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8.1.4
S etting and Operation of J Point Control
1 2 3 B
J-point control operates until the start contact of J-point positioning turns ON after the operation of the
positioning unit starts, and the next positioning control will start when the start contact of J-point
positioning turns ON.
J-point control can be used for single-axis control only. Note that it cannot be used for interpolation
control.
Also, the speed can be changed during the J point control. For changing the speed, turn the J point
speed change contact ON after changing the following parameters in the parameter setting area.
J point control code
-
J point acceleration time
-
J point deceleration time
-
J point target speed
-
Note:
The control code, acceleration (deceleration) time and target speed at the start of the J point control are
activated by each setting of a specified table.
The J point control code, J point acceleration (deceleration) time and J point target speed are enabled
when changing the speed of the J point control.
Precautions when performing J point control
A speed change is possible during J-point control, but impossible during acceleration or deceleration.
The speed change while accelerating (decelerating) is ignored, and the speed change is performed after
the unit becomes a constant speed state.
Set the positioning unit to increment mode to implement P-point control, C-point control, or E-point
control with positions specified after J-point control is implemented.
Speed control is performed while the positioning unit is in J-point control, in which case, be sure to input
the amount of movement for positioning with a value that can secure a target constant-speed area.
The example below is a case of single-axis control with the positioning unit installed in the slot 0. The
movement amount setting uses an increment method in pulses.
8-12
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