AutomationDirect DL105, User Manual

Page: 196 / 350

Standard
RLL
Instructions
5--36
Standard RLL Instructions
Timer, Counter, and Shift Register Instructions
DL105 PLC User Manual, 3rd Edition
In the following example, when X1 makes an off to on transition, stage counter CT7
will increment by one. When the current value reaches 3, the counter status bit CT7
will turn on and energize Y7. The counter status bit CT7 will remain on until the
counter is reset using the RST instruction. When the counter is reset, the counter
status bit will turn off and the counter current value will be 0. The current value for
counter CT7 will be held in V--memory location V1007.
3
D
7
H
Handheld Programmer Keystrokes
X1
C5
CT7
SGCNT CT7
K3
RST
X1
Y10
1 2 3 4 0
Current
Value
RST
CT7
CT7
Y7
OUT
Counting diagram
Direct SOFT
STR
$
1
B
ENT
CNT
GY
STR
$
SHFT ENT
OUT
GX
ENT
0
A
1
B
2
C
MLR
T
7
H
STR
$
SHFT ENT
2
C
5
F
RST
S
SHFT
2
C
7
H
ENT
SHFT
RST
S
6
G
SHFT
ENT
Handheld Programmer Keystrokes (cont)
SHFT
SHFT
SHFT
MLR
T
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. Although this is not shown in the example, when the counter is reset
using the Reset instruction, 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.
Handheld Programmer Keystrokes
X1
X1
Y3
1 2 3 4 0
Current
Value
Counting diagram
CT2 K1
CT2 K2
CT2 K3
Y4
OUT
Y3
OUT
Y5
OUT
Y4
Y5
SGCNT CT2
K10
Direct SOFT
Handheld Programmer Keystrokes (cont)
STR
$
1
B
ENT
CNT
GY
SHFT
RST
S
6
G
SHFT
ENT
2
C
1
B
0
A
STR
$
SHFT
1
B
ENT
OUT
GX
ENT
3
D
MLR
T
2
C
2
C
STR
$
SHFT
ENT
OUT
GX
ENT
2
C
4
E
STR
$
SHFT
2
C
ENT
OUT
GX
ENT
3
D
5
F
MLR
T
2
C
2
C
MLR
T
2
C
SHFT
SHFT
SHFT
Stage Counter
Example Using
Discrete Status
Bits
Stage Counter
Example Using
Comparative
Contacts