Mitsubishi Electric MELSERVO-J4 Series Instruction Manual page 600

12. APPLICATION OF FUNCTIONS
12.2.2 Interrupt positioning function
The interrupt positioning function executes an operation by changing the remaining distance to the travel
distance that is set with [Pr. PT30] and [Pr. PT31] (Mark sensor stop travel distance) when MSD (Mark
detection) is turned on. The interrupt positioning function is enabled by setting [Pr. PT26] to "1 _ _ _".
(1) Parameter
Set the parameters as follows:
Item
Control mode selection
Mark detection function
selection
PI1 (Program input 1) Polarity
selection to PI3 (Program
input 3) Polarity selection
Mark sensor stop travel
distance
(lower three digits)
Mark sensor stop travel
distance
(upper three digits)
Mark detection range + (lower
three digits)
Mark detection range +
(upper three digits)
Mark detection range - (lower
three digits)
Mark detection range - (upper
three digits)
POINT
The interrupt positioning function is available with servo amplifiers with software
version B7 or later.
The interrupt positioning function can be used with the point table method and
the program method. However, the interrupt positioning function is disabled in
the following condition.
During home position return
During manual operation
During stop
During deceleration or stop with TSTP (Temporary stop/restart)
An error may occur at the mark sensor stop position depending on the droop
pulses of when MSD (Mark detection) is turned on and a minimum stopping
distance required for deceleration.
Parameter to be used
[Pr. PA01]
[Pr. PT26]
[Pr. PT29]
[Pr. PT30]
[Pr. PT31]
[Pr. PC66]
[Pr. PC67]
[Pr. PC68]
[Pr. PC69]
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Setting
Select a control mode.
_ _ _ 6: Positioning mode (point table method)
_ _ _ 7: Positioning mode (program method)
Set the mark detection function selection as follows:
1 _ _ _: Interrupt positioning function
Starts the interrupt positioning function at rising of MSD (Mark
detection).
The polarity of MSD (Mark detection) can be changed with
[Pr. PT29].
Starts the interrupt positioning function at rising of MSD
(Mark detection) if "_ _ x_" bit 3 of [Pr. PT29] is off.
Starts the interrupt positioning function at falling of MSD
(Mark detection) if "_ _ x_" bit 3 of [Pr. PT29] is on.
Set the lower three digits of the travel distance after the mark
detection.
The travel distance starts from the current position regardless
of the setting of absolute value command method or
incremental value command method.
Set the upper three digits of the travel distance after the mark
detection.
The travel distance starts from the current position regardless
of the setting of absolute value command method or
incremental value command method.
Set the upper and lower limits of the interrupt positioning
function. If a sign for the upper and lower differ, [AL. 37]
occurs. When the roll feed display is enabled, set this value
with the travel distance from the starting position.