Emerson EZMotion, User Manual

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96
EZMotion User/Programming Guide
www.controltechniques.com Revision: A8
PLS.#.Status parameter.
On Point
PLS.#.Status will be active when the selected source position is between the PLS.#.OnPosn and the PLS.#.OffPosn. Assume that
the PLS.#.Direction is set to "Both". When traveling in the positive direction and the feedback position executes the OnPosn, the
PLS.#.Status will activate. As the motor continues in the same direction, the PLS.#.Status will deactivate when feedback position
reaches or exceeds the OffPosn. If motor travel changes to the negative direction, the PLS.#.Status will activate when the feedback
position reaches the OffPosn, and will deactivate when it continues past the OnPosn. All on/off positions are defined in user units.
PLS.#.Status will be active if:PLS.#.OnPosn < Feedback Position < PLS.#.OffPosn
Off Point
PLS.#.Status will be active when the selected source position is between the PLS.#.OnPosn and the PLS.#.OffPosn. Assume that
the PLS.#.Direction is set to "Both". When traveling in the positive direction and the feedback position reaches the OnPosn, the
PLS.#.Status will activate. As the motor continues in the same direction, the PLS.#.Status will deactivate when feedback position
reaches or exceeds the OffPosn. If motor travel changes to the negative direction, the PLS.#.Status will activate when feedback
position reaches the OffPosn, and will deactivate when it continues past the OnPosn.
PLS.#.Status will be active if:PLS.#.OnPosn < Feedback Position < PLS.#.OffPosn
If using negative values for your OnPosn and OffPosn, the most negative value should go in the OnPosn parameter, and the least
negative value should go in the OffPosn.
If the PLS has a rollover point, and the OnPosn is greater than the OffPosn, the PLS will be active whenever the position feedback is
not between the On and Off positions, and in-active whenever the position feedback is between the two positions. However, the
PLS.#.Status will not turn on until it reaches the OnPosn the first time.All on/off positions are defined in user units.
Direction
This parameter specifies the direction of motion that a particular PLS output will function. If set to Both, the PLS will activate
regardless of whether the motor (or master motor) is moving in the positive or negative direction. If set to Plus, the PLS will activate
only when the motor is moving in the positive direction. If set to Minus, the PLS will activate only when the motor is moving in the
negative direction.
For example, a flying cutoff or flying shear application may use this feature to activate the PLS to fire the knife only when the axis is
moving in the positive direction.
Rotary Enable
This parameter is used to enable the RotaryRolloverPosn for this PLS.
Rollover Position
This parameter is the absolute position of the first repeat position for this PLS. When enabled it causes the PLS to repeat every time
this distance is passed. The repeating range begins at an absolute position of zero and ends at the RotaryRolloverPosn.
For example, in a rotary application a PLS could be setup with an OnPosn of 90 degrees and an OffPosn of 100 degrees. If the
RotaryRolloverPosn is set to 360 degrees the PLS would come on at 90, go off at 100, go on at 450 (360+90), go off at 460
(360+100), go on at 810 (2*360+90), go off at 820 (2*360+100), and continue repeating every 360 degrees forever.
8.5.2 Capture View
The Capture view allows the user to configure the various Capture object parameters. Figure 96 shows an example of the Capture
view.
Figure 96: Capture View
A detailed explanation of each of the Capture components is below.