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Chapter 6 Sequence Program Used for Positioning Control
[2] Starting by inputting external command signal
When starting positioning control by inputting the external command signal, the
start command can be directly input into the Simple Motion module. This allows
the variation time equivalent to one scan time of the PLC CPU to be eliminated.
This is an effective procedure when operation is to be started as quickly as
possible with the start command or when the starting variation time is to be
suppressed. To start positioning control by inputting the external command signal,
set the "data required to be set" and then turn ON the external command signal.
Restrictions
When starting by inputting the external command signal, the start complete signal
will not turn ON.
Data required to be set
Set the following data in advance.
Setting item
Setting
value
Setting details
Buffer memory address
Pr.42
External command
function selection
0
Set to "0: External positioning start".
62+150n
n: Axis No.-1
: Set the external command signal (DI) in "
Pr.95
External command signal selection
" at LD77MS16 use.
Refer to Chapter 5 "Data Used for Positioning Control" for details on the setting details.
Set "
Cd.3
Positioning start No.
" and enable "
Cd.8
External command valid
" with a
program. Then, turn ON the external command signal (DI).
Setting item
Setting
value
Setting details
Buffer memory address
LD77MS2
LD77MS4
LD77MS16
Cd.3
Positioning start No.
1 to
600
Set the positioning data No. to be started.
1500+100n 4300+100n
Cd.8
External command valid
1
Set to "1: Validates an external command.". 1505+100n
4305+100n
n: Axis No.-1
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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