一、前言以微机为核心的可编程序控制器(简称PC),是微机和继电器常规控制技术相结合的产物。传统的轻工机械产品,多数以接触器、继电器为主要电气控制手段,优先在这方面推广应用PC新技术,是很有前途的开发方向。回转或双标贴标机(B.T.B)是啤酒自动生产线上张贴双商标的设备。 First, foreword The microcomputer as the core of the programmable logic controller (referred to as PC), is a combination of microcomputer and relay control technology products. Traditional light industrial machinery products, the majority of contactors, relays as the main electrical control means, give priority to the popularization and application of new PC technology in this area, is a promising development direction. Rotary or double labeling machines (B.T.B) are two-brand, dual-label equipment for automatic beer production lines.