Basic Hardware and Function
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8. Special I/O Functions
8.3.2
Single phase speed-counter
Function
This function counts the number of changes of the count input from OFF to ON during the
every specified sampling time. The count value in a sampling time is stored in the hold
value register.
This counter operation is enabled while the soft-gate is ON. When the soft-gate is OFF,
the hold value is cleared to 0.
The setting range of the sampling time is 10 to 1000 ms (10 ms units).
The count value range is H0000 to HFFFF (16-bit).
Hardware condition
Count input (X000 and X001)
ON/OFF pulse width: 100
m
s or more (max. 5 kHz)
Related registers
SW16: Function selection. Refer to section 8.1.
Function
Register/device
Remarks
Channel 1
Channel 2
Count input
X000
X001
(Note 2)
Sampling time
SW18
SW20
Data range: 1 to 100 (Note 1)
Hold value
SW22
SW23
Data range: H0000 to HFFFF
Soft-gate
S240
S248
Operation is enabled when ON
Note 1) The setting data range of the sampling time is 1 to 100. (10 ms multiplier)
Note 2) When both channels are used, X000 and X001 cannot be used as normal
input devices. However, if either one channel is used, the input for unused
channel can be used as normal input devices.
Interrupt assignment
No interrupt function.
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