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The 1COUNT40kHz Counter Module
Do not accept the comparison
value
Comparison
value
not accepted?
Current count =
load value
Set comparison value =
"comparison value"
Enable gate
Current count = loaded
value + 20
Output is set for 500 ms
Stop gate
Current count =
"loaded value" + 30
Set comparison value =
"comparison value"
Figure 13-21 Example 2, Continued
13-24
A 4.3 = 0
No
E 4.5 = 0
This is the earliest point at which the
Yes
comparison value AW 2 can be changed
EW 0 = "loaded value"
EW 2 = "comparison value"
(in this example: "loaded value" + 25)
A 4.0 = 1
20 pulses, for example, arrive at
the input of the counter (A)
EW 0 = "loaded value" + 20
Another 10 pulses arrive at the input of the counter (A). As
a result, the comparison value is exceeded in this example.
E 4.2 = 1
E 4.2 = 0
A 4.0 = 0
Another 50 pulses arrive at the in-
put of the counter (A)
EW 0= "loaded value" + 30
EW 2 = "comparison value"
ET 200L, ET 200L-SC and ET 200L-SC IM-SC Distributed I/O Device
After 500 ms
EWA 4NEB 780 6009-02c
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