Pipeline arithmetic unit, programmable logic controller, and how to execute pipeline processing

摘要

PROBLEM TO BE SOLVED: To realize a pipeline arithmetic unit capable of efficiently executing pipeline processing as a whole. A pipeline calculation device (110) includes a calculation unit (120) composed of a pipeline, a node monitoring unit (161) for acquiring a node processing time, and a queue monitoring unit (162) for acquiring a stored message amount. , Priority variable calculation unit (163) that calculates the priority variable of the node based on the node processing time and the accumulated message amount of the reception queue in the previous stage of the node, for each node according to the priority variable. It is provided with a time allocation unit (164) for allocating operating hours. [Selection diagram] Fig. 1