32.7.1.2 Timing Chart for TON Instruction Operation

• Point A

The timer turns ON and the timer measurement bit .TI turns ON. The timer measurement starts and the elapsed time .ET increases. The timer output bit .Q remains OFF.

• Point B

When the elapsed time .ET equals the preset time .PT, the timer output bit .Q turns ON. The value of the elapsed time. ET remains the same as the preset time . PT. The timer measurement bit .TI turns OFF.

• Point C

The timer input bit IN turns OFF and the timer output bit Q turns OFF. The elapsed time .ET resets to 0.

• Point D

The timer turns ON and the timer measurement bit .TI turns ON. The timer measurement starts and the elapsed time .ET increases.

• Point E

The timer turns OFF before the elapsed time .ET reaches the preset time .PT. While the timer output bit .Q remains OFF, the elapsed time .ET is 0. The elapsed time .ET resets to 0.