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CHAPTER 11 MANUAL CONTROL
11
11.
4 Man
ual
Puls
e
G
enerat
or O
p
erat
ion
11.4
Manual Pulse Generator Operation
11.4.1
Outline of manual pulse generator operation
Create the program so that "[Cd.21] Manual pulse generator enable flag" is always set to "0" (disabled) when a manual pulse
generator operation is not carried out.
Mistakenly touching the manual pulse generator when the manual pulse generator enable flag is set to "1" (enable) can
cause accidents or incorrect positioning.
(1) Manual pulse generator operation
In manual pulse generator operations, pulses are input to the LD75 from the manual pulse generator. This
causes the same No. of input pulses to be output from the LD75 to the servo amplifier, and the workpiece is
moved in the designated direction.
The following shows an example of manual pulse generator operation.
1.
When the "[Cd.21] Manual pulse generator enable flag" is set to "1", the BUSY signal turns ON and
the manual pulse generator operation is enabled.
2.
The workpiece is moved corresponding to the No. of pulses input from the manual pulse
generator.
3.
The workpiece movement stops when no more pulses are input from the manual pulse generator.
4.
When the "[Cd.21] Manual pulse generator enable flag" is set to "0", the BUSY signal turns OFF
and the manual pulse generator operation is disabled.
*1
If the input from the manual pulse generator stops, the machine will decelerate to a stop within 90ms.
*2
The start complete signal does not turn ON in manual pulse generator operation.
(2) Restrictions
A manual pulse generator is required to carry out manual pulse generator operation.
t
0
OFF
ON
OFF
4.
3.
2.
1.
1
0
Manual pulse generator
operation stops
*1
BUSY signal
[XC, XD, YE, XF]
Manual pulse generator input
Start complete signal
*2
[X10, X11, X12, X13]
Manual pulse generator operation enabled
Cd. 21
Manual pulse
generator enable flag
Summary of Contents for MELSEC-L LD75D
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Page 267: ...265 CHAPTER 6 PROGRAM USED FOR POSITIONING CONTROL 6 6 4 Positioning Program Examples ...
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Page 272: ...270 Z ABRST1 instruction execution ...
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Page 685: ...683 APPENDICES A Appendix 1 Function Update Appendix 1 1 Function comparison Memo ...
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