Mitsubishi Electric MELSEC-L LD75D, Руководство пользователя

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12.7
Other Functions
Other functions include the "step function", "skip function", "M code output function", "teaching function", "command in-
position function", "acceleration/deceleration processing function", "pre-reading start function", "deceleration start flag
function" and "stop command processing for deceleration stop function". Each function is executed by parameter
setting or program creation and writing.
12.7.1
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 continue" (to continue the control) in the "step start information".
The details shown below explain about the "step function".
• Relation between the step function and various controls
• Step mode
• Step start information
• Using the step operation
• Control details
• Control precautions
• Setting method
(1) 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
Control type Step function Step applicability
OPR control
Machine OPR control

Step operation not possible
Fast OPR 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
