6F3B0250
7. Instructions
TOF
OFF delay timer
Expression
Input ¾[ A TOF B ]¾ 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 ³ preset time (timer is not updating) | OFF |
ON | No operation (timer is not updating) | ON |
Operand
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| Device |
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| Register |
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| Constant | Index | ||
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| X | Y | R | S | T. | C. | XW | YW | RW | SW | T | C | D | I | J | K |
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A | Preset time |
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| Ö | Ö | Ö | Ö | Ö | Ö | Ö | Ö | Ö | Ö | 0 - 32767 |
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B | Elapsed time |
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| Ö |
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Example
Y021 (and the timer device T.002) is turned OFF 1 second after X000 came OFF.
X000
Note
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| · Time is set in 10 ms units for; | |||||||
| Preset value |
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| T1: | T000 to T031 | (0 to 327.67 s) | ||||
T002 | |||||||||||
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| T1S: T000 to T063 | (0 to 327.67 s) | |
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| · Time is set in 100 ms units for; | ||||
T.002 |
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| T1: | T032 to T063 | (0 to 3276.7 s) |
Y021 |
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| T1S: T064 to T255 | (0 to 3276.7 s) | ||||
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· Multiple timer instructions (TON, TOF or
Preset time (1 s) Less than preset time SS) with the same timer register are not allowed.
148 T1/T1S User’s Manual
CTi Automation - Phone: 800.894.0412 - Fax: 208.368.0415 - Web: www.ctiautomation.net - Email: info@ctiautomation.net
