4-16
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<4. Module Access >
IM 34M6H54-01E
CAUTION
To change the ring up-counter maximum value, first stop the counter operation and then
reset it. If its maximum value is changed while the counter is operating, operation of the
counter will not be assured.
SEE ALSO
For information on how to stop the counter operation, refer to “Counter enabled and disabled” in Section
2.2, “Operation of modules.”
SEE ALSO
For information on how to reset the counter value, refer to “Resetting the counter” in Section 2.2, “Opera-
tion of modules.”
●
Input function
The input function is set using bit numbers 0 to 3 of the data position number corresponding
to the input channel.
Bit number
TC040206_01.EPS
Input
channel
Data position
number
1
3
2
7
3
11
4
15
15
0
0
0
0
14
0
0
0
0
13
0
0
0
0
12
0
0
0
0
11
0
0
0
0
10
0
0
0
0
9
0
0
0
0
8
0
0
0
0
7
0
0
0
0
6
0
0
0
0
5
0
0
0
0
4
0
0
0
0
3
0
0
0
0
2
0
0
0
0
1
0
0
0
0
0
0
0
0
0
•
Bit number 0: Counter edge setting
Select whether to count on the rising edge or the falling edge.
0: Count on rising edge
1: Count on falling edge
•
Bit number 1: Ring up-counter maximum value setting
Select whether to use the initial value of the ring up-counter maximum value or to use
(preset value 2 - 1).
0: Use the initial value ($FFFF) for the ring up-counter maximum value.
1: Use (preset value 2 - 1) as the ring up-counter maximum value.
•
Bit number 2: Stop setting of counter operation
Select the counter operation when the counter values exceeds the ring up-counter
maximum value and returns to 0.
0: When returned to 0, counter operation continues.
1: When returned to 0, counter operation stops.
1st Edition : Feb.01,1999-00
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