Control Loop Update Period

Sets the PID control loop and trajectory generator update rate. For stepper axes, this parameter also determines how often the step generator is updated. There is a direct correspondence between the number of enabled axes and the fastest update rate allowed as shown in the following table:

The fastest update rate is achievable only when all axes are single-feedback servo axes and no extra encoders are enabled.

Note  You cannot set an update rates that is too fast for the number of enabled axes, stepper outputs, and/or encoders.

You can set the update rate slower than the maximum. This is useful in many applications to scale the effective range of the PID control loop parameters and/or to improve stability. Refer to the descriptions for each control loop parameter for more information about the PID parameters affected by the update rate.