One-Shot Pulse Output Function - Omron HOME SECURITY SYSTEM - MOTION SENSOR FQM1-CM001 Operation Manual

Pulse Outputs
7-6-7

One-shot Pulse Output Function

176
Clock-generated pulses
(one of four possible settings)
Formula:
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.
Target frequency (Hz)
952,382 to 1,000,000
909,092 to 952,381
869,566 to 909,091
.
.
.
487,806 to 500,000
476,191 to 487,805
465,117 to 476,190
.
.
.
198,021 to 200,000
196,079 to 198,020
194,176 to 196,078
.
.
.
49,876 to 50,000
49,752 to 49,875
4,929 to 49,751
.
.
.
402
401
400
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).
Integer dividing ratio set
according to the target
frequency set by user.
Dividing circuit
Actual output frequency
1,000,000
952,381
909,091
.
.
.
500,000
487,805
476,190
.
.
.
100,806
198,020
196,078
.
.
.
50,000
49,875
49,751
.
.
.
402
401
400
Section 7-6
Output pulses
(Actual output frequency)