CAUSE EFFECT DIAGRAM PROGRAM MAINTENANCE DEVELOPMENT AND TEST SYSTEM

摘要

A computer system (1) for generating a cause effect matrix as a user interface (14, 16, 19) to develop a control program (7) based on the cause effect matrix and to compile (107) and download (108) the resulting program into a programmable controller. A cause effect matrix diagram is used to develop a function block diagram program which is a standard IEC 1131-3 language. The function block diagram (29) is translated into structured text which is compiled into intermediate code (105). The intermediate code is translated into the native code for the micro-processor of the target control system, including but not necessarily limited to the Motorola processor MPC-860. The automation of a cause effect matrix diagram to generate a function block diagram permits additional capability by allowing functions (24, 26) for causes (15), intersections (19), and effects (17). Because special functions may be included, the results of a cause generate timing functions or other computations before initiating the effect.