3 Safety Standard Function Blocks
3 - 2
NX-series Safety Control Unit Instructions Reference Manual (Z931)
Safety Standard Function Block
Instructions
Instruction
Variable
Function
Page
SF_CTD
Down-counter
Decrements the counter value when the counter input signal is
received.
SF_CTU
Up-counter
Increments the counter value when the counter input signal is
received.
SF_CTUD
Up-down Counter
Creates an up-down counter that operates according to an
up-counter input and a down-counter input.
SF_F_TRIG
Down Trigger
Outputs TRUE for one task period only when the input signal
changes to FALSE.
SF_R_TRIG
Up Trigger
Outputs TRUE for one task period only when the input signal
changes to TRUE.
SF_RS
Reset-Priority Keep
Retains the value of a SAFEBOOL variable.
SF_SR
Set-Priority Keep
Retains the value of a SAFEBOOL variable.
SF_TOF
Off-Delay Timer
Outputs FALSE when the set time elapses after the timer starts.
SF_TON
On-Delay Timer
Outputs TRUE when the set time elapses after the timer starts.
SF_TP
Timer Pulse
Outputs TRUE during the set time after the timer starts.
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 ...
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