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1-2
Functional Description of the Terminal
Areas of Usage
Event counting
Example for event counting
• Pulse generator:
The pulse generator generates square signals with frequencies of
1 kHz to 10 kHz in 500 Hz steps.
• The event count and frequency measurement modes deliver a 24 bit
test value; the time measurement delivers a 16 bit test value.
• A link between the source signal and the gate signal can be selected
as the counting signal.
• During operation, a start or end value can be changed without having
to stop the counter.
• An RC filter can be connected at the source and at the gate. This
allows mechanical switches to be used.
• A counter-start command does not have to be issued to start counting.
Counting begins immediately when the command for the selection of
the operating mode is transmitted.
• The counter terminal works in process data mode.
Event counting has been designed for unit counting.
1
Fig. 1-2: Example configuration for counting separately packed articles
Legend:
No.
Sensor/Actuator
1
Valve (control of the flap)
2
Sensor (control signal)
3
Sensor (count pulse)
In the example shown in Fig. 1-2, e.g. 100 screws should be packaged in
a box. The control input (2) releases the counter at the counter input (3)
when there are screws in the funnel. Every screw that falls from the funnel
into the box triggers a pulse at the counter input. When there are 100
screws in the box, the switch output (1) is set ad the valve closes the
funnel. A new box can now be filled.
I B
I L
2 4
B K - T
B A
R D
R C
L C
B K - T
1
2
1
2
1
1
1
1
2
2
2
2
3
3
3
3
4
4
4
4
2
3
Corresponding input/output
Switch output
Control input
Counter input
DOK-CONTRL-R-IL*CNT***-AW02-EN-P
Counter Terminal
I B
I L
C N T
D
U L
U S
S
1
G
E
U M
1
2
1
2
1
2
1
2
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3
3
4
4
4
4
4
4
4
4
5 8 9 7 0 0 0 2
58970002.eps
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