常見例句雙語例句The system adopts single main-station to control the serial ports under free port mode.系統(tǒng)采用單主站方式,在自由口模式下控制串口。How to implement serial communication between S7-200 PLC and computer based on free port mode was described in detail in the paper.詳細介紹了在自由口模式下S7-200 PLC與計算機實現(xiàn)串行通信的方法,重點介紹了通信協(xié)議及其實現(xiàn)方法,并給出了編程實例。This paper shortly introduces the network communicating function of S7-200 series PLC, gives the programming instance that use its free port mode to communicate with Modem.本文簡要介紹S7- 2 0 0系列PLC的網絡通訊功能,給出了采用自由口模式與調制解調器進行通訊的編程實例。 返回 free-port mode