STEP 5 Operations S5-115F Manual
Resetting a counter ”R” and counting up ”CU”
Example:
When input I 4.0 is switched on, the count in counter 1 is incremented by 1. As long as a second
input (I 4.2) is ”1”, the count is reset to ”0”.
The A C1 operation results in signal state ”1” at output Q 2.4 as long as the count is not ”0”.
LAD
R C1
STL CSF
A I 4.0
CU C 1
NOP 0
*
NOP 0*
NOP 0*
A I 4.2
RC1
NOP 0
*
NOP 0*
AC1
= Q 2.4
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Circuit DiagramTiming Diagram
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1
1
1
Time
0
0
2
0
0
I 4.0
I 4.2
C 1
Q 2.4
0
I 4.2
S CIR
Binary
16 bits
Q 2.4
I 4.0
CQ
I I I I
C 1
I 4.2 Q 2.4
CU
CD
S
CV BI
DE
RQ
I 4.0
C 1
I 4.0
Q 2.4
I 4.2
CU
CD
S
CV BI
DE
RQ
* NOP 0 is required if the program is to be represented in LAD or CSF on the PG 635, PG 670, PG 675, PG 685, PG 695 or
PG 750 programmers. NOP 0 operations are automatically assigned when programming in LAD and CSF.
3-28
EWA 4NEB 811 6149-02
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