STEP 5 Operations S5-100U
Unconditional Block Call “JU”
One block is called within another block, regardless of conditions.
Example: A special function has been programmed in FB26. It is called at several locations in
the program, e.g., in PB63, and processed.
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JU FB 26
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The “JU FB26” statement in program
block PB63 calls function block FB26.
STL ExplanationProgram Sequence
PB63 FB26
JU FB26
Conditional Block Call “JC”
One block is called within another block when the previous condition has been satisfied
(RLO = “1”).
Example: A special function has been programmed in FB63. It is called and processed under
certain conditions, e.g., in PB10.
FB63
STL
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.
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S F 1.0
A I 0.0
JC FB 63
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The “JC FB63” statement in program
block PB10 calls function block FB63
if input I 0.0 is “1”.
ExplanationProgram Sequence
A I 0.0
PB10
JC FB63
8-34
EWA 4NEB 812 6120-02
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