4. Functions
48
CNT-3208M-PE
Obtaining the count value
Obtaining the count value
There are two modes for obtaining the count value. One is the counter mode to directly read the count
value without using bus mastering and the other is the sampling mode to sample the count value
periodically using bus mastering.
This product is capable of bus mastering, enabling periodical sampling of the count value using the
internal or external clock signal.
Figure 4.8. Counter mode and sampling mode
Counter mode
In the counter mode, this product starts the counter after setting counter operation conditions and
performs counter operations such as reading the count value and status.
In addition, this mode allows this product to preset, zero-clear, start/stop the counter at the rising or
falling edge of the control input signal. A one-shop pulse can be output to the control input signal at an
occurrence of a count match or error.
Figure 4.9. Timing chart (Counter mode)
Is a sampling used?
Bus mastering is not used.
Only counter start/stop is used
.
Sampling start/stop cannot be used.
Counter mode
Bus mastering i
s used.
Both of counter start/stop and sampling start/stop are used.
Counting and sampling can be performed synchronously
by specifying sampling start/stop as the counter start/stop condition
.
Sampling mode
Yes
No
Pulse incoming
signal
Sampling clock
Count value
0
1
2
3
4
5
6
7
8
9
Nothing
Sampling value
Nothing
Nothing
Nothing
Counter start
Counter stop
Summary of Contents for CNT-3208M-PE
Page 7: ...vi CNT 3208M PE ...
Page 15: ...1 Before Using the Product 8 CNT 3208M PE ...
Page 30: ...2 Setup CNT 3208M PE 23 3 Click on the End button to finish condition setting Click on End ...
Page 35: ...2 Setup 28 CNT 3208M PE ...
Page 71: ...4 Functions 64 CNT 3208M PE ...
