What is the function of serial port server ?
Serial port server is simply a network communication interface conversion device. It can convert our common RS-485, RS-232, and RS-422 serial ports into TCP/IP network interfaces to realize RRS-485, S-232, RS -Two-way transparent transmission of data between the -422 serial port and the TCP/IP network interface. The serial port server can enable conventional serial port devices to have TCP/IP network interface functions, thereby connecting to the network for data transmission and communication. This is the role of the serial port server.
Application of serial port server in industrial automation
What is mentioned above is the concept of the role of the serial port server. You may not be able to understand it just by looking at the concept. So let’s learn about the serial port server through an application case. For example, in an industrial automation production line project, the production chain data can be monitored in real time and the serial port server can be connected to the pulse counting sensor. Production line quantity monitoring via pulse counting.
At the same time, with the continuous development, the serial port server is no longer a simple serial port server, no longer only RS232 and RS485 interfaces. In order to meet different application needs, the serial port server of Zongheng Intelligent Control has also added DI and DO interfaces, and has been upgraded to An Ethernet network IO controller. Through the newly added interface, the motor can be connected through the output interface for start and stop control.
Serial port server functions
The one introduced below was developed by Chengdu Zongheng Intelligent Control. It adds DI, DO, AI, and AO interfaces on the original basis. Strictly speaking, it should be called Ethernet RTU , which can meet more application scenarios. The model number is ZHC1921.
ZHC1921 is a network IO product that supports 6-channel dry (wet) node detection, 4-channel relay (COM, NO) output, 4-channel analog quantity (current 4~20mA) detection, and one serial port transparent transmission. It is compatible with Modbus RTU/ TCP protocol. With “remote control” as the core function and high ease of use, users can easily and quickly integrate it into their own systems to achieve remote, LAN and local control based on Ethernet and RS485.
Main advantages
1. relay output
2. 6 DI (dry/wet node) inputs
3. 2-way PI (pulse) counting
4. 4 analog (current) inputs
5. TCP_Client/ MQTT_Client/ TCP_Server
6. Modbus RTU/TCP
7. Host and slave modes. The host mode supports RS485 cascading of multiple devices.
8. Cloud forwarding and cloud networking
9. Local logic, inter-device logic
10. Network registration package, heartbeat package
11. Hardware watchdog
12. Remote configuration and remote upgrade
13. PC, web page
14. Data triggering and regular reporting
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