Siemens S5-100U - Page 478

Operations List, Machine Code and List of Abbreviabrations S5-100U
A-20
EWA 4NEB 812 6120-02
Abbreviation Explanation
Permissible Operand Value Range for
CPU 100 CPU 102 CPU 103
RLO Result of logic operation
RLO affected?
Y/N
The RLO is affected/not affected
by the operation.
RLO
dependent?
Y
Y
/Y
N
The statement is executed only if the RLO is “1”.
The statement is executed only on
positive/negative edge change of the RLO.
The statement is always executed.
RLO reloaded?
Y/N
When the next binary operation takes place, the
RLO is reloaded/not reloaded (e.g. A I 0.0).
RS System data area
- for load operations (supplementary operations)
and transfer operations (system operations)
- for bit test and set operations (system
operations)
(0 to 255)
(0.0 to 255.15)
SAC STEP address counter
SAV DB1 parameter: Clock time after last switch from
STOP RUN or save from last Power OFF
SB Sequence block (0 to 255)
SDP DB1 block ID for system data parameters
SET DB1 parameter: Set clock/date
SF DB1 parameter: SINEC L1, position of send
mailbox
SL1 DB1 block ID for SINEC L1
SLN DB1 parameter: SINEC L1, slave number
STL STEP 5 statement list method of representation
STP DB1 parameter: update the clock while in the
STOP state.
STW DB1 parameter: status word location (integral
real-time clock)
T Timer
- for the “Bit Test” and “Set” supplementary
operations
(0 to 15) (0 to 31) (0 to 127)
(0.0 to 127.15)
TFB DB1 block ID for timer function block
TIS DB1 parameter: set prompt time
WD DB1 parameter: set scan time monitoring
* +integrated FBs such as CPU 103