Omron NX-SL series User Manual

3 Safety Standard Function Blocks
3 - 14
NX-series Safety Control Unit Instructions Reference Manual (Z931)
SF_TOF
This FB outputs FALSE when the set time elapses after the timer starts.
Instruction Name FB/FUN Graphic expression
SF_TOF Off-Delay Timer FB
Variables
Input Variables
Variable Name Data type Valid range Default Description
IN Timer input BOOL TRUE or FALSE FALSE TRUE: Timer reset specification
FALSE: Timer start specification
PT Set time TIME Depends on data
type.
0 Time from when timer starts until Q
changes to FALSE
Output Variables
Variable Name Data type Valid range Default Description
Q Timer output SAFEBOOL TRUE or FALSE FALSE TRUE: IN is TRUE and ET is lower
than PT after the timer starts.
FALSE: ET reached PT.
ET Elapsed time TIME Depends on data
type.
0 Elapsed time since timer started
SF_TOF
IN
PT
Q
ET

Omron NX-SL series Specifications

General

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