The motherboard of the 140CPS12400 CPU integrates a variety of communication interfaces, and the PCC is also a highly open product configured with a variety of communication modules. 140CPS12400 uses a single-task clock scanning or monitoring programme (except for certain high-grade PLCs, such as Siemens’ S7-300/400 series, Rockwell’s ControlLogix series, etc.) , to handle the logic operation instructions of the programme itself and the state acquisition and refreshment of the external I/O channels, the whole application is contained in one loop cycle (as shown in Figure 1).

140CPS12400 in a control system, although there are some process quantities of real-time requirements are very high, but at the same time there are more process quantities of real-time requirements are not special, if the same refresh rate to deal with them in fact is a waste of system resources, and the circular scanning mechanism also leads to the system’s processing cycle is mainly dependent on the size of the application, such as program complexity If the programme is complex and large, the scanning cycle is inevitably longer, which is undoubtedly contrary to the high real-time requirements of the I/O channels.

140CPS12400 invested in a lower cost, basically do not have to change the hydraulic system, so that the transformation of the whole set of compact structure, stable and reliable operation, control welding and easy to operate, enhance the level of automation, reduce labour intensity, and produce good economic benefits. Today’s world, science and technology is changing rapidly, the cycle of product renewal is getting shorter and shorter. Take the reinforcing mesh welding machine for example, its automation is getting higher and higher, the operation is more intuitive and safe, and very few people can complete a large amount of work. In the future, it will move towards the direction of steel straightening, welding, cutting mesh to size, turning mesh and stacking mesh organically combined into one.