| 摘要 |
<p>PURPOSE:To perform accurate monitoring operations without giving any influence to the operation of a programmable controller (PC) by judging realization of a condition whenever sequence calculated result is outputted from a processor. CONSTITUTION:A processor 10 which executes data communication between each section of a PC and an object to be controlled connected to the PC and processing of the data and controls the whole body of the PC and object to be controlled is coupled with a program loader 11 through a transmission line 19 for transmitting and receiving data. A condition realization decision circuit 17 which decides the coincidence between the content of an operated result storage circuit 14 for storing operated results of a sequence arithmetic circuit 13 and the content of a condition storage circuit 18 by comparison generates a trigger completion signal when the contents of the circuits 14 and 18 coincide with each other. The processor 10 performs sequence operation on each step of a sequence and, whenever the processor 10 obtains an operated result, whether or not a condition can be realized is decided on the result. Therefore, accurate monitoring can be performed, since the display of a monitor is surely stopped when a set condition is realized.</p> |
