Emerson EZMotion User Manual page 146

Similarly, if the index is so short that it never reaches the On Point, the Index.#.PLSStatus will never activate.
Registration Tab Parameters
The following parameters are only used if Registration is selected as the Index Type.
Analog or Sensor Radio Buttons
Select one of these radio buttons to determine what signal will be used as your registration trigger.
If Sensor is selected, a source must be assigned to the Index.#.SensorTrigger Typically a proximity sensor is wired to a hardware
input, and therefore a module or drive input source is assigned to the Index.#.SensorTrigger, but any source can be used.
If Analog is selected, one of the analog signals must be selected in the analog list box. Available selections are Analog In, Torque
Command, or Torque Feedback. Then a comparison operator must be selected from the operator list box. Available selections are >
(greater than) and < (less than). Last, an analog value must be entered for comparison.
Registration to Analog Input Value
If Analog is selected, the value of the drive Analog Input is used as the registration signal.
When the value of the analog input reaches a value that satisfies the comparison operator, the sensor trigger will activate. Units for
the registration value will match the units configured on the Analog Inputs screen when Analog In is selected.
Registration Offset
The incremental distance the motor will travel after a valid registration sensor or analog limit value has been detected. This is a
signed parameter; so if an index is travelling in the negative direction, the offset needs to be negative and continue in the same
direction. If the registration offset is zero or less than the decel distance shown on the calculations tab, the motor will decelerate at
the programmed rate and then back up to the specified offset distance from the trigger position.
Enable Registration Window Check Box
This check box enables (if selected) the Registration Sensor Valid Window. When active, only registration marks that occur inside
the registration window are seen as valid.
Window Start
This parameter defines the start of the Registration Sensor Valid Window relative to start position of this index. This is an unsigned
value and is relative only to starting position of this index. Index direction does not affect this parameter. The Registration Window
Start position (or distance) should be less than the Registration Window End position. If a registration sensor is seen outside of this
window (not between the WindowStart and WindowEnd positions) then it will be ignored.
Window End
This parameter defines the end of the Registration Sensor Valid Window relative to start position of this index. This is an unsigned
value and is relative only to starting position of this index. Index direction does not affect this parameter. The Registration Window
End position (or distance) should be greater than the Registration Window Start position. If a registration sensor is seen outside of
this window (not between the WindowStart and WindowEnd positions) then it will be ignored.
Example:
Index 0 is defined as a Registration type of index. The user wants the index to run at velocity for 10 Revs, or until the Torque
Feedback reaches 50% continuous torque and then continue for another 0.5 Revs.
In the Limit Distance parameter, enter 10.0.
On the registration tab, select the Analog radio button.
In the analog list box, select Torque Command
In the comparison operator list box, select ">"
In the analog value parameter, enter 50 (Units are established on the User Units view)
In the Registration Offset parameter, enter 1.5
This index would accelerate up to its' target velocity, and run at speed until one of the following:
The Limit Distance is approaching, and the index decels down to zero velocity, completing the move at the Limit Distance. At this
point, the Index.#.LimitDistHit source would activate.
Or,
The Torque Command reaches or exceeds 50% continuous, and the index continues at speed before decelerating to zero velocity at
the registration point plus the Registration Offset distance.
If the Registration Offset distance is in the opposite direction from the move, or is so short that the motor cannot stop in the specified
distance at the programmed deceleration rate, the motor will decelerate with the programmed ramp, and then back-up to the
specified position (registration point + the Registration Offset).
Index Sources and Destinations
Sources
Index.AnyCommandComplete - Active when any index motion command is completed. If a stop is activated before the index has
completed, this destination will not activate. Deactivated when any new index command is initiated.
Index.#.Accelerating - This source is active while an index is accelerating to its' target velocity. Once the index reaches the target
velocity, or begins to decelerate, the Index.#.Accelerating source will deactivate.
Index.#.AtVel - This source activates when the target index velocity is reached. If Feedrate override is changed or FeedHold is
activated AtVelocity shall remain active. Index.#.AtVel will deactivate at the start of any deceleration or acceleration. During a
synchronized index, this source could be active even without any motor motion if the master axis stops.
Index.#.Command Complete - The Index.#.CommandComplete source will activate when the specific index completes its
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EZMotion User/Programming Guide
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