From the IEC program

 

The following application example shows how to control the "Velocity" operating mode from the IEC program.

Control

Control the axis in the Velocity structure as follows:

  • To activate the operating mode, set xActivate to "TRUE".
  • Define the setpoints for lrVelocity, lrAcceleration, lrDeceleration.
  • To start the operating mode, set xStart to "TRUE".

Interface in the IEC Editor

Note:

When xStart has a value of "TRUE", the system accelerates with lrAcceleration. When the target speed is reached, you will receive the feedback xInVelocity = "TRUE" in the OUT structure. When xStart has a value of "FALSE", the system stops with lrDeceleration.

Trace recording

[1]

Velocity.In.xActivate

[2]

Velocity.In.xStart

[3]

Velocity.In.lrVelocity

[4]

Velocity.Out.xInVelocity

Information:

The speed curve is trapezoidal as the drive was moved without jerk time.