The communication protocol between master control units and data units is simple and easy to implement.
主控制器和现场控制单元的通信协议设计简单、易于实现。
2
Since the protocol for RS232 is simple, RS232 has been widely used in various equipment to collect and control the signal data in industrial control system.
由于RS232通信接口协议简单，工业控制系统已广泛应用RS 232口对各种设备进行信号采集和控制。
3
By the use of this protocol, a simple and reliable serial communication program can be designed to satisfy the need of data serial communication between the devices in automatic control system.