147
SECTION 6
Defining the Origin
This section explains the origin search and origin return operations. With memory operation, if positions are designated by
absolute values, or if the ABSOLUTE MOVEMENT command is executed by direct operation, it will be essential to
execute an origin search and establish the origin before positioning.
Origin return is used to return the axis to the origin from any given location. Any location can be made the origin by using
the PRESENT POSITION PRESET command to change the present position to 0. Refer to
6-6 Present Position Preset
for
information on resetting the present position.
6-1
Outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
148
6-2
Origin Search Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
149
6-3
Data Settings Required for Origin Search. . . . . . . . . . . . . . . . . . . . . . . . . . . .
150
6-3-1
Beginning Words of Memory Areas . . . . . . . . . . . . . . . . . . . . . . . . .
150
6-3-2
Axis Parameter Area. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
151
6-3-3
Operating Memory Area. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
152
6-3-4
Allocation of Operating Data Areas
(Supported for Unit Version 2.3 or Later) . . . . . . . . . . . . . . . . . . . .
153
6-4
Origin Search Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
153
6-4-1
Operation Pattern Settings for Origin Search . . . . . . . . . . . . . . . . . .
153
6-4-2
Details of Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
153
6-4-3
Operation Mode Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
157
6-4-4
Origin Search Operation and Origin Detection Direction Settings .
162
6-4-5
Operation Pattern With Origin Compensation . . . . . . . . . . . . . . . . .
167
6-5
Origin Search Timing Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
169
6-5-1
Without Origin Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
169
6-5-2
With Origin Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
170
6-5-3
Origin Search Deceleration Stop . . . . . . . . . . . . . . . . . . . . . . . . . . .
172
6-5-4
Emergency Stop of Origin Search . . . . . . . . . . . . . . . . . . . . . . . . . .
173
6-6
Present Position Preset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
174
6-6-1
Outline of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
174
6-6-2
Beginning Words of Memory Areas . . . . . . . . . . . . . . . . . . . . . . . . .
174
6-6-3
Operating Memory Area Allocation and Operating Data Area Settings
174
6-6-4
Timing Chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
175
6-7
Origin Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
175
6-7-1
Operating Memory Area Allocation and Operating Data Area Settings
175
6-7-2
Timing Chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
176
6-8
Z-phase Margin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
177
6-8-1
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
177
6-8-2
Calculating the Z-phase Margin (Example) . . . . . . . . . . . . . . . . . . .
177
Summary of Contents for CJ1W-C113 - REV 02-2008
Page 2: ...CJ1W NC113 213 413 133 233 433 Position Control Units Operation Manual Revised February 2008 ...
Page 3: ...iv ...
Page 13: ...xiv ...
Page 15: ...xvi ...
Page 19: ...xx ...
Page 27: ...xxviii Conformance to EC Directives 6 ...
Page 43: ...16 Control System Principles Section 1 7 ...
Page 47: ...20 Basic Procedures Section 2 ...
Page 139: ...112 Examples of Parameter Settings Section 4 9 ...
Page 173: ...146 Transferring Data with CX Position Section 5 7 ...
Page 223: ...196 Sample Program Section 7 7 ...
Page 259: ...232 Sample Program Section 8 10 ...
Page 293: ...266 Easy Backup Function Ver 2 0 or later Section 9 11 ...
Page 369: ...342 Reading Error Information with CX Position Section 11 8 ...
Page 385: ...358 Common Parameter Area Appendix C ...