| 摘要 |
Programmable sequencer apparatus for enabling an operator to selectively establish sequential energizing patterns for a plurality of outputs and thereafter for causing said plurality of outputs to be selectively energized in the sequences defined is set forth in accordance with the teachings of the present invention. According to a preferred embodiment, programmable sequencer apparatus is provided for controlling the selective energization of a plurality of outputs under conditions where any of the plurality of outputs may be selectively energized as a step of a sequence, a group of steps may be established in a sequence to define a programmed operating formula for equipment to be controlled and a plurality of operating formulas may be established to accommodate various modes of operation. A light emitting diode is provided to designate an energized state for each of the plurality of outputs, and indicators are provided to display the step, time of operation for that step and the formula being programmed or initiated. During a program mode, the step and formula being programmed is displayed and each light emitting diode is illuminated in sequence. Desired ones of the plurality of outputs to be energized during that step may be selected when its corresponding light emitting diode is illuminated. Upon selection, the corresponding light emitting diode is retained in an illuminated condition while the sequential illumination of remaining ones of the light emitting diodes continues until the sequence is completed. When the sequential illumination of all of the light emitting diodes for a given step has been completed, the time of energization for the selected outputs in that step is selected and displayed. Subsequently, information corresponding to the formula, step and duration of the step is stored whereupon a succeeding step in that formula may be defined in the foregoing manner. This is continued until all steps for a given formula are programmed and may be followed by creation of additional formulas. Upon completion of the program mode, the programmable sequencer apparatus may be placed in a Run mode and selected outputs energized in the sequential manner defined by the steps of the operating formula selected.
|
