Toshiba PROSEC T1 User Manual page 152

7. Instructions
CNT Counter
Expression
Count input
C
Enable input
E
Function
While the enable input is ON, this instruction counts the number of the count input changes from OFF
to ON. The count value is stored in the counter register B . When the count value reaches the set value
A , the output and the counter device corresponding to B are turned ON. When the enable input comes
OFF, B is cleared to 0 and the output and the counter device are turned OFF.
The available data range for operand A is 0 to 65535.
Execution condition
Enable
input
OFF No operation ( B is cleared to 0)
Count value ( B ) < set value ( A )
ON
Count value ( B ) ³ set value ( A )
Operand
Name
A Set value
B Count value
Example
X001
X002
C010
C.010
Y021
150
T1/T1S User's Manual
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CNT Output
Q
A B
Operation
Device
X Y R S T. C. XW YW RW SW T
5
4
3
2
1 1
Output
OFF
OFF
ON
Register
Ö Ö Ö Ö Ö
Note
· No transitional contact is required for the
count input. The count input rising edge is
detected by this instruction.
· For the count input, direct linking to a
connecting point is not allowed. In this
3
case, insert a dummy contact (always ON =
2
S04F, etc.) just before the input.
Refer to Note of Shift register FUN 074.
· Multiple counter instructions (CNT) with the
same counter register are not allowed.
Constant Index
C D I J K
Ö Ö Ö Ö Ö
0 - 65535
Ö
6F3B0250