Abstract:In order to reduce the failure rate of tool selection from ACT on machining center, a technology based on FANUC I/O-Link axis peripherals was presented. The cutter disc was indexed and positioned by the servomotor. Then the format and function of the function instructions, address assignment, parameters setting and PMC program design were introduced. After electromechanical setting, higher positioning accuracy of the selected tool, higher reliability and shorter time of changing tool are realized.