1756-L73 AB

The upward connection of the network is an internet problem, and the downward connection is a fieldbus problem. In addition, the existing network can use Ethernet “e network to the bottom” mode, the network can use client/server mode, browser/server mode, producer/consumer mode, and the interface software can use OPC mode, all of which need to be further implemented

PLC and intelligent MCC motor control center, NC/CNC numerical control equipment matched with CNC machine tools, as well as systems connected with other operation control systems, electronic control equipment, frequency converters, and soft starters

PLC should cooperate with DCS and act as a remote I/O station for DCS; PLC needs to cooperate with IPC for division of labor. In addition to using IPC as the human-machine interface, it is also feasible to use IPC as the I/O component of software PLC; In addition, the relationship between PLC and emergency shutdown safety systems (ESD)

as well as the relationship with three-dimensional warehouses, robots, CAD/CAM, and so on, must be well handled. In short, PLC should be compatible with various new technologies, making it a true “computer”.

The application field of PLC is broad, and there are many areas that urgently need to be explored, such as for customs transit vehicle certification (Shenzhen Yantian) and automatic drug sales (several traditional Chinese medicine stores), which have already been examples in China

In addition, in discrete event systems, such as highway network traffic flow (vehicle counting, passenger counting, and residence time measurement), logistics systems, flexible manufacturing systems (agile manufacturing systems), and all non-standard on-demand service systems, PLC can be used to model, take countermeasures, and optimize.