Abstract:  To follow the present -day trend to integrate the virtual instrument with Ethernet -based measurement -control system‚a virtual instrument measurement and control platform based on Ethernet was proposed‚where the reversed Polish expression and its interpreting arithmetic were used to interpret and transfer the Ethernet -based virtual instrument measuring and controlling strategy described by graphical components during the rerun-ning process．The simulation results show that the application of reversed Polish expression significantly simplify the program from interpreting and transferring strategy scheme to micro commands‚thus saving system resource and speeding up the interpreting and transferring process．

Key words: measurement -control system, virtual instrument, Ethernet, arithmetic, strategy interpreting