Omron OMNUC W Series Manual page 65

5 Parameter Settings
5.3.1 Unit Parameters
5
Electronic Gear Settings when Using a Rotary Table
If using a rotary table, first check the following specifications.
• Number of encoder pulses
• Gear ratio
The following system example shows the formulas when the command unit is set to 0.001°.
Encoder Motor
No. of encoder pulses=
2048 x 4
Moving distance of load per revolution (command unit) = 360°/ 0.001° = 36000
G2 = [Moving distance of load per revolution (command unit)] ×
[Gear Ratio (load rev.)] = 36000 × 1 = 36000
G1 = (Encoder pulses) × (Pulse multiplier) × [Gear Ratio (motor rev.)]
= 2048 × 4 × 3 = 24576
Data ranges are shown below.
G2 ≤ 10,000,000
G1 ≤ 10,000,000
0.01 ≤ G1/G2 ≤ 100
By storing the value of G2 in Pn811 and the value of G1 in Pn810, you can use the Elec-
tronic Gear function. These parameters are enabled when the power is turned ON. After you
have changed the parameter, execute the Unit Reset Command or the Reset Service to the
Identity Object.
Note Setting G1/G2 outside the range 0.01 to 100 may result in a misoperation. Make sure to set G1 and
G2 within this range.
R88D-WT
DeviceNet Unit
1
1
0.001 °
3 revolutions
1 revolution
5-12
G1
G2
0.001 °
Rotating load
360 ° /revolution