Details of the problem:
Hello, our company needs to install the access control system. Currently, there are popular communication modes with RS485 and TCP/IP. How should we choose, using the RS485 networking method or the TCP/IP networking method?
Expert answer:
Hello, the following is the difference between two communication modes
Advantages of RS485:1. The communication length is far away (generally can reach more than 1200 meters), 2. A RS485 communication bus theory can be connected to 127 devices (reducing the number of lines laid).
The advantages of TCP/IP: 1. High-speed communication is almost 100 times as fast as RS485. 2. The communication error rate is very small. 3, the outside interference is also very small.
TCP/IP communication is popular on the market, because TCP/IP is relatively fast and stable, and it is recommended to use TCP/IP communication devices.
In addition, our FC-8900A series access control products support RS485 and TCP/IP communication methods, and our FCARD3500T management system also supports RS485 and TCP/IP network mixing.
