I/AS与PLC的通讯

The DCS Communication Between I/A S DCS and PLC

工业控制系统中的通讯关联着其所控制的大型设备的安全 ,因此对其可靠性、合理性有很高的要求。详细介绍了用Modbus协议解决I/A′SDCS与ABPLC实现远程通讯的过程 ,介绍了DCS中主系统与子系统PLC的通讯问题 ,并对硬件配制 ,通讯接口的连接 。

Communication of industry control system is related to the safety of equipment,the dependable and reliability is more important.The article introduces communication between I/A S DCS and AB PLC with Modbus protocol,including it's hardware,communication interface,programming,etc.