Siemens SIMATIC S5 - Page 248

List of Operations S5-115F Manual
for organization blocks (OB)
for program blocks (PB)
for function blocks (FB)
for sequence blocks (SB)
Function
Execution time
in µsec.
CPU
942F
I Q F T C 321
Ope-
ration
(STL)
1 RLO-depend.?
2 RLO affected?
3 RLO reloaded?
Operands
Comparison Operations
!=F N Y N 1.6
Compare two fixed-point numbers if equal: if
ACCUM 1=ACCUM 2, the RLO is ”1”. CC1/CC0 are affected.
><F
>F
>=F
1.6
1.6
1.6
N
N
N
Y
Y
Y
N
N
N
Compare two fixed-point numbers if not equal: if
ACCUM 1 ACCUM 2, the RLO is ”1”. CC1/CC0 are affected.
Compare two fixed-point numbers for greater than: if
ACCUM 2 > ACCUM 1, the RLO is ”1”. CC1/CC0 are affected.
Compare two fixed-point numbers for greater than or equal to:
if ACCUM 2 ACCUM 1, the RLO is ”1”. CC1/CC0 are affected.
Compare two fixed-point numbers for less than:
if ACCUM 2 < ACCUM 1, the RLO is ”1”. CC1/CC0 are affected.
<F
<=F
1.6
1.6
Compare two fixed-point numbers for less than or equal to: if
ACCUM 2 ACCUM 1, the RLO is ”1”. CC1/CC0 are affected.
N
N
Y
Y
N
N
Block Call Operations
JU
JU
PY
FY
N 152
154
N Y
N N Y
JU SB N N Y 152
Unconditional jump to a program block
Unconditional jump to a function block
Unconditional jump to a sequence block
JC PY
156
Y Y
1
Y
Conditional jump to a program block
JC
JC
FY
161
Y Y
1
Y
SB Y Y
1
Y
160
Conditional jump to a function block
Conditional jump to a sequence block
1 RLO is set to ”1”
A-8 EWA 4NEB 811 6149-02