Delta Electronics AH500, Manual

Page: 67 / 547

A H 5 0 0 M o t i o n C o n t r o l M o d u l e M a n u a l
Example:
LD X1.0
OUT SM255
LD X1.1
RST C255
LD X1.2
DCNT C255 K-5
LD C255
OUT Y0.0
C255
Y0.0
X1.2
C255 K-5 DCNT
X1.1
C255 RST
X1.0
SM 255
1. SM255 is driven by X1.0. The state of SM255 determines whether C255 counts up or counts
down.
2. If X1.1 is turned form OFF to ON, the instruction RST will be executed, the present value of
C255 will become 0, and the contact will be OFF.
3. If X1.2 is turned form OFF to ON, the present value of the counter will increase by one or
decrease by one.
4. If the present value of the counter C255 increases from K-6 to K-5, the contact C255 will be
turned form OFF to ON. If the present value of the counter C255 decreases from K-5 to K-6,
the contact C255 will be turned from ON to OFF.
5. If a value greater than the setting value of C255 is moved to C255 by means of the instruction
MOV, the contact C255 will be ON, and the present value of the counter will become the
setting value next time X1.1 is turned from OFF to ON.
X1 .0
X1 .1
X1 .2
The o utpu t
c onta ct is ON.
Y0 .0, C2 55
Cont ac t
C255 cou nts .
Pres en t v alue
In crea sing In crea sing Dec reas ing
0
1
2
3
4
5
4
3
2
1
0
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
0
- 7
- 6
- 5
- 4
- 3
3 - 1 0