| 摘要 |
PURPOSE:To easily produce a control signal that is required for operation of the machinery, by securing the production of the control signal corresponding to the contents of display given on a display panel after closing a switch contact. CONSTITUTION:The display information given to a display control circuit DRC from a machinery control circuit CC is decided by a decoder DEC and turned into signals Sa-Sd. These signals are applied to liquid crystal panels 9-12 of a display panel DP via exclusive OR circuits EOR1-EOR4 and in the form of driving voltages Sad-Sdd. Thus a necessary display corresponding to the display information given from the circuit CC is given to the panel DP. According to this display, an operator performs a designated operation and then closes a switch contact SC of a push-button display switch SW. Thus only the one to which a sigal of H level is applied from the circuit DRC among AND circuits AND circuits AND1-AND4 in a control signal generating circuit CSG transmits the control signal of H level to the corresponding one of output terminals Ta-Td. |
