
Set Step Output Mode	Configure Stepper Output
	Configure Inhibit Outputs
Set Stop Mode	Stop Motion
Start Motion	Start Motion
Stop Motion	Stop Motion
Trigger Buffer Delimiter	Wait on Condition
Trigger I/O Port #	Run Program
Trigger Prestore	Begin Program Storage
	End Program Storage
Velocity Adjust	Load Velocity Override (Note 2)
Wait For Move Complete	Wait for Move Complete

Note 1

The same functionality as Load Slave Offset can be achieved using relative gearing, which is configured in Configure Gear Master.

Note 2

Velocity Adjust uses a delta change, and Load Velocity Override uses a percentage change.

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