Off Delay Timer - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

36.7

Off Delay Timer

TOF(_E)
RnPCPU RnPCPU
RnCPU RnENCPU
(Process) (Redundant)
• [RnPCPU (redundant)] If these function blocks are used in a program executed in both systems, they do not operate in the standby system when the
redundant system is in backup mode. ( MELSEC iQ-R CPU Module User's Manual (Application))
These function blocks turn off a signal after the specified period of time.
Ladder, FBD/LD
[Without EN/ENO]
s d1
n d2
Setting data
■Description, type, data type
Argument Description
EN Execution condition (TRUE: Executed, FALSE: Not executed)
s (IN) Time measurement
n (PT) Delay time setting value
ENO Output status (TRUE: Normal, FALSE: Abnormal or operation stop)
d1 (Q) Output
d2 (ET) Elapsed time
Processing details
■Operation processing
1.
Output
• When (s) turns on, (d) turns on.
• When (s) changes from on to off, (d1) turns off after the time that was set by (n). The delay time elapsed after (d1) turns off
is set to (d2).
• Use the long timer to count the elapsed time.
2.
Delay time setting
The valid setting range of (n) is T#1ms to T#2147483ms. Note that the valid setting range will be as follows by changing the
timer limit setting using the engineering tool.
Minimum value
Identical to the long timer setting value [ms] in the timer limit setting.
Note that if the long timer setting value is smaller than 1ms, the
minimum value will be 1ms.
The value at the falling edge (on to off) of (s) is used for the setting value of (n). When the (n) value is changed when (s) is off,
the new value will be enabled at the next falling edge of (s).
RnSFCPU RnSFCPU
(Standard) (Safety)
[With EN/ENO]
EN ENO
s d1
n d2
Maximum value
The time satisfying the following condition is used.
Note that the maximum value is a value that can be included within the range of time
type because the delay time setting value is of time type (32-bit value).
[Example]
Structured text
[Without EN/ENO]
Instance name(IN:=s,PT:=n,Q:=d1,ET:=d2);
[With EN/ENO]
Instance name(EN:=en,ENO:=eno,IN:=s,PT:=n,Q:=d1,ET:=d2);
Type
Input variable
Input variable
Input variable
Output variable
Output variable
Output variable
• Delay time setting value [ms]  2147483647 [ms]  Long timer setting value of in
the timer limit setting [ms]
• If the long timer setting value is 0.001ms: T#1ms to T#2147483ms
• If the long timer setting value is 1000ms: T#1000ms to T#2147483000ms
36 COUNTER/TIMER FUNCTION BLOCKS
Data type
BOOL
BOOL
TIME
BOOL
BOOL
TIME
1995
36.7 Off Delay Timer
36