Time: 4/10/2017 9:43:40 PM

Ethernet cable, crystal head, CONTRONET coaxial cable, coaxial cable connector. PROFIBUS line, PROFIBUS-DP connector. RS232, RS485, DB9 joint. PLC communication, serial communication, Ethernet communication, fieldbus communication. Serial communication, divided into D port and USB port. The D port is nine mouth, called public needle mouth, the mouth is called the mother type, there are three kinds of protocols, respectively: RS232, RS422 and RS485. Through the communication protocol, the link is not the same, not elaborate. Like computer needle mouth, for R.