STEP 5 Operations
S5-100U
Flip-Flop for a Latching Signal Output (reset dominant)
*
NOP 0
“NOP 0” is necessary if the program is to be represented in LAD or CSF form on programmers
with a screen. During programming in LAD and CSF, such “NOP
0” operations are allotted
automatically.
A “1” at input I 0.1 sets flip-flop Q 1.0 (signal state “1”). If
the signal state at input I 0.1 changes to “0”, the state of
output Q 1.0 is maintained, i.e., the signal is latched.
A “1” at input I 0.0 resets the flip-flop (signal state “0”).
When the “SET” signal (input I 0.1) and the “RESET”
signal (input I 0.0) are applied at the same time, the
scanning operation that was programmed last (in this case
A I 0.0) is in effect during processing of the rest of the
program.
In this example, resetting output Q 1.0 has priority.
Circuit Diagram
a a
a a
a a
a a
a a
a a
a a
I 0.0
Q 1.0
I 0.1
Example
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
I 0.1
Q 1.0
S
R
Q
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
a a a a a a a a a a a a
I 0.0
I 0.1
I 0.0
Q 1.0
S
R
Q
A
I
0.1
S
Q
1.0
A
I
0.0
R
Q
1.0
NOP
0
*
STL
CSF
LAD
8-8
EWA 4NEB 812 6120-02b
Summary of Contents for SIMATIC S5-100U
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Page 21: ...1 The SIMATIC S5 System Family EWA 4NEB 812 6120 02b ...
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Page 505: ...B Dimension Drawings EWA 4NEB 812 6120 02b ...
Page 515: ...C Active and Passive Faults in Automation Equipment EWA 4NEB 812 6120 02b ...
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Page 523: ...D Information for Ordering Accessories EWA 4NEB 812 6120 02b ...
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Page 531: ...E Reference Materials EWA 4NEB 812 6120 02b ...
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Page 535: ...F Siemens Addresses Worldwide EWA 4NEB 812 6120 02b ...
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Page 543: ...Index EWA 4NEB 812 6120 02b ...
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