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CSE-Semaphore TWinSoft Manual - ioSelect

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10.6. Step by step creating of Ladder<br />

We assume that Tags already exist and that we work with global Tags.<br />

Suppose we are controlling a Reservoir LEVEL. When it reaches the value 150, we start the<br />

PUMP to remove water. At the same time, we start an INTEGRAL timer that memorizes the<br />

number of minutes the pump has been working.<br />

The PUMP can also be started manually.<br />

When 6000 minutes are reached, the timer - status TIMER - is at 1 and activates the output<br />

MAINTENANCE.<br />

We will create the following lines:<br />

figure 20<br />

We use the following Tags (see chapter 8 ‘Creating Tags’):<br />

LEVEL analog input.<br />

MANUAL digital input.<br />

PUMP digital output.<br />

TIMER digital state of the timer (DTI.10)<br />

MAINTENANCE digital output.<br />

RESET digital input.<br />

<strong>TWinSoft</strong>: 8.32 – Getting Started 32

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