YT204001-FN ABB

Large and medium-sized PLC systems should support a variety of fieldbuses and standard communication protocols(such as TCP/IP),and should be able to connect with the factory management network(TCP/IP)when necessary.The communication protocol should comply with ISO/IEEE communication standards and be open communication network.

The communication interfaces of the PLC system should include serial and parallel communication interfaces(RS232C/422A/423/40),RIO communication ports,industrial Ethernet,common dcs interfaces,etc.;large and medium-sized PLC communication buses(including interface devices and cables)should be 1:1 redundant configuration,the communication bus should comply with international standards,and the communication distance should meet the actual requirements of the device.

大中型PLC系统应支持多种现场总线和标准通信协议（如TCP/IP），需要时应能与工厂管理网（TCP/IP）相连接，通信协议应符合ISO/IEEE通信标准，应是开放的通信网络。

PLC系统的通信接口应包括串行和并行通信接口（RS232C/422A/423/40）、RIO通信口、工业以太网、常用dcs接口等；大中型PLC通信总线（含接口设备和电缆）应1：1冗余配置，通信总线应符合国际标准，通信距离应满足装置实际要表