FS 16/18-MB/TB/MC/TC Additional Manual Page 2

Additional Manual

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1. Outline

The interval of each reference marks of distance coded linear scale are variable.

Accordingly, if the interval is determined, the absolute position can be determined.

The CNC measures the interval of reference marks by axis moving of short distance

and determines the absolute position. Consequently the reference position can be

established without moving to reference position.

Mark 1 Mark 2 Mark 1 Reference mark 2Reference mark 1

20.00

20.02

10.04

10.02

Fig.1 Example of distance coded linear scale

* This is a optional function.

2. Specifications

2.1 Procedure for Reference Position Establishment

(1) Select the JOG mode, and set the manual reference position return selection

signal ZRN to "1".

(2) Set a direction selection signal(+J1,-J1,+J2,-J2,…) for a target axis.

(3) The axis is fed at a constant low speed (reference position return FL feedrate

specified by parameter (No.1425) setting).

(4) When a reference mark is detected, the axis stops, then the axis is fed at a

constant low speed again.

(5) Above (4) is executed repeatedly until two or three or four reference marks are

detected. And absolute position is determined and reference position

establishment signal (ZRF1,ZRF2,ZRF3,＋ _…) turns to "1". The number of

reference marks to be detected is defined by parameter No.1802.

The axis does not stop and reference position establishment is proceeded even if the

feed axis direction selection signal (+J1,-J1,+J2,-J2,…) turns to "0" between step (2)

and (5).

The timing chart for this procedures is given below.

2/15

A- 61209EN

DRAW.No.

FANUC Series 16/18-MB/TB/MC/TC

FANUC Series 16i/18i/21i-MA/TA/MB/TB

Specifications of Distance Coded

Linear Scale Interface

Title

Descriptions of products are altered.

Straightness compensation is supported.

First edition

DESCRIPTION

A.Fukumoto

DESIGNE

02.09.24

00.06.20

95.11.14

DATE

EDIT.

T.Endo

H.Kochiya

Contents Summary of FS 16/18-MB/TB/MC/TC Additional Manual

Page 1FANUC Series 16/18-MB/TB/MC/TC FANUC Series 16i/18i/21i-MA/TA/MB/TB Distance Coded Linear Scale Interface Specifications CONTENTS 1. Outline .............................................. 2 2. Specifications ................................... 2 3. Parameter .........................................
Page 21. Outline The interval of each reference marks of distance coded linear scale are variable. Accordingly, if the interval is determined, the absolute position can be determined. The CNC measures the interval of reference marks by axis moving of short distance and determines the absolute position. Co
Page 3JOG ZRN +J1 Reference mark ZRF1 Feedrate FL rate FL rate FL rate Fig.2 Timing chart for reference position establishment 2.2 This function for simple synchronous axis 09 The function is available for only FS16i/18i-MA/MB 13 When the function is applied for simple synchronous axis, the following cond
Page 4(Example of 3 points measurement system) Scale end Reference mark Master axis (1) (2) (3) Start point End Point Slave axis (a) (b) (c) In the above example, the following sequence is executed. 09 a. When the reference mark (1) of the master axis is detected, both master axis 09 and slave axis stop.
Page 52.4 Note (1) In the following cases, the reference position establishment described in "2.1 09 Procedure for Reference Position Establishment" is not executed and the axis 09 moves to reference position. 09 (a) The reference position is already established and REF mode is selected and 09 feed axis d
Page 6(4) In the following cases, this function does not perform. (a) Parameter No.1821(mark1 interval) or No.1882(mark2 interval) is "0". (b) The setting value of parameter No.1821 and No.1882 are the same. (c) Parameter No.1821 value ≥ No.1882 value*２ or No.1882 value ≥ No.1821 value*２ (5) Distance code
Page 7(6) A difference of parameter No.1821 and No.1882 must be more than 4. 08 Example) 08 When the scale, which is that mark1 interval is 20.000mm and mark2 interval is 08 20.004mm, is used on IS-B machine : 08 When the detection unit of 0.001mm is selected, parameter No.1821 and No.1882 08 must be set
Page 8(9) Straightness compensation function 12 When the reference point establishment of moving axis is executed after the 12 establishment of compensation axis, the compensation axis is moved by 12 straightness compensation amount when the reference point of moving axis is 12 established. 12 * The simul
Page 93. Parameters #7 #6 #5 #4 #3 #2 #1 #0 1815 DCRx DCLx OPTx Data type : Bit axis type OPTx Position detector 0 : A separate pulse coder is not used. 1 : A separate pulse coder is used. (When a distance coded linear scale use, set "1".) DCLx Separate pulse coder 0 : A distance coded linear scale is not
Page 10#7 #6 #5 #4 #3 #2 #1 #0 1818 RF2x RFSx Data type : Bit axis type RFSx When the conditions are as follows, the axis moves until the 09 reference position is established and : 09 0 : the axis moves to the reference point. 09 1 : sequence complete without moving to the reference point. 09 (Conditions)
Page 111821 Reference counter size for each axis Data type : Two-word axis Unit of data : Detection unit Valid data range : 0 to 99999999 Set the interval of reference mark 1 of distance coded linear scale. 1882 Interval of reference mark 2 Data type : Two-word axis Unit of data : Detection unit Valid data
Page 121883 Distance between scale zero and reference position (1) Data type : Two-word axis Unit of data : Detection unit Valid data range : -99999999 to 99999999 06 1884 Distance between scale zero and reference position (2) Data type : word axis 06 Unit of data : Detection unit*100,000,000 06 Valid data
Page 13[ Example of parameter setting ] When IS-B and millimeter machine and using a scale figured below : Scale zero Plus direction Reference point Minus direction A B Mark1=Mark2 Mark1 Mark2 Mark1 Mark1 Mark2 Mark1 Mark2 Mark1 Mark2 Mark1 20.000 19.980 9.940 10.060 9.960 10.040 9.980 10.020 5.000 20.000m
Page 14#7 #6 #5 #4 #3 #2 #1 #0 1817 SCPx 11 Data type : Bit axis type 11 SCP The direction of scale zero. 11 0： Minus side (reference point is located on the plus side based on the 11 scale zero) 11 1： Plus side (reference point is located on the minus side based on the 11 scale zero) 11 This parameter is
Page 154. Alarm Number Message Contents 090 REFERENCE RETURN INCOMPLETE In case of distance coded linear scale I/F, the actual interval of reference marks is different from parameter (No.1821,1882) setting value. 5220 REFERENCE POINT ADJUSTMENT In case of distance coded linear scale I/F, 06 MODE the refere