Host computer is a term widely used in the field of industrial automation control, which refers to the computer system used to monitor and control the host computer (such as PLC, single-chip microcomputer, inverter or embedded system) in the local automation control system. The host computer can communicate with the host computer through various communication protocols (such as RS485, RS232, Ethernet, etc.), obtain the running status or process parameters of the lower computer, and send control instructions to achieve convenient operation.
For example, in the automation system of the sewage treatment plant, the host computer can realize the configuration monitoring of the sewage treatment process, realize the visual monitoring and management of various equipment and various parameters on the process, and at the same time, the host computer can also monitor the operation status of the entire factory automation production line, display production data, and interact with the MES system.
Wutong Bolian provides a PLC data acquisition system based on PLC intelligent gateway, which realizes the data collection of PLC lower computers such as Siemens, Mitsubishi, Omron, Schneider, Delta, Inovance, Beckhoff, etc., and uploads it to the local configuration upper computer through WiFi Ethernet and other ways to realize the visual display, alarm monitoring, real-time control and management analysis of various data, etc., with good scalability and convenience.
System features. 1. Data communication.
Real-time communication is usually carried out between the upper computer and the lower computer through various communication protocols, and the PLC intelligent gateway of Wutong Bolian supports RS232, RS485, Ethernet and other interfaces, and is connected to the host computer through TCP, MQTT and other protocols to ensure that the data can be transmitted between the upper computer and the lower computer accurately.
2. Edge computing.
The gateway can perform edge computing on various data collected at the edge of the network, such as intelligent collection, data filtering, alarm calculation, jump triggering, formula calculation, and grouping policies. After the model establishment of the device and the standardization of the data, the computing pressure of the local system is greatly reduced, and the robustness and high concurrency of the system are improved.
3. Control the distribution.
The gateway has the function of two-way communication. In the interface of the upper computer, the user sends control commands to the lower computer according to the needs, such as starting and stopping the equipment, opening and closing the valve, modifying the parameters, etc., so as to quickly manage and control the equipment when it alarms, and ensure the safe and stable development of on-site work.
4. User interface.
Through the privatization deployment of the local host computer, users can view the equipment operation status, process parameters, alarm information, operation and maintenance work orders, etc., as well as view the configuration screen, monitoring screen, etc., and query multi-dimensional data reports at any time for management control and data analysis.
5. System interaction.
In addition to the deployment of the configuration system, the host computer may also deploy local software, MES system, ERP system, etc., the PLC intelligent gateway provides an easy-to-integrate API interface, so that users can quickly build an advanced and professional industrial application system to achieve the sharing and management of production data.