| 摘要 |
PURPOSE:To perform the control of programmable controller at a high speed by securing the asynchronous actuation with a condition monitoring memory between a part where the conditions of the programmable controller are decided and a part where a job is actually carrier out. CONSTITUTION:A programmable controller includes a condition control part 1, a job executing part 2, a condition monitoring memory 3, an input interface 4, and an output information memory 5. The part 1 consists of ladder processor an supplies a signal element from the interface 4 for decision of conditions and holds the state of each signal element as a new condition while a processor of the pat 2 carrier out a program described in a process advances type according to the contents of the memory 3. The difference processor s used between both parts 1 and 2 and the independent processes are carrier out between them. As a result, the condition control processing and the execution processing can be carrier out separately from each other at a high speed and with high efficiency.
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