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32
Ch a pte r III Ge n e ra l De sc r i p t i o n o f F u n c t i o n B l o c k s
Time Sequence Frame：
Q
G_T
On=9
Fre
fa = 9
fa = 10
fa = 8
fa = 4
Off=5
fa = input frequency
Functional Description
If the On threshold ≥ Off threshold, then:
Q=1, if fa >= On
Q=0, if fa < Off
If the On threshold < Off threshold, then:
Q=1, if n <= fa < Off
Notes:
1. The counting frequency is related to filtering duration. If the default filtering duration is 50ms, please choose
high-speed running mode when input frequency exceeds 4HZ.
2. I4~I7 are high-speed inputs. Each high-speed input only can be connected with a function block of highspeed counting in a program.
3．3．2 A+ B- Counter (A+B-)
Line diagram/
Symbol in APB
CW
Pin
Input R
A signal at input R resets the internal count value to zero, and
the output (R takes priority over CW and CWW).
Input
The counter is counting up when there is a signal at input CW
(counter).
The counter is counting down when there is a signal at input
CWW (counter).
The function counts the 0 to 1 transitions at input, while 1 to 0
transitions are not counted.
Q
H
CWW
R
A+B-
P
Parameter Setting
Range of values: 0-99999999
Description
Output Q
When count value is reached, the Output Q is enabled.
Output P
Outputs the running value of the block to the Register D.