14 - 9
Chapter 14 Common Functions
14.4 External signal selection function
The "external signal selection function" is used to select from the following signals
when using the upper/lower limit signal and near-point dog signal.
• External input signal of servo amplifier
• External input signal via CPU (buffer memory of LD77MS)
When the external input signal via CPU (the buffer memory of LD77MS) is used, the
external input signal status of Simple Motion module can be operated by connecting
the limit switch to input module and by operating the buffer memory of sequence
program. When the external input signal via CPU (the buffer memory of LD77MS) is
used, operation is affected by the PLC scan time.
The details shown below explain about the "External signal selection function".
[1] Parameter setting details
[2] Precautions during parameter setting
[3] Control details
[4] Program example
[1] Parameter setting details
The setting details of the "External signal selection function" are shown in the
following table.
Setting item
Setting value
Setting details
Buffer memory address
LD77MS2
LD77MS4
LD77MS16
Pr.80
External
input signal
selection
1
Set the external signal selection.
1: External input signal of servo amplifier
2: Buffer memory of LD77MS
32+150n
n: Axis No.-1
Summary of Contents for MELSEC-L Series
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Page 83: ...3 13 Chapter 3 Specifications and Functions MEMO ...
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Page 140: ...4 22 Chapter 4 Installation Wiring and Maintenance of the Product MEMO ...
Page 253: ...5 113 Chapter 5 Data Used for Positioning Control MEMO ...
Page 342: ...5 202 Chapter 5 Data Used for Positioning Control MEMO ...
Page 438: ...7 20 Chapter 7 Memory Configuration and Data Process MEMO ...
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Page 485: ...9 25 Chapter 9 Major Positioning Control MEMO ...
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Page 624: ...10 30 Chapter 10 High Level Positioning Control MEMO ...
Page 656: ...11 32 Chapter 11 Manual Control MEMO ...
Page 690: ...12 34 Chapter 12 Expansion Control MEMO ...
Page 798: ...13 108 Chapter 13 Control Sub Functions MEMO ...
Page 866: ...14 68 Chapter 14 Common Functions MEMO ...
Page 884: ...15 18 Chapter 15 Dedicated Instructions MEMO ...
Page 899: ...16 15 Chapter 16 Troubleshooting MEMO ...
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