Emerson Control Techniques FM-4 Reference Manual page 200

FM-4 Programming Module Reference Manual
Home Reference
Home.#.Reference
This parameter determines how the reference position is determined. The parameter can have one of three different values:
'Sensor', 'Marker', 'Sensor then Marker'. When the home reference is 'Sensor' the rising edge of the 'Home Sensor' input
function is used to establish the reference position. When the home reference is 'Marker' the risi n g edge of the motor encoder' s
marker channel is used to establish the reference position. When the home reference is 'Sensor then Marker' the reference
position is established using the first marker rising edge after the Home Sensor input function goes active.
Sensor Trigger
Home.#.SensorTrigger
This destination is usually a sensor input used as a reference for the home. This event is only used if the home is defined by
sensor or by sensor and marker.
Specified Offset
Home.#.SpecifiedOffset
The specified offset parameter allows the user to specify an exact offset relative to the Home Reference. The commanded
motion will stop at exactly the offset distance away from the sensor or the marker as specified.
Time Base
Home.#.TimeBase
The time base selects either realtime, which allows velocities, acceleration and deceleration to be based on real time, or
synchronized, which allows for an external synchronization signal.
Velocity
Home.#.Vel
This parameter sets the target velocity for all of moves in the home. The sign determines the home direction. Positive numbers
cause motion in the positive direction and negative numbers cause motion in the negative direction in search of the home
sensor.
Any Command Complete
Index.AnyCommandComplete
This source is 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 index command is initiated.
Index Profile Limited
Index.ProfileLimited
For timed indexes, if the values for Max. Velocity, Max. Acceleration and Max. Deceleration are such that the distance cannot
be covered in the specified time, the Index.ProfileLimited flag will activate when the index is initiated. The
Index.ProfileLimited flag will remain active until cleared using the Index.ResetProfileLimited assignment or program
instruction. In this situation, the index will still operate, but the time will be extended. In other words, the profile will be
performed using the maximum values and still cover the specified distance, but not in the specified time.
Index Reset Profile Limited
Index.ResetProfileLimited
If a timed index was not completed in the specified time, the Index.ProfileLimited source will activate.
Index.ResetProfileLimited is used to clear the ProfileLimited flag and acknowledge that the index was not completed in the
specified time. This can be activated through an assignment, or through a user program. This function is edge-sensitive, so
holding Reset Profile Limited active will not prevent ProfileLimited from activating.
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