ABB NGPS-12 公司自成立以来始终坚持以纯电子商务模式运营、缩减中间环节、为客户在第一时间提供优质的产品及满意的服务

Relying on advanced industrial network technology can quickly and effectively collect, transmit production and management data. Therefore, the importance of the network in the automation system integration project is becoming more and more obvious, and some people even put forward the view that “the network is the controller”.
PLC has the function of communication and networking, which enables the exchange of information between PLC and PLC, between PLC and upper computer and other intelligent devices to form a unified whole and realize decentralized centralized control. Most PLCs have an RS-232 interface, and some have built-in interfaces that support their respective communication protocols.
The communication of PLC has not yet achieved interoperability. IEC stipulates a variety of field bus standards, which are adopted by all PLC manufacturers.
For an automation project (especially a medium and large-scale control system), it is very important to choose a network. First, the network must be open to facilitate the integration of different devices and the expansion of the future system scale; secondly, according to the transmission performance requirements of different network levels, the form of the network must be selected, which requires a deeper understanding of the network standard protocol, Under the premise of the mechanism; thirdly, comprehensively consider specific issues such as system cost, equipment compatibility, and site environment applicability, and determine the network standards used at different levels.