Instruction Parameters
Supported PLC Series
| PLC-AES | PLC-FB | PLC-ES |
|---|---|---|
| ✓ | ✓ | ✓ |
Supported Data Registers
| M | X | Y | K | L | F | T | C | S | Z | R | Q | D | @D | Constant | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| t | – | – | – | – | – | – | ✓ | – | – | – | – | ✓ | – | – | – |
| v | – | – | – | – | – | – | – | – | – | ✓ | – | ✓ | ✓ | – | – |
Supported Flags
| Flag | Bit | Support |
|---|---|---|
| Error | F11.0 | ✓ |
| Zero | F11.1 | – |
| Carry | F11.2 | – |
Number of Steps
| Steps |
|---|
| 3 |
Operands
| Operand | Description |
|---|---|
| t | The first operand. Entries are only timer data registers. |
| v | The second operand. Entries are unsigned WORD data registers or constants. This is the value the timer will count up to. The unsigned value range is 0 ~ 65,535 (216-1). The Hexadecimal value range is H0000 ~ HFFFF. Signed value entries will be treated as unsigned values. |
Notice
Error Flag (F11.0) Notice
The error flag, F11.0, will be ON for one scan when the address of the data register assigned by Z exceeds its range. The valid range of the data register Z is Z128 ~ Z1023 when using Function Block implementation.
Instruction Behavior
The TON instruction behaves as follows:
- The data register T assigned to t is a BOOL data register.
- TS and TC express the detailed value of the data register T assigned to t.
- TC is a WORD data register used for the current time value of t.
- TS is a WORD data register used for the time setting value of t.
- The value of TS is equal to the value of v.
- TS and TC express the detailed value of the data register T assigned to t.
- The value of TC increases when the instruction is energized.
- When the value of TC equals the value of v, TC energizes or turns ON.
- The value of TC is 0 and deenergizes when the TON instruction deenergizes.
- If TC is affected by the RST instruction, the value of TC is 0, and the timer turns OFF.
- The actual time for the timer data register t is calculated as follows:
- Actual Time = v × time unit (100ms or 10ms)
- The timer contact assigned to t can be used as an A or B contact.
- When the timer contact meets the RST instruction, the current value is 0 and the timer turns OFF.
Timer Length
Please refer to the PLC Parameter section for more information about 10ms and 100ms timers.
Ladder Diagram Examples
TON
The TON instruction starts from 0 and counts up to a WORD value, v. The time is saved in a timer data register, t. If the instruction deenergizes, the value of TC is reset to 0.
When M0.0 is powered ON, the data register TC.1 counts up to 100.
When the value of the data register TC.1 is 100, the timer contact, T.1, powers ON. As a result, the coil Y1.0 is energized.
When the contact M0.1 is powered ON, the timer contact T.1 is reset. The value of the data register TC.1 is reset to 0 and begins counts up to 100 again.
Memory Monitor
This is the result of the data register TC.1 counting up to 100.
This is the result of the timer contact T.1 once the value of TC.1 is 100.