Omron NX-SL series User Manual

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.
P. 3 -3
SF_CTU Up-counter Increments the counter value when the counter input signal is
received.
P. 3 -5
SF_CTUD Up-down Counter Creates an up-down counter that operates according to an
up-counter input and a down-counter input.
P. 3 -7
SF_F_TRIG Down Trigger Outputs TRUE for one task period only when the input signal
changes to FALSE.
P. 3 -1 0
SF_R_TRIG Up Trigger Outputs TRUE for one task period only when the input signal
changes to TRUE.
P. 3 -11
SF_RS Reset-Priority Keep Retains the value of a SAFEBOOL variable. P. 3-12
SF_SR Set-Priority Keep Retains the value of a SAFEBOOL variable. P. 3 - 1 3
SF_TOF Off-Delay Timer Outputs FALSE when the set time elapses after the timer starts. P. 3-14
SF_TON On-Delay Timer Outputs TRUE when the set time elapses after the timer starts. P. 3-16
SF_TP Timer Pulse Outputs TRUE during the set time after the timer starts. P. 3-18

Omron NX-SL series Specifications

General

Brand	Omron
Model	NX-SL series
Category	Control Unit
Language	English