发布于 2007-07-26 10:35:24
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The Pulse Timer (TP) is used to generate pulses for a specific duration. As the enabling input (IN) becomes true, the output bit (Q) turns on. The output bit remains true for the pulse specified within the preset time (PT). Once the elapsed time (ET) reaches preset (PT), the output bit (Q) becomes false. The elapsed time remains true until the enabling input becomes false. Once the output bit becomes true, it remains true until the pulse time (PT) has elapsed.TON, TOF, and TP timers are available in three resolutions. The resolution is determined by the timer number as shown in the chart below. Each count of the current value is a multiple of the time base. For example, a count of 50 on a 10-ms timer represents 500 ms.