8 CONTROL SUB FUNCTIONS
8.8 Functions Related to Stop
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Step function
The "step function" is used to confirm each operation of the positioning control one by one.
It is used in debugging work for major positioning control, etc.
A positioning operation in which a "step function" is used is called a "step operation".
In step operations, the timing for stopping the control can be set. (This is called the "step mode".) Control stopped by a step
operation can be continued by setting "step continues (to continue the control)" in the "step start information".
Relation between the step function and various controls
The following table shows the relation between the "step function" and various controls.
: Set when required, : Setting not possible
Step mode
In step operations, the timing for stopping the control can be set. This is called the "step mode". (The "step mode" is set in the
control data "[Cd.34] Step mode".)
The following shows the two types of "step mode" functions.
■Deceleration unit step
The operation stops at positioning data requiring automatic deceleration. (A normal operation will be carried out until the
positioning data requiring automatic deceleration is found. Once found, that positioning data will be executed, and the
operation will then automatically decelerate and stop.)
■Data No. unit step
The operation automatically decelerates and stops for each positioning data. (Even in continuous path control, an automatic
deceleration and stop will be forcibly carried out.)
Control type Step function Step applicability
Home position return
control
Machine home position return control Step operation not possible
Fast home position return control
Major positioning control Position control 1-axis linear control Step operation possible
2 to 4-axis linear interpolation control
1-axis fixed-feed control
2 to 4-axis fixed-feed control (interpolation)
2-axis circular interpolation control
3-axis helical interpolation control
1 to 4-axis speed control Step operation not possible
Speed-position switching control, Position-speed switching control Step operation possible
Other control Current value changing
JUMP instruction, NOP instruction, LOOP to LEND Step operation not possible
Manual control JOG operation, Inching operation Step operation not possible
Manual pulse generator operation
Expansion control Speed-torque control
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