Ethernet to RS485 Converter application
RS485 interface has good anti-noise interference, long transmission distance, and multi-station ability, which makes it become the preferred serial interface, and RS485 can carry multiple loads, as long as the program is slightly modified, it can be realized that one PC monitors multiple lower computers, in the daily measurement calibration, inspectors can touch a large number of instruments and meters. Most of the intelligent instruments are equipped with RS485 communication ports. Ethernet to RS485 Converter has become the network communication interface of various industrial equipment because of its low cost and simple implementation. It plays an important role in industrial control. This paper introduces the typical application of Ethernet to RS485 Converter in industrial control.
1. Application of Ethernet to RS485 Converter in Industrial Line Control System
Each processing control platform of the factory assembly line needs to monitor the relevant parameters in real-time, for example, the chemical plant needs to monitor the temperature, humidity, PH value, and other information in each reaction pool in real-time, the intelligent instrument or system located in the processing link feeds back the information to the monitor, and the monitoring system can judge the information to ensure that each processing link is controlled. as to realize accurate control and unattended operation and greatly save manpower and cost. A typical temperature monitoring platform system, this system can monitor the temperature in each link in real-time and can draw real-time curves and historical curves, so that technicians can analyze the quality of products by viewing the historical temperature data.
2. Application of Ethernet to RS485 Converter in Mine Operation Safety Monitoring System
With the wide application of automation equipment in modern mine enterprises, underground power supply equipment, underground toxic gas, and flammable, and explosive gas monitoring has become an important support for underground safety production and control. The stable operation of the underground safety production monitoring system is the premise of safety production. The underground monitoring system is a kind of mine automation system, such as remote centralized monitoring of the operation status of underground power supply equipment and the concentration of toxic and explosive gases, so as to formulate corresponding measures and eliminate faults in time to ensure production safety.
The typical coal mine gas concentration monitoring and alarm system based on Ethernet to RS485 Converter mainly include monitoring equipment, a monitoring substation, a dispatching console, and a monitoring room, among which the system monitoring equipment mainly completes the acquisition and processing of underground gas concentration and temperature data. Then the data can be transmitted to the monitoring substation through the RS485 bus and finally transmitted back to the ground monitoring room, The ground monitoring room will analyze and store the data. According to the alarm rules set by the system, when the gas concentration and temperature exceed the specified upper limit, the system can automatically send out an alarm signal. According to the alarm signal, the ground monitoring room can take safety measures in time.
3. Application of Ethernet to RS485 Converter in Greenhouse Control System
Greenhouses can create a suitable environment for crop growth, which is not affected by season and region, so as to achieve all-weather and off-season crop production. Modern greenhouses use distributed monitoring system, which is usually a host computer + lower computer mode. Information is transmitted through the communication system. The host computer is used for system management, which is mainly composed of database management, communication management, control decision generation, and other functional modules. The lower computer is located in the greenhouse control field, which is composed of sensors, front-end controllers, and actuators. In the distributed greenhouse monitoring system, the signal transmission distance is up to tens of meters or even thousands of meters, and there is a large amount of data transmission between the monitoring nodes distributed in the field and the operators. A typical greenhouse field control system.
The distributed data acquisition system based on Ethernet to RS485 Converter has the advantages of a simple connection circuit and low cost of equipment. The system realizes the measurement and display of temperature, humidity, CO2 concentration, and other data for the field monitoring node, and controls the environmental factors in the best range of crop growth.
Ethernet to RS485 Converter helps reduce application cost, improve reliability, simplify design, and miniaturize meters.
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