A.1.4 Evaluation Of Cc 1 And Cc 0 - Siemens S5-100U User Manual

Operations List, Machine Code and Abbreviations
Oper- Permissible
ation Operands
(STL) 1
Block Call Operations and Return Operations
JU OB N
JC OB Y
Jump Operation
JUR N
Arithmetic Operations
ADD BF N
ADD KF N
Other Operations
STS N
TAK N
* 1 RLO dependent ?
1) RLO is set to "1"
A.1.4 Evaluation of CC 1 and CC 0
Arithmetic
CC 1 CC 0
Operations
0 0
Result
= 0
0 1
Result
< 0
1 0
Result
> 0
A-14
Execution Time in µs
RLO*
CPU 100
2 3
N Y --
1)
Y Y --
N N --
N N --
N N --
N N --
N N --
2 RLO affected ?
Digital
Logic
Operations
Result
= 0
Result
0
CPU 102 CPU 103
MA02 MA03
-- 187 3.35
-- 194 3.35
-- 131 82
-- 58 35
-- 104 68
--
-- 74 57
3 RLO reloaded ?
Comparison
Operations Operations
ACCU 2
= ACCU 1
ACCU 2
< ACCU 1
ACCU 2
> ACCU 1
S5-100U
Function
Call an organization block
unconditionally.
Call an organization block
conditionally.
Jump at random within a
function block (jump distance
-32768 to + 32767)
Add byte constant (fixed point)
to ACCU 1.
Add fixed-point constant
(word) to ACCU 1.
Stop operation. Program pro-
cessing is interrupted imme-
diately after this operation.
Swap the contents of ACCU 1
and ACCU 2.
Shift Conversion
Operations
shifted
bit = 0
Result
< 0
shifted Result
bit = 1 > 0
EWA 4NEB 812 6120-02