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Chapter 13 Control Sub Functions
13.6 Absolute position system
The Simple Motion module can construct an absolute position system by installing the
absolute position system and connecting it through SSCNET /H.
The following describes precautions when constructing the absolute position system.
The configuration of the absolute position system is shown below.
Servomotor
Servo amplifier
Position command
Control command
Servo parameter
Simple Motion
module
Monitor data
PLC
CPU
OP
address
M
Back-up
Return of the present value
Battery
Position command
Control command
Servo parameter
Monitor data
Encoder
Fig. 13.33 Configuration of absolute position system
[1] Setting for absolute positions
For constructing an absolute position system, use a servo amplifier and a
servomotor which enable absolute position detection.
It is also necessary to install a battery for retaining the location of the OPR in the
servo amplifier. To use the absolute position system, select "1: Enabled (absolute
position detection system)" in "Absolute position detection system (PA03)" in the
amplifier setting for the servo parameters (basic setting).
Refer to each servo amplifier instruction manual for details of the absolute
position system.
Buffer memory address
LD77MS2/LD77MS4
LD77MS16
Absolute position detection system (PA03)
30103+200n
28403+100n
n: Axis No.-1
Summary of Contents for MELSEC-L Series
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Page 70: ...2 10 Chapter 2 System Configuration MEMO ...
Page 83: ...3 13 Chapter 3 Specifications and Functions MEMO ...
Page 103: ...3 33 Chapter 3 Specifications and Functions MEMO ...
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Page 111: ...3 41 Chapter 3 Specifications and Functions MEMO ...
Page 115: ...3 45 Chapter 3 Specifications and Functions MEMO ...
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 ...
Page 594: ...9 134 Chapter 9 Major Positioning Control MEMO ...
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 ...
Page 1036: ...Appendix 88 Appendices MEMO ...
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