User`s manual

124
(b) Within-range output/out-of-range output
The figure below shows the timing of an interrupt signal when the comparison condition for the coincidence
output 1 is in-range output or not-in-range output.
After an interrupt occurs, another interrupt does not occur at the rising state (off to on) of Coincidence output 1
to 8 (X10 to 17) for the certain duration (t in the figure)
● After coincidence detection, it takes approximately 150µs until an interrupt request is issued to the CPU module.
● The coincidence detection interrupt function can be used only when the coincidence output function is selected as the
comparison output setting value, and the normal mode is selected as the operation mode.
● With coincidence output selected as the comparison condition, a coincidence detection interrupt occurs at the timing of a
rising edge (off to on) of Coincidence output 1 to 8 (X10 to X17). For this reason, the next interrupt request is not issued
unless the coincidence output is reset and Coincidence output 1 to 8 reset command (Y10 to Y17) is turned off.
● With in-range output or not-in-range output selected as the comparison condition, a coincidence detection interrupt does
not occur at the timing of a rising edge (off to on) of Coincidence output (X10 to X17) for a certain period of time (from
0.5ms to 2.5ms) after the occurrence of an interrupt. Provide an interval of at least 2.5ms to generate an interrupt. Here is
a formula for estimating the interval with the count value:
Interval (by the count value) (pulse input speed (pps)/2500)
t *1
*1 0.5ms t 2.5ms
Interrupt program Interrupt program
During this time, an interrupt does not occur at the rise of
Coincidence output 1 to 8 (X10 to X17).
Input
signal
CPU module
internal
processing
Coincidence output 1
(X10)
Interrupt request
Interrupt request clear
Sequence program
of the CPU module