DL205 User Manual, 4th Edition, Rev. B
5–47
Chapter 5: Standard RLL Instructions - Timer, Counter and Shift Register
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A
B
C
D
Counter Example Using Discrete Status Bits
In the following example, when X1 makes an off to on transition, counter CT2 will
increment by one. When the current value reaches the preset value of 3, the counter status bit
CT2 will turn on and energize Y7. When the reset C10 turns on, the counter status bit will
turn off and the current value will be 0. The current value for counter CT2 will be held in V-
memory location V1002.
Counter Example Using Comparative Contacts
In the following example, when X1 makes an off to on transition, counter CT2 will
increment by one. Comparative contacts are used to energize Y3, Y4, and Y5 at different
counts. When the reset C10 turns on, the counter status bit will turn off and the counter
current value will be 0, and the comparative contacts will turn off.
2
C
Handheld Programmer Keystrokes
CT2
X1
CNT
CT2
K3
C10
Y7
OUT
X1
CT2 or
Y7
1
2
3
4
0
Current Value
C10
Counting diagram
Direct
S
O
F
T
S
T
R
$
1
B
E
NT
3
D
E
NT
S
T
R
$
S
H
F
T
E
NT
2
C
1
B
0
A
CNT
G
Y
S
T
R
$
S
H
F
T
E
NT
OUT
G
X
E
NT
7
H
2
C
MLR
T
2
C
Handheld Programmer Keystrokes
(c
ont
)
S
H
F
T
Handheld Programmer Keystrokes
X1
CNT
CT2
K3
C10
X1
Y3
1
2
3
4
0
Current
Value
C10
Counting diagram
CTA2
K1
CTA2
K2
CTA2
K3
Y4
OUT
Y3
OUT
Y5
OUT
Y4
Y5
Direct
SOFT
Handheld Programmer Keystrokes (cont)
STR
$
SHFT
ENT
OUT
GX
ENT
2
C
4
E
STR
$
SHFT
2
C
ENT
OUT
GX
ENT
3
D
5
F
STR
$
1
B
ENT
2
C
STR
$
SHFT
1
B
ENT
OUT
GX
ENT
3
D
STR
$
SHFT
ENT
2
C
1
B
0
A
CNT
GY
ENT
3
D
MLR
T
2
C
2
C
MLR
T
2
C
2
C
MLR
T
2
C
SHFT
SHFT
SHFT
