Yaskawa MP2000 Series I/O Module User Manual - Manual (Page 120)

4.5 Electronic Gear Function
4.5.4 Precautions When Using Electronic Gears
120
4.5.4
Precautions When Using Electronic Gears
When using electronic gears, make sure that the After Convert Incremental Pulse (Number of Incremental Pulses After
Conversion) (IL††08) is not outside the range for double integers (-2147483648 to 2147483647). If it is outside this
range, counter parameters after conversion, such as the After Convert Incremental Pulse (IL††08), Current Count
Value after Conversion (IL††0A), and PI Latch Value (IL††0C), may not be correctly reported.
„
Conditions to Fit within Range
The following is the conditional expression for the After Convert Incremental Pulse (IL††08) to fit within the range
for double integers.
* Ts: Scan time setting
The workpiece travel distance per pulse can be found using the following formula.
* 1. No.10, No.11, No.12, and No.14 are fixed parameters.
* 2. Multiplication value of fixed parameter No. 3, Pulse Counting Mode Selection. (For example, for A/B Pulse
(Quadrature), the multiplication value is 4.)
Maximum frequency of input pulse (Hz) ×
Ts * (ms)
× Workpiece travel distance per pulse (reference units/pulse) ≤ 2147483647
1000(ms )
Workpiece travel distance per pulse (reference units/pulse)
=
No.10 *1 Travel Distance Per Machine Rotation
×
No.12 *1 Machine Gear Ratio
No.14 *1 Encoder Resolution (Pre Quadrature) × Multiplication *2 No.11 *1 Encoder Gear Ratio