| 摘要 |
PURPOSE:To facilitate programming the sequence control, by providing both of a part, which outputs a control signal corresponding only to a condition determined by the status signal at the current time, and a part which performs the sequence control. CONSTITUTION:In a programmable controller, a condition control program memory area 12 (CONDITION CONTROL) and sequence control program memory lock areas 13a-13d (BLOCK) are prepared. When BLOCK 13 is not described, only CONDITION CONTROL 12 is available, and the relay circuit simulation system or the table look-up system is selected. When CONDITION CONTROL 12 is not described but only BLOCK 13 is described, the process count-up system is selected. |
