1. A fuzzy monitoring process for monitoring fuzzy control information of a programmable controller having a fuzzy control function and at least one of an input converting module and an output converting module, by using a fuzzy control monitoring device, comprising the steps of: defining at least one of fuzzy membership functions, fuzzy output functions and fuzzy result functions using a definition format comprising a plurality of points and storing data representing said at least one function in at least one of said input converting module and said output converting module; generating data including at least one of first fuzzy grade numbers, second fuzzy grade numbers and a composite fuzzy set based on said at least one function; and monitoring the production of said generated data using said monitoring device.