A.5 Evaluation Of Cc 1 And Cc - Siemens SIMATIC S5 Manual

List of Operations
for organization blocks (OB)
for program blocks (PB)
for function blocks (FB)
for sequence blocks (SB)
Operands
Ope-
ration
(STL)
I Q F T
Other Operations
Formal operand
DI *
• • • •
STS
TAK
* Do not use DI in the safety-related parts of programs.
A.5 Evaluation of CC 1 and CC 0
CC 1 CC 0
0 0
0 1
1 0
A-16
1 RLO-depend.? Execution time
2 RLO affected?
3 RLO reloaded?
C 1 2 3
N N N
•
N N N
N N N
Digital
Arithmetic
logic
operations
operations
Result Result
= 0 = 0
Result
< 0
Result Result
> 0
in µsec.
CPU
942F
Process via the formal operand (indirect).
128
The number of the formal operand is in ACCUM 1.
Stop operation: Program processing is interrupted immediately
47
after this operation.
47 Swap the contents of ACCUM 1 and ACCUM 2
Comparison
operations
ACCUM 2
= ACCUM 1
ACCUM 2
-
< ACCUM 1
ACCUM 2
0 > ACCUM 1
S5-115F Manual
Function
Shift Conversion
operations operations
Shifted
bit = 0
Result
-
< 0
Shifted Result
bit = 1 > 0
EWA 4NEB 811 6149-02
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