It is explained that using CRC error detection code in asynchronous mode can enhance the error control ability of communication system.
说明了在异步通信方式下，可采用CRC检错码提高通信系统的差错控制能力。
MC provides the control function of multipoint communication and selects the communication mode.
MC提供多点通信的控制功能，确定终端间的通信模式。
Realtime control between PC and PLC is realized through serial communication by freeport mode, and the control of temperature and pressure is realized by PLC.
通过上位机pc与PLC以自由口方式串口通信实现PC对PLC的实时监控，并用PLC对温度、压力进行控制。
应用推荐