Design of User Program Interpreter for Fieldbus Intelligent I/O Module
Jin Hong · Jisuanji gongcheng · 2011
In the hierarchical control system,intelligent control devices place in the pot performance layer.The devices receive the user orders or program from the upper class control devices by intelligent control devices.These orders and user program need converse,so they are carried out by Micro Control Unit(MCU) of intelligence node.It puts forward the program design method,though the analysis of the user program function,type,phrase and sign,made use of the principle of limited status machine.The program which can be explained and executed is as a UCOSⅡtask and constituted the intelligent control software with other task programs.Through the test,the result proves that the explain machine can explain and execute the user programs correctly,it also can independently execute the control task based on the spot environment.