S5-115F Manual List of Operations
A List of Operations
A.1 Explanatory Notes on the Operands
Abbreviations Explanation
ACCUM 1 Accumulator 1 (during the loading of accumulator 1 any existing contents are shifted into accumulator 2).
Accumulator 2ACCUM 2
CSF
LAD
Control system flowchart method of representation in STEP 5.
Ladder diagram method of representation in STEP 5.
PII Process input image
PIQ Process output image
RLO Result of logic operation
RLO affected?
Y / N
The RLO is
affected / not affected by the operation.
RLO-dependent Y
Y
/
N
The statement is executed only if RLO = ”1”.
The statement is executed only on the leading ( ) or trailing ( ) edge of the RLO.
The statement is always executed.
RLO reloaded?
Y / N
The RLO is
reloaded / not reloaded with the signal state of the parameter used when the next logic operation (but not
assignment) is performed.
CC 0 / CC 1 Condition code 0 / Condition code 1
OV Overflow. This condition code bit is set if, for example, the numerical range is exceeded during arithmethic
operations.
Formal operand Expression of up to 4 characters. The first character must be a letter.
STL Statement list method of representation in STEP 5.
EWA 4NEB 811 6149-02
A-1
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