M9170
M9171
M9172
M9173
M9174
M9175
M9176
M9177
Program example:
During program operation, when the external input point X0 changes from OFF to ON, the M9170 is set to ON in an
interrupt manner. Subsequently, the M9170 will remain its ON status no matter the X0 changes OFF or ON.
After the X20 is turned ON to reset the M9170 to OFF, the M9170 is able to turned ON again by the next time that X0
changes from OFF to ON.
Y0
M9170
X20
RST
M9170
. . . . . .
X0 Input Signal
M9170
X20(Reset)
55
2-15-2 Pulse Capture
The function of pulse capture is to get the input signal which the width of ON is narrow. If an input point X0~X7 is not to
use an input special function, its pulse capture is active automatically.
The pulse signals which X0~X7 input points capture will reect to the special relays M9170~M9177. For each captured
point, its special relay can only be cleared by using the RST instruction. And after the END instruction is executed, the
input point is able to capture the next signal.
Only one signal can be captured at a scan time. Therefore, if there is a demand for to capture more signals at a short
time, the external interrupt function can be used for this purpose.
The table below lists the special relays related to this function:
Relay ID No.
Description
X0 input signal captured ag.
X1 input signal captured ag.
X2 input signal captured ag.
X3 input signal captured ag.
X4 input signal captured ag.
X5 input signal captured ag.
X6 input signal captured ag.
X7 input signal captured ag.
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