295
CHAPTER 6 PROGRAM USED FOR POSITIONING CONTROL
6
6.
5 Pr
ogram Det
a
ils
(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 LD75. This allows the variation time equivalent to one scan time of the CPU module 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.
(a) Restrictions
When starting by inputting the external command signal, the start complete signal [X10, X11, X12, X13] will not
turn ON.
(b) Data required to be set
To execute positioning start with the external command signal, set parameter ([Pr.42]) beforehand, and validate
the "external command signal" with the "External command function valid setting program (program No. 5)".
Refer to
Page 93, CHAPTER 5 for the information on detail settings.
(c) Starting time chart
Setting item
Setting
value
Setting details
Buffer memory address
Axis 1
Axis 2
Axis 3
Axis 4
[Pr.42]
External command function
selection
0
Set to "0: External positioning start".
62
212
362
512
[Cd.8]
External command valid
1
Set to "1: Validate external command".
1505
1605
1705
1805
0
V
t
1(00)
1
0
1
Operation pattern
Positioning data No.
[Y10]
[Y0]
[X0]
[X10]
[XC]
[X14]
[X8]
Positioning start signal
PLC READY signal
LD75 READY signal
Start complete signal
BUSY signal
Positioning complete
signal
Error detection signal
External command signal
Pr.42
Cd.3
Cd.8
External command
function selection
Positioning start No.
External command
valid
Dwell time
Содержание MELSEC-L LD75D
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Страница 47: ...45 CHAPTER 2 SYSTEM CONFIGURATION 2 2 1 General Image of System 1 When connected to a CPU module ...
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Страница 685: ...683 APPENDICES A Appendix 1 Function Update Appendix 1 1 Function comparison Memo ...
Страница 738: ...736 Memo ...
Страница 806: ...804 5 LD75D2 Unit mm 6 LD75D4 Unit mm 45 4 90 4 95 4 45 45 DIN rail center 45 4 90 4 95 4 45 45 DIN rail center ...
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