154
(5) Operation example of the rotation speed measurement function
The following figure shows an operation example with the following settings.
• CH
Time unit setting (Rotation speed measurement) (RWw18, RWw30): 0.01s
• CH
Moving average count (Rotation speed measurement) (RWw19, RWw31): 3
• CH
Number of pulses per rotation (RWw1A to RWw1B, RWw32 to RWw33): 1000
10000
T
T
T
T
T
5000
0
Time
CH Count enable command
(RY24, RY3C)
CH Time unit setting
(Rotation speed measurement)
(RWw18, RWw30)
CH Moving average count
(Rotation speed measurement)
(RWw19, RWw31)
CH Number of pulses per rotation
(RWw1A to RWw1B, RWw32 to RWw33)
CH Measured rotation speed value
(RWr1A to RWr1B, RWr32 to RWr33)
CH Update flag reset command
(Measured rotation speed value)
(RY2C, RY44)
CH Update flag reset completed
(Measured rotation speed value)
(RX2C, RX44)
CH Rotation speed measurement flag
(RWr20.b5, RWr38.b5)
CH Update flag
(Measured rotation speed value)
(RX2D, RX45)
3)
2)
1)
5)
0
3
1000
4)
0
6667
7667
6667
T: Rotation speed measurement time unit
Controlled by the high-speed counter module
Controlled by the program
OFF
OFF
0
OFF
OFF
ON
1
ON
ON
ON
Rotation speed
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