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Chapter 9 Major Positioning Control
(2) The following shows a start time chart.
[LD77MS4 operation example]
Positioning start signal
PLC READY signal
READY signal
Start complete signal
BUSY signal
Positioning complete signal
9003
V
t
Error detection signal
50000
Start of data No. 9003
Data No. during positioning execution
Address during positioning execution
Md.20 Current feed value
Cd.3 Positioning start No.
50000
[Y10]
[Y0]
[X0]
[X10]
[XC]
[X14]
[X8]
Cd.9 New current value
(Note): Refer to Section 3.3 for input/output signal of LD77MS16.
Fig. 9.21 Changing to a new current value using the current value changing start No. (No. 9003)
(3) Add the following sequence program to the control program, and write it to the
PLC CPU.
Current value changing
Store new current feed value in D106 and D107
[LD77MS4 program example]
X8
Y10
X10
DX0C
0
<Pulsate current value changing command>
<Write current value changing to the LD77>
<Write the current value changing (9003)>
<Execute current value changing>
PLS
M103
SET
Y10
X4A
<Turn OFF positioning start signal>
X10
Y10
K1500
K9003
K1
RST
Y10
M103
11
D106
K1
H0
K1506
DTOP
H0
TOP
28
Summary of Contents for MELSEC-L Series
Page 2: ......
Page 30: ...MEMO ...
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 ...
Page 107: ...3 37 Chapter 3 Specifications and Functions MEMO ...
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 ...
Page 440: ...MEMO ...
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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