1, switch control
The switch control of PLC is widely used in automatic production line. The number of controlled access points varies from tens to tens of thousands, and it can perform logical control such as combination, sequence, real-time, delay, no counting, counting, fixed sequence and random work.
2. Analog control
Temperature, pressure, flow, liquid level, speed, current, etc. Are constantly changing analog quantities. Generally, PLC has matching A/D and D/A conversion modules to control analog quantity, so as to control production process and equipment operation.
3. Motion control
The displacement of machine tool parts is usually expressed by digital quantity and controlled by PLC. It is also used in elevators and industrial robots to control repetitive mechanical equipment.
4. Process control
Process control is widely used in metallurgy, chemical industry, boiler control and other scenes to realize closed-loop control of temperature, pressure and flow.
5. Data processing
PLC can complete the data collection, analysis and processing of production equipment, and complete certain control operations, which are widely used in papermaking, metallurgy, food and other industries.
6. Communications and networks
Communication and networking can be carried out between PLC and PC, and data transmission can be carried out through interfaces and network ports, which can better monitor and manage PLC remotely.
According to the application scenario of PLC equipment, Wu Tong Bolian has developed a remote monitoring scheme for PLC data acquisition, which can collect the data of major brands of PLC in real time and realize networking through 5G/4G/WIFI/ Ethernet.
Upload PLC operation data to industrial cloud platform, customers can remotely monitor PLC, and can also remotely diagnose and maintain PLC, thus improving work efficiency and reducing costs.
Advantages of PLC data acquisition gateway;
1, rich networking and transmission functions.
Support network access modes such as 5G/4G/3G/WIFI/ Ethernet, network port/serial port /IO port /CAN port and other devices, LORA wireless transmission, disconnection and reconnection, and multi-network backup functions.
2. Protocol parsing and data acquisition
Embedded protocol analyzer supports mainstream industrial control protocols and customized specific protocols (such as PLC protocol, instrument protocol, power protocol, industrial robots, machine tools, etc.). ); Embedded with the patented algorithm of Internet of Things, it can efficiently and stably collect and control the data of various industrial equipment.
3, PLC remote monitoring
After data collection is realized through the industrial gateway, it can be converted into MQTT protocol and uploaded to the cloud platform, providing data strategies such as electronic map, equipment management and environmental parameters, and providing remote monitoring means, which is helpful for timely control and management.
4, PLC remote maintenance
Through the remote maintenance module and the equipment express line, PLC can be remotely connected, and a safe and stable maintenance channel can be constructed, and the operations such as program download, remote configuration, remote debugging and program update can be carried out.