On Pulse Catch Input Function - Panasonic fp2/fp2sh User Manual

FP2/FP2SH
2.11.5

On Pulse Catch Input Function

The I/O mixed unit (FP2−XY64D7T/FP2−XY64D7P) is equipped with "On pulse catch
input" function. The on pulse catch input function has a delay circuit built into the input
and is used in combination with a periodical interrupt function to make possible the read-
ing of on pulses with extremely small widths.
Readable pulse signals
Minimum pulse width: 0.4ms
Pulse interval: 6ms or more
Pulse interval: 6ms or more
Min. pulse width :
0.4ms
Method
In the program, specify the interval of periodical interrupt and the word number of I/O.
Considerations
The interval for the periodical interrupt is determined by the interrupt control instruction.
Specify the pulse catch I/O (input) with the ICTL and F143 (IORF) instructions.
Program example
When an I/O mixed unit with on pulse catch input function is installed to slot "0" of the
backplane.
2.11 I/O Mixed Units Specifications
Specifying the interval for the periodical interrupt
(set to 1ms)
Interrupt program
Specifying the word number of I/O for I/O update
Parts and Functions
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