6F3B0253
7. Instructions
TOF
OFF delay timer
Expression
Input [ A TOF B ] Output
Function
When the input is changed from OFF to ON, the output and the timer device corresponding to the timer register B are set to ON. When the input is changed from ON to OFF, timer updating for B is started. The elapsed time is stored in B. When the specified time by A has elapsed after the input came OFF, the output and the timer device are turned OFF. (Timer updating is stopped)
The available data range for operand A is 0 to 32767.
Execution condition
Input |
| Operation | Output |
OFF | Elapsed time < | preset time (timer is updating) | ON |
| Elapsed time ≥ | preset time (timer is not updating) | OFF |
ON | No operation (timer is not updating) | ON | |
Operand
| Name |
|
| Device |
|
|
|
|
|
| Register |
|
|
|
| Constant | Index | ||
|
| X | Y | R | S | T. | C. | XW | YW | RW | SW | T | C | D | I | J | K |
|
|
A | Preset time |
|
|
|
|
|
| √ | √ | √ √ | √ | √ | √ | √ | √ | √ |
| 0 - 32767 |
|
B | Elapsed time |
|
|
|
|
|
|
|
|
|
| √ |
|
|
|
|
|
|
|
Example
Y021 (and the timer device T.002) is turned OFF 1 second after X000 came OFF.
X000
Preset value 
T002 
T.002
Y021
Preset time (1 s) Less than preset time
Note
•Time is set in 10 ms units for;
T1: T000 to T031 (0 to 327.67 s)
T1S: T000 to T063 (0 to 327.67 s)
•Time is set in 100 ms units for; T1: T032 to T063 (0 to 3276.7 s) T1S: T064 to T255 (0 to 3276.7 s)
•Multiple timer instructions (TON, TOF or SS) with the same timer register are not allowed.
130
