At last, the communication program applied in Master-Slave control system base on MODBUS protocol is designed.
最后设计应用于主从式控制系统的通讯程序，这个程序是基于MODBUS协议的。
Secondly, Single-Chip computer system soft design under host and slave mode of CH375 is introduced, and the paper shows the flow chart, the program design in detail and some codes.
其次，介绍了CH375主从模式下单片机系统软件设计，并给出了部分源代码和程序流程图；
The drive program and the system managing function of PC are completed, the management and inspection of slave computer are realized by using Windows Driver Model (WDM) and VC developing environment.
运用WDM驱动模式和VC开发环境完成了PC 机端硬件的驱动和系统管理功能，并实现了对下位机的监测和管理。
On the basis of analyzing the data of the internal communications of the device, the communication program both the master and the slave is given.
在分析本装置内部通信数据的基础上，分别给出了主机和从机的通信程序。
On the basis of analyzing the data of the internal communications of the device, the communication program both the master and the slave is given.
在分析本装置内部通信数据的基础上，分别给出了主机和从机的通信程序。
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