LOGO! Manual
A5E00380835-01
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B1 1+
On =1000
Off=0000
B1 2
G_T=02:00s
Press
3. Now start the circuit program and switch LOGO! to pa-
rameter assignment mode. In this mode, view the trigger
parameters.
B1
On =1000
Off =0000
fa =0086
f
a
= total of measured pulses per time
4. The reciprocal value of f
a
is equivalent to the LOGO!
execution time of the current circuit program in its me-
mory.
1/f
a
= cycle time in s
Explanation
The inverted flag block changes its output signal at each
program execution. Thus, one logic level (high or low) width
is exactly equivalent to the length of one cycle. Hence, a
period lasts 2 cycles.
The threshold trigger indicates the ratio of periods per 2
seconds, which results in the ratio of cycles per second.
Edge transition of the inverted flag at
each circuit program execution
Cycle
time
Period
1 period = 1 pulse = 2 cycles
Determining the cycle
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