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Chapter 14 Common Functions
The following shows the buffer memory used in the mark detection function.
(1) Mark detection setting parameters
Setting item
Setting details/setting value
Default
value
Buffer memory address
LD77MS2
LD77MS4
LD77MS16
Pr.800
Mark detection
signal setting
Set the external input signal (high speed input request) for
mark detection.
0
: Invalid
1 to 2 : External command signal of axis 1 to axis 2
(LD77MS2)
1 to 4 : External command signal of axis 1 to axis 4
(LD77MS4)
1 to 16 : External command signal of axis 1 to axis 16
(LD77MS16)
Fetch cycle: Power supply ON
0 54000+20k
Pr.801
Mark detection
signal
compensation
time
Set the compensation time such as delay of sensor.
Set a positive value to compensate for a delay.
-32768 to 32767[µs]
Fetch cycle: Power supply ON or PLC READY signal [Y0]
OFF to ON
0 54001+20k
Pr.802
Mark detection
data type
Set the target data for mark detection.
0 to 12 : Data type
-1
: Optional 2 word buffer memory
Fetch cycle: Power supply ON
0 54002+20k
Pr.803
Mark detection
data axis No.
Set the axis No. of target data for mark detection.
1 to 2
: Axis 1 to axis 2 (LD77MS2)
1 to 4
: Axis 1 to axis 4 (LD77MS4)
1 to 16
: Axis 1 to axis 16 (LD77MS16)
801 to 804 : Synchronous encoder axis 1 to axis 4
Fetch cycle: Power supply ON
0 54003+20k
Pr.804
Mark detection
data buffer
memory No.
Set the optional buffer memory No.
Set this parameter as an even number.
0 to 65534: Optional buffer memory
Fetch cycle: Power supply ON
0
54004+20k
54005+20k
Pr.805
Latch data range
upper limit value
Set the valid upper limit value for latch data at mark
detection.
-2147483648 to 2147483647
Fetch cycle: Power supply ON, PLC READY signal [Y0] OFF
to ON, or latch data range change request
0
54006+20k
54007+20k
Pr.806
Latch data range
lower limit value
Set the valid lower limit value for latch data at mark detection
-2147483648 to 2147483647
Fetch cycle: Power supply ON, PLC READY signal [Y0] OFF
to ON, or latch data range change request
0
54008+20k
54009+20k
Pr.807
Mark detection
mode setting
Set the continuous detection mode or specified number of
detection mode.
0
: Continuous detection mode
1 to 32 : Specified number of detection mode
(Set the number of detections.)
-1 to -32 : Ring buffer mode (Set the value that made the
number of buffers into negative value.)
Fetch cycle: Power supply ON or PLC READY signal [Y0]
OFF to ON
0 54010+20k
k: Mark detection setting 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 30: ...MEMO ...
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 485: ...9 25 Chapter 9 Major Positioning Control MEMO ...
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Страница 624: ...10 30 Chapter 10 High Level Positioning Control MEMO ...
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Страница 798: ...13 108 Chapter 13 Control Sub Functions MEMO ...
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Страница 899: ...16 15 Chapter 16 Troubleshooting MEMO ...
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