102
3 BASIC FUNCTION
3.7 Command unit select function [G] [WG]
Setting method
■
Setting with servo parameters
Use [Pr. PT01.2 Unit for position data] to set the command unit of position data.
■
Setting with object dictionary
For details on the objects, refer to the User's Manual (Object Dictionary).
[Feed (Obj. 6092h: 01h)] is automatically set in accordance with [Pr. PT01.2 Unit for position data]. Do not write a value to
[Feed (Obj. 6092h: 01h)]. Doing so will cause an error.
[Shaft revolutions (Obj. 6092h: 02h)] is automatically set. Do not write a value to [Shaft revolutions (Obj. 6092h: 02h)]. Doing
so will cause an error.
The values of [Feed constant (Obj. 6092h)] are as follows.
[Position actual value (Obj. 6064h)] is calculated from [Gear ratio (Obj. 6091h)] and [Feed constant (Obj. 6092h)] as follows.
If the unit is set to "degree", the result can be any value from 0 to 359999.
A value is automatically set in [SI unit position (Obj. 60A8h)] in accordance with "Unit for position data" of [Pr. PT01].
The values of [SI unit position] are as follows.
Servo parameter
Symbol
Name
Outline
PT01.2
**CTY
Unit for position data
Set the unit of position data.
2: degree
3: pulse (initial value)
Index
Sub
Object
Name
Description
6092
0
ARRAY
Feed constant
Travel distance per revolution of an output shaft
1
Feed
Travel distance
2
Shaft revolutions
Number of servo motor shaft revolutions
60A8h
VAR
SI unit position
SI unit position
A value is automatically set in accordance with "Unit for position data" of
[Pr. PT01.2 Unit for position data].
[Pr. PT01.2 Unit for position data]
Feed
Shaft revolutions
2: degree
360000
1
3: pulse
Servo motor encoder resolution
[Pr. PT01.2]
Value
2: degree
FD410000 (0.001 degree)
3: pulse
00000000 (pulse)
[Position actual value (Obj. 6064h)]
[Position actual internal value (Obj. 6063h)] × [Feed constant (Obj. 6092h)]
[Position encoder resolution (Obj. 608Fh)] × [Gear ratio (Obj. 6091h)]
=