6F3B0253
Basic Hardware and Function 129
7. InstructionsTON 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 Out put
OFF No operatio n (timer is not updating) OFF
ON Elapsed time < preset time (t i mer is updating) OFF
Elapsed time ≥ preset time (t i mer is not updating) ON
Operand
Name Device Register Constant Index
X Y R S T. C. XWYWRWSW T C D I J K
APreset time √√√√√√√√√√
0 - 32767
BElapsed time √
Example
Y021 (and the timer device T.000) is turned ON 2 seconds after X000 came ON.
X000
T000
T.000
Y021
Preset time (2s) Less than preset time
Preset value 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.