8 - 12
Chapter 8 OPR Control
8.2.5 OPR method (3): Count method 2)
The following shows an operation outline of the OPR method "count method 2)".
The "count method 2)" method is effective when a "zero signal" cannot be received.
(Note that compared to the "count method 1)" method, using this method will result in
more deviation in the stop position during machine OPR.)
Operation chart
1)
The machine OPR is started.
(The machine begins the acceleration designated in "
Pr.51
OPR acceleration time selection
", in the direction
designated in "
Pr.44
OPR direction
". It then moves at the "
Pr.46
OPR speed
" when the acceleration is
completed.)
2)
The machine begins decelerating when the near-point dog ON is detected.
3)
The machine decelerates to the "
Pr.47
Creep speed
", and subsequently moves at that speed.
4)
The command from the Simple Motion module will stop and the machine OPR will be completed when the
machine moves the movement amount set in "
Pr.50
Setting for the movement amount after near-point dog ON
"
from the near-point dog ON position.
Md.21 Machine feed value
t
V
ON
OFF
ON
OFF
ON
ON
OFF
0
OFF
Pr. 46 OPR speed
Pr. 47 Creep speed
Pr.50 Setting for the movement amount
after near-point dog ON
Md.34 Movement amount after near-point dog ON
Leave sufficient distance from the home
position to the near-point dog OFF.
Machine OPR start
(Positioning start signal)
OPR
Inconsistent
Value the machine moved is stored
Inconsistent
Md.34 Movement amount
after near-point dog ON
Md.20 Current feed value
Md.26 Axis operation status
Standby
Standby
Value of .
OP address
OPR request flag
( Md.31 Status : b3)
OPR complete flag
( Md.31 Status : b4)
1
Near-point dog
1
Fig. 8.8 Count method 2) machine OPR
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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