| 摘要 |
PURPOSE:To reduce the load of a programmer, by producing freely a relay ladder circuit diagram without being aware off a temporary instruction at all and furthermore adding automatically the temporary instruction when necessary. CONSTITUTION:A desired relay ladder diagram is produced on a display 4 by means of a diagram producing keyboard of an operation device 3. Then a start key is operated to produce a table of connection from a display data. When the table of connection is completed, a serial chain SC is extracted to judge whether a start symbol is connected to a bus. If no connection is obtained between the start symbol and the bus, a temporary instruction is written to judge whether another serial chain exists yet. If no chain SC exists, an assembly is carried out based on the table of connection to which the additional information of the temporary instruction is given, and a conversion is performed into an object program. |
