| 摘要 |
PURPOSE:To enlarge the number of degrees of freedom for setting the sequence, by sotring the sequence in advance in an RAM in the control part body, and also providing a timing circuit for turning on and off a relay at constant intervals. CONSTITUTION:A data showing an operation interval of a control part body is inputted and stored in an RAM 8 by a value set by a timer 10 from a control line 9. When counting of the timer 10 is started, a pulse waveform of a constant period is outputted, a relay 5 is turned on through a flip-flop 4, and electric power is supplied to the control part body consisting of an ROM 6, a microcomputer 7, the RAM 8, etc. When the electric power is supplied, the microcomputer 7 starts its operation, contents of the timer 10 are compared with contents stored in the RAM 8, and in case when those values have been in coincidence, the control operation is started, and in case of dissidence, a reset signal is outputted to the flip-flop 4. In accordance with this signal, the relay 5 is turned off through the flip-flop 4, and the supply of the electric power is disconnected. |
