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3 Safety Standard Function Blocks
3 - 16
NX-series Safety Control Unit Instructions Reference Manual (Z931)
SF_TON
This FB outputs TRUE when the set time elapses after the timer starts.
Instruction
Name
FB/FUN
Graphic expression
SF_TON
On-Delay Timer
FB
Variables
Input Variables
Variable
Name
Data type
Valid range
Default
Description
IN
Timer input
BOOL
TRUE or FALSE
FALSE
TRUE: Timer start specification
FALSE: Timer reset specification
PT
Set time
TIME
Depends on data
type.
0
Time from when timer starts until
Q
changes to TRUE
Output Variables
Variable
Name
Data type
Valid range
Default
Description
Q
Timer output
SAFEBOOL TRUE or FALSE
FALSE
TRUE:
ET
reached
PT
.
FALSE:
IN
is TRUE and
ET
is lower
than
PT
after the timer starts.
ET
Elapsed time
TIME
Depends on data
type.
0
Elapsed time since timer started
SF_TON
IN
PT
Q
ET
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: ......