Ab-Phase Input High-Speed Counter - Delta DVP-ES2 Operation Manual

LD X21
DCNT C247 K5
LD C247
OUT Y0
1. When X20 is ON, RST instsruction executes and the current value in C247 will be cleared.
Contact C247 will be OFF.
2. When X21=ON, C247 receives count signals from X0 and counter counts up (+1), or C247
receives count signal from X1 and counter counts down (-1)
3. When C247 reaches K5, contact C247 will be ON. If there is still input signal from X0 or X1,
C247 will keep on counting
X20
X21
X0
count up
X1
count down
C247
present
value
Y0, C247 contact

AB-phase input high-speed counter:

Example:
LD M1002
MOV K2 D1022
LD X20
RST C251
LD X21
DCNT C251 K5
LD C251
OUT Y0
1. When X20 is ON, RST instsruction executes and the current value in C251 will be cleared.
Contact C251 will be OFF.
2. When X21 is ON, C251 receives A phase counting signal of X0 input terminal and B phase
counting signal of X1 input terminal and executes count up or count down
3. When counter C251 reaches K5, contact C251 will be ON. If there is still input signal from X0
or X1, C251 will keep on counting
4. Counting mode can be specified as double frequency or 4-times frequency by D1022. Default:
quadruple frequency.
3 3
2
1
0
2 . Pr ogr am m i ng Conc e pts
7
6 6
5
4
M1002
MOV
X20
RST
X21
DCNT
C251
Y0
5
4
K2 D1022
C251
C251 K5
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