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Command Reference: Function Blocks
Section 6-5
Program Example
Limit switches 1 and 2 connect to Muting Signal 11 of the Muting function
block by using an AND function.
Note
Limit switches 1 and 2 are set to the dual channel complementary setting for
local inputs to evaluate the input data from the two switches.
Muting Sequence
1. In figure 1 above, N.O. limit switch 1 is OFF and N.C. limit switch 2 is ON.
In addition, the light curtain is not obstructed, so the Output Enable signal
is ON. Muting Signal 11, which inputs the dual channel complementary
signal for limit switches 1 and 2, goes OFF.
2.
As the robotic arm rotates, limit switch 1 goes ON and limit switch 2 goes
OFF as shown in figure 2. Muting Signal 11, which inputs the dual channel
complementary signal for limit switches 1 and 2, goes ON, so muting is en-
abled, and the Muting Status goes ON.
3.
At this point, the Output Enable signal is kept ON even if the light curtain is
obstructed so the operator can access the work platform.
4.
When the operator completes his task and the light curtain is unobstructed
as the robotic arm rotates, Muting Signal 11 goes OFF, the muting status
is cleared, and the Muting Status goes OFF.
■
Timing Chart
Muting
Signal 11
Output
Enable
AOPD
Input 1 (NC)
Muting
Status
AOPD
Input 1 (NC)
Muting time
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...