The requirement is defined that the pump must be started before the valve is opened and the valve must be closed before the ... pressure, the schedule of inputs and outputs is drawn up as in Tables 1 and 2 respectively and the logic diagram prepared as in figure 3. ... In the case of the operator start/stop command a logical 1 is taken to exist if the command is aquot;startaquot; and a logical 0 if the command is aquot;stopaquot;.
Title | : | Advances in computer control |
Author | : | Institution of Electrical Engineers. Control and Automation Division |
Publisher | : | - 1967 |
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