Toshiba 6F3B0253 - Manual (Page 265)

6F3B0253
Basic Hardware and Function
263
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 1000ms (10ms units).
The count value range is H0000 to HFFFF (16-bit).
Hardware condition
Count input (X000 and X001)
ON/OFF pulse width: 100
µ
s or more (max. 5KHz)
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. (10ms 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.