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12 CONTROL AUXILIARY FUNCTIONS
12.7 Other functions
12.7.1 Step function
Zero point
return control
Main
positioning
control
Manual
control
: Set when required.
Other functions include the "step function", "skip function", "M code output function",
"teaching function", "command in-position function", "stepping motor mode function",
"acceleration/deceleration processing function" and "indirectly specification function".
Each function is executed by parameter setting or sequence program creation and
writing.
The "step function" is used to confirm each operation of the positioning control one by
one.
It is mainly used in debugging work for 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
continue" (to continue the control)" or restarted by setting "restart" in the "step start
information".
The details shown below explain about the "step function".
(1) Relation between the step function and various controls
(2) Step mode
(3) Step start information
(4) Using the step operation
(5) Control details
(6) Precautions during control
(7) Step function settings
(1) Relation between the step function and various controls
The following table shows the relation between the "step function" and various
controls.
Control type
Machine zero point return control
Data setting method zero point return
High-speed zero pint return control
1-axis linear control
2-axis linear interpolation control
Position
1-axis fixed-dimension feed control
control
2-axis fixed-dimension feed control
(interpolation)
2-axis circular interpolation control
Speed control
Speed/position changeover control
Current value change
Other
control
JUMP command
JOG operation
Manual pulse generator operation
: Setting not possible
Step function
12 - 53
MELSEC-A
Step applicability
Step operation not possible
Step operation possible
Step operation not possible
Step operation possible
Step operation not possible
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