7 CONTROL SUB FUNCTIONS
7.8 Function Related to Stop
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7
Step function
Step function is used to check each operation of the positioning control.
This function is used in debugging work for the major positioning controls.
The positioning operation in which the step function is used is called a step operation.
In step operations, the timing for stopping the control can be set. (The setting is called the step mode.) The control stopped by
a step operation can be continued by using Step start request.
Relation between the step function and various controls
The following table shows the relation between Step function and various controls.
: Set as required,
: Setting not possible
Step mode
In step operations, the timing for stopping the control can be set. (The setting is called the step mode.) (Step mode is set in
the control data [Cd.34] Step mode.)
Step mode is classified into the following two types.
■
Deceleration unit step
The operation stops at the positioning data requiring automatic deceleration. (A normal operation will be performed until the
positioning data No. requiring automatic deceleration takes its turn. Once the turn comes, the positioning data will be
executed, and the operation will automatically decelerate and stop.)
■
Data No. unit step
The operation automatically decelerates and stops for each positioning data. (Even in the continuous path control, the
automatic deceleration and the stop will be forcibly performed.)
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-/3-/4-axis linear
interpolation control
1-axis fixed-feed control
2-/3-/4-axis fixed-feed
control
2-axis circular
interpolation control
3-axis helical
interpolation control
1-/2-/3-/4-axis speed control
Step operation not possible
Speed-position switching control, Position-speed
switching control
Step operation possible
Other controls
Current value change
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
Summary of Contents for MELSEC iQ-R RD75P4
Page 1: ...MELSEC iQ R Positioning Module User s Manual Application RD75P2 RD75P4 RD75D2 RD75D4 ...
Page 2: ......
Page 13: ...11 MEMO ...
Page 19: ...17 CONTENTS INDEX 588 REVISIONS 592 WARRANTY 593 TRADEMARKS 594 ...
Page 498: ...496 13 PROGRAMMING 13 2 List of Labels Used ...
Page 503: ...13 PROGRAMMING 13 4 Program Example 501 13 ...
Page 514: ...512 13 PROGRAMMING 13 4 Program Example Restart program Parameter data initialization program ...
Page 515: ...13 PROGRAMMING 13 4 Program Example 513 13 Flash ROM write program Error reset program ...
Page 516: ...514 13 PROGRAMMING 13 4 Program Example Stop program ...
Page 565: ...APPENDICES Appendix 4 Operation Examples of When the Remote Head Module Is Mounted 563 A ...
Page 597: ......