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3 Safety Standard Function Blocks
3 - 4
NX-series Safety Control Unit Instructions Reference Manual (Z931)
The following figure shows a programming example and timing chart for a
PV
of INT#5.
• Use the SF_CTU instruction (P. 3-5) to create a counter that increments the counter value each time
the counter input signal is received.
• Use the SF_CTUD instruction (P. 3-7) to create a counter that is both incremented and decremented.
Additional Information
When
CV
reaches 0,
Q
changes to TRUE.
CV
is decremented as soon as
Load
changes to FALSE.
When
Load
changes to TRUE,
CV
is set to the value of
PV
and
Q
changes to FALSE.
CD=A
Load=abc
TRUE
FALSE
TRUE
FALSE
CV=ghi
PV=INT#5
Q=def
TRUE
FALSE
0
Summary of Contents for NX-SL series
Page 8: ...CONTENTS 6 NX series Safety Control Unit Instructions Reference Manual Z931 ...
Page 28: ...Sections in this Manual 26 NX series Safety Control Unit Instructions Reference Manual Z931 ...
Page 98: ...2 Standard Functions 2 64 NX series Safety Control Unit Instructions Reference Manual Z931 ...
Page 104: ...2 Standard Functions 2 70 NX series Safety Control Unit Instructions Reference Manual Z931 ...
Page 110: ...2 Standard Functions 2 76 NX series Safety Control Unit Instructions Reference Manual Z931 ...
Page 265: ...I 1 I NX series Safety Control Unit Instructions Reference Manual Z931 Index ...
Page 268: ...I 4 NX series Safety Control Unit Instructions Reference Manual Z931 Index ...
Page 269: ......