Short description
The stopwatch records the time elapsed since it was enabled.
Connection | Description |
Input En | En (Enable) is the monitoring input. LOGO! sets the current elapsed time to 0 and begins counting elapsed time when En transitions from 0 to 1. When En transitions from 1 to 0, the elapsed time is frozen. |
Input Lap | A positive edge (0 to 1 transition) at input Lap pauses the stopwatch, and sets output to lap time. A negative edge (1 to 0 transition) at input Lap resumes the stopwatch, and set the output to current elapsed time.. |
Input R | A signal at input R (Reset) clears the current elapsed time and lap time. |
Parameter | Time base for elapsed time, which you can set to hours, minutes, seconds, or 1/100ths of seconds. |
Output AQ | The output AQ outputs value of the current elapsed time when it is a negative edge (1 to 0 transition) at the input Lap, and outputs value of the Lap time when it is a positive edge (0 to 1 transition) at the input Lap. A positive edge (0 to 1 transition) resets the value at output AQ to 0. |
Parameters Time base
You can configure the time base for the analog output:
The time base for the elapsed time can be in hours, minutes, seconds, or 1/100ths of seconds (units of 10 milliseconds). The smallest time base, and therefore the resolution, is 10 milliseconds, or 1/100ths of seconds.
Timing diagram
Description of the function
When En = 1, the current time increases.
When En = 0, the current time counting pauses.
When En = 1 and Lap = 0, the output AQ outputs the value of the current elapsed time.
When En = 1 and Lap = 1, the current time continue increasing, but the output AQ outputs the value of the Lap time.
When En = 0 and Lap =1, the output AQ outputs the value of the Lap time.
When En = 0 and Lap = 0, the output AQ outputs the value of the latest current time.
When R = 1, both the current time and the Lap time are reset.