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Kuhnke Electronics Instruction Manual

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5.3.3 Functions of Internal Outputs (0.1 A)<br />

SO_0...SO_3<br />

The following functions are supported<br />

� normal output<br />

5.3.3.1 Normal Outputs<br />

� clock pulse output<br />

5.3.3.2 Clock Pulse Outputs<br />

'Normal' output means that the output is enabled or<br />

disabled as a continuous signal.<br />

Software<br />

'Clock pulse' output means that a clock pulse is enabled<br />

or disabled as the output signal.<br />

Clock pulse outputs are designed for the actuation or<br />

stepper motor output stages, for example.<br />

- The pulse-to-pause ratio of the clock pulse is always<br />

1:1.<br />

To start or stop a motor, the speed needs to go up or<br />

down with reference to the time, which is realised by the<br />

PLC program selecting the appropriate frequency.<br />

� The value entered and the frequency are linked by an<br />

allocation table which is stored in the PLC's monitor<br />

program.<br />

� The frequency is adjustable by selecting any of the<br />

395 different frequencies on the list.<br />

� Note that selecting '0' sets a frequency of 200 Hz<br />

already.<br />

� Whereas do0 and do1 as well as do2 and do3 are<br />

actuated by the same clock pulse, they can still be<br />

enabled and disabled separately.<br />

Select input/output function (� 5.3.1.1)<br />

The frequency is set by variables.<br />

� To be shown information about these variables,<br />

choose "Resources, PLC Configuration, <strong>Kuhnke</strong><br />

133

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