Omron FQM1-MMP21 用户手册
176
Pulse Outputs
Section 7-6
Formula:
Actual frequency = Clock frequency
Actual frequency = Clock frequency
÷ INT (clock frequency/target frequency)
Note INT (clock frequency/target frequency) is the dividing ratio.
The difference between the target frequency and the actual frequency
increases at higher frequencies. The following tables shows examples for a
clock frequency of 20 MHz.
increases at higher frequencies. The following tables shows examples for a
clock frequency of 20 MHz.
7-6-7
One-shot Pulse Output Function
The one-shot pulse output function turns ON the output only for a specified
time between 0.01 and 9,999 ms. Use the STIM(980) instruction to start the
pulse output (turn the output from OFF to ON). After the time specified in
STIM(980) has elapsed, the pulse output is automatically turned OFF (in the
hardware).
time between 0.01 and 9,999 ms. Use the STIM(980) instruction to start the
pulse output (turn the output from OFF to ON). After the time specified in
STIM(980) has elapsed, the pulse output is automatically turned OFF (in the
hardware).
Target frequency (Hz)
Actual output frequency
952,382 to 1,000,000
1,000,000
909,092 to 952,381
952,381
869,566 to 909,091
909,091
.
.
.
.
.
.
.
.
.
.
487,806 to 500,000
500,000
476,191 to 487,805
487,805
465,117 to 476,190
476,190
.
.
.
.
.
.
.
.
.
.
198,021 to 200,000
100,806
196,079 to 198,020
198,020
194,176 to 196,078
196,078
.
.
.
.
.
.
.
.
.
.
49,876 to 50,000
50,000
49,752 to 49,875
49,875
4,929 to 49,751
49,751
.
.
.
.
.
.
.
.
.
.
402
402
401
401
400
400
Dividing circuit
Output pulses
(Actual output frequency)
Integer dividing ratio set
according to the target
frequency set by user.
according to the target
frequency set by user.
Clock-generated pulses
(one of four possible settings)
(one of four possible settings)