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FS 16i/18i/21i-MA/MB, FS 18i-MB5 Additional Manual Page 13

Additional Manual
【Reference counter capacity】
No.1821
Set amount of feed back pulsees (detection unit) per a table rotation.
NOTE) Set amount of (pulses per a table rotation / 8) as reference counter capacity
in the case of No.2275#0=0. But in this case eight grids are made every a
table rotation.
(Example of parameters setting)
【System construction】
Heidenhain rotary encorder RCN223
The least input increment is 1/10,000 degree
In the case that moving distance is 180 degree every a motor rotation
(deceleration ratio is 1/2)
Deceleration ratio between a table and a separate encorder = 1/1
【Setting parameters】
・Set No.1815#1=1 so that separate detector is available.
・Set No.2275#0=1、No.2275#1=1、No.2394=8 so that RCN223 is used.
・Parameters for flexible feed gear are calculated.
flexible feed gear (N/M) = (360 degree / 0.0001 degree) / 8,000,000 =9 / 20
So, No.2084=9, No.2085=20
・Amount of positional paluses is calculated.
amount of positional paluses = 100,000 * (1 / 2) = 50,000
Because this value exceeds input range (0~32767), following is considered
50,000 = 12,500 * 4 --> A = 12,500 , B=4
A is set for “amount of positional paluse” and B is set for “positional pulse
conversion coefficient”
No.2024＝12,500 , No.2185=4
・Reference counter capacity is calculated.
reference counter capacity = 360 degree / 0.0001 degree = 3,600,000
Edit
Apprv Desig.
12/12
Date
Design
Description
Data
FANUC Series 16i /18i /21i –MA/MB, 18i -MB5
Setting of parameters for rotary scale without
rotar
y data
A-78823E
03 Dec.02.2003 Out of #3 is added.
02 Feb.25.2003
M.tanaka
Out of #2 is altered / added.
Feb.20.2003
Sheet
Title
Draw
No.
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Contents Summary of FS 16i/18i/21i-MA/MB, FS 18i-MB5 Additional Manual

  • Page 1TECHNICAL REPORT NO.TMN 03/099E Date : Dec.03.’03 General Manager of Software Development Center FANUC Series 16i/18i/21i/20i/160i/180i/210i - MODEL A CONNECTION MANUAL(FUNCTION) FANUC Series 16i/18i/21i/160i/180i/210i - MODEL B CONNECTION MANUAL(FUNCTION) Setting of parameters for rotary scale with
  • Page 2FANUC Series 16i /18i /21i –MA/MB FANUC Series 18i –MB5 Setting of parameters for rotary scale without rotary data FANUC Series 16i /18i /21i –MA/MB, 18i -MB5 Title Setting of parameters for rotary scale without rotary data Draw No. A-78823E 03 Dec.02.2003 Out of #3 is added. 02 Feb.25.2003 M.tanaka
  • Page 3General This manual described the method of parameter setting when the rotary scale which has no rotary data (the number of rotation) is used, such as Heidenhain rotary scale RCN723 or Futaba rotary scale FRR902L3DB. We have improved our software, and removed the problems when a rotary scale without
  • Page 4Details 1. Difference in rotary axial type and movable range rotary axial type movable range required parameters reference rotary axis B type under one rotation No.1817#3 No.1867 or 1868 chapter 1.1 rotary axis B type over one rotation No.1815#0 chapter 1.2 rotary axis A type － No.1815#6 chapter 1.3
  • Page 51.1. In the case of a rotary axis B type whose movable range is under one rotation In the case of a rotary axis whose movable range is under one rotation, it is possible to know its position under one rotation, even if a rotary scale without rotary data (the number of rotation) is used. The scale da
  • Page 6An uncontinuous point of scale data Before using this function it is necessary to know the position of the uncontinuous point in following process. 1. Perform a reference position return with No.1817#3=0. 2. Record machine coordinate value after moving to one side of movable range. 3. Turn the CNC o
  • Page 7#7 #6 #5 #4 #3 #2 #1 #0 1817 SCRx [Data type] Bit axis SCRx Specifies whether to convert scale data so that rotary axis B type is available for the axis using a rotary scale without rotary data 0: not to convert 1: to convert NOTE ・ It is necessary to turn the CNC off after setting this parameter. ・
  • Page 8As for the axis with this parameter = 0, the parameter (No.1861) for all axes is available. NOTE ・ It is necessary to turn the CNC off after setting this parameter. ・ In FANUC Series 16i /18i /21i –A, there is not this parameter. Use the parameter (No.1867) for all axes. ・ This parameter is availabl
  • Page 91.2. In the case of a rotary axis B type whose movable range is over one rotation As for an axis whose movable range is over one rotation and its rotary scale which has no rotary data , for example, 30.000 degree and 390.000 degree have completely same scale data though their position is different f
  • Page 101.3. In the case of a rotary axis A type In the case of a rotary axis A type, when machine position passes 0 degree or the shift value per one rotation (360 degree or the parameter No.1260), the data for the reference position (the parameter No.1860, 1861) is renewed so that following up at power up
  • Page 112. Method of using Heidenhain rotary scale RCN223, 723 and 220 RCN223, 723 and 220 are the detectors which save absolute position only within one rotation. And the former two detectors (RCN223 and 723) are the detectors which have eight million pulses every one rotation. There are following cautions
  • Page 12NOTE Rotary data of RCN223, 723 and 220 can be saved during separate detector I/F unit turned on. But it is forgotten as soon as it turned off. It is necessary to set parameters in order to clear rotary data because it is undefined according to the place where separate detector I/F unit is turned of
  • Page 13【Reference counter capacity】 No.1821 Set amount of feed back pulsees (detection unit) per a table rotation. NOTE) Set amount of (pulses per a table rotation / 8) as reference counter capacity in the case of No.2275#0=0. But in this case eight grids are made every a table rotation. (Example of parame