Yaskawa Sigma-5 User Manual: Design and Maintenance - Linear Motors MECHATROLINK-III Communications Reference - Manual (Page 111)

4.4 Trial Operation
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4.4.3 Electronic Gear
The electronic gear enables the workpiece travel distance per reference unit input from the host controller. The
minimum unit of the position data moving a load is called a reference unit.
The number of divisions on the serial converter unit: 256
(1) Electronic Gear Ratio
Set the electronic gear ratio using Pn20E and Pn210.
The electronic gear ratio to be set can be calculated by the following equation:
When the Electronic Gear is Not Used When the Electronic Gear is Used
To move a workpiece 10 mm To move a workpiece 10 mm using reference units
Linear scale Linear scale
Reference unit: 1 μm
Linear
The scale pitch is 20 μm. Therefore,
10 × 1000 20 × 256=128000 refer-
ence units
128000 reference units are input.
The equation must be calculated at the
host controller.
÷
1 reference unit is 1 μm.
To move a workpiece 10 mm (10000 μm),
1 reference unit = 1 μm,
10000/1=10000 reference units.
Input 10000 reference units as reference input.
Pn20E
Electronic Gear Ratio (Numerator)
Classification
Setting Range Setting Unit Factory Setting When Enabled
1 to 1073741824 1 1 After restart Setup
Pn210
Electronic Gear Ratio (Denominator)
Classification
Setting Range Setting Unit Factory Setting When Enabled
1 to 1073741824 1 1 After restart Setup
Position
Position
Electronic gear ratio: =
A
B
Pn210
Pn20E
=
Linear scale pitch
Travel distance per reference unit Number of divisions of serial converter unit
Linear