6F3B0253
7. Instructions
TON
ON delay timer
Expression
Input [ A TON B ] Output
Function
When the input is changed from OFF to ON, timer updating for the timer register B is started. The elapsed time is stored in B. When the specified time by A has elapsed after the input came ON, the output and the timer device corresponding to B is turned ON. (Timer updating is stopped)
When the input is changed from ON to OFF, B is cleared to 0, and the output and the timer device are turned OFF.
The available data range for operand A is 0 to 32767.
Execution condition
Input |
| Operation | Output |
OFF | No operation (timer is not updating) | OFF | |
ON | Elapsed time < | preset time (timer is updating) | OFF |
| Elapsed time ≥ | preset time (timer is not updating) | ON |
Operand
| Name |
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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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| √ | √ | √ √ | √ | √ | √ | √ | √ | √ |
| 0 - 32767 |
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B | Elapsed time |
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| √ |
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Example
Y021 (and the timer device T.000) is turned ON 2 seconds after X000 came ON.
X000
Preset 
value 
T000
T.000
Y021
Preset time (2s) 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.
Basic Hardware and Function 129
