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Command Reference: Function Blocks
Section 6-5
■
Position detection
In this application, the workpiece is mounted on a machine turntable sur-
rounded by a guard fence. The operator can disable the light-interruption sig-
nal of the light curtain safety function in order to set a workpiece on the
turntable when he is on the opposite side of the machine’s dangerous area.
Block Diagram
Machine’s Dangerous Area is on the Operator’s Side (Figure 1):
Machine’s Dangerous Area is on the Opposite Side of the Operator (Figure 2):
Note
Set the dual channel mode for local input in the NEA1-series Controller to
dual channel complementary.
Light curtain
Light curtain
IN0
IN1
NE1A-series
Controller
ON
OFF
Operator
Work platform
Guard fence
Limit switch 1
(N.O. contact)
Limit switch 2
(N.C. contact)
Light curtain
Light curtain
IN0
IN1
NE1A-series
Controller
OFF
ON
Operator
Work platform
Guard fence
Limit switch 1
(N.O. contact)
Limit switch 2
(N.C. contact)
Summary of Contents for NE1A-SCPU01 - 07-2009
Page 3: ...iv...
Page 9: ...x TABLE OF CONTENTS...
Page 11: ...xii...
Page 15: ...xvi...
Page 70: ...35 Installation Section 3 1 Top Top Bottom Bottom...
Page 72: ...37 Installation Section 3 1 3 1 3 Dimensions and Weight Dimensions NE1A SCPU01 V1...
Page 85: ...50 Wiring Section 3 2...
Page 123: ...88 Explicit Message Communications Section 4 7...
Page 141: ...106 Safety Outputs Section 5 4...
Page 257: ...222 Connection Status Tables Section 10 8...
Page 261: ...226 NE1A series Controller Replacement Section 11 2...
Page 264: ...229 Appendix A Local Input and Test Output Setting Example Local Output Setting Example...
Page 266: ...231 Appendix A Programming Example Local Input and Test Output Setting Example...
Page 267: ...232 Appendix A Local Output Setting Example...
Page 269: ...234 Appendix A Programming Example Local Input and Test Output Setting Example...
Page 270: ...235 Appendix A Local Output Setting Example...
Page 273: ...238 Appendix A Local Input and Test Output Setting Example Local Output Setting Example...
Page 275: ...240 Appendix A Programming Example Local Input and Test Output Setting Example...
Page 276: ...241 Appendix A Local Output Setting Example...
Page 289: ...254...
Page 293: ...258 Index...