5 Counter mode
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5.2.10 Prescale
This function is to set and display calculated unit for actual length, liquid, position, etc. It is called
“prescale value” for measured length, liquid, or position, etc per 1 pulse. For example, when
moving L, the desired length to be measured, and P, the number of pulses per 1 revolution of a
rotary encoder, occurs, prescale value is L/P.
Positioning control by counter and encoder
[Diameter (D) of pulley connected with encoder= 22mm,
the number of pulses by 1 rotation of encoder=1,000]
Prescale value =
π × Diameter (D) of pulley (D)
The number of pulses by 1 rotaiton of encoder
=
3.1416×22
1000
= 0.069mm/pulse
Set decimal point [DP] as [-----.-] mode, prescale decimal point [SClDP] as [---.---] and
prescale value[SCL] parameter as [
)069
] at function setting mode. It is available to control
conveyer position by 0.1mm unit.
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