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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
Содержание MELSEC-L Series
Страница 1: ...MELSEC L LD77MS Simple Motion Module User s Manual Positioning Control LD77MS2 LD77MS4 LD77MS16 ...
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Страница 70: ...2 10 Chapter 2 System Configuration MEMO ...
Страница 83: ...3 13 Chapter 3 Specifications and Functions MEMO ...
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Страница 140: ...4 22 Chapter 4 Installation Wiring and Maintenance of the Product MEMO ...
Страница 253: ...5 113 Chapter 5 Data Used for Positioning Control MEMO ...
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Страница 438: ...7 20 Chapter 7 Memory Configuration and Data Process MEMO ...
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Страница 899: ...16 15 Chapter 16 Troubleshooting MEMO ...
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