3500/15 106M1079-01 | BENTLY| Communication protocol microcontroller

Description

3500/15 106M1079-01 | BENTLY| Communication protocol microcontroller

Some people say this is a pseudo problem. Microcontrollers are components, while PLCs are systems composed of components and massive software, and there is no comparability between the two in this regard. This statement is not wrong. Most 3500/15  control chips are actually microcontrollers, which means PLC can be seen as a secondary development of microcontrollers. In terms of industrial protection level, the stability and reliability of microcontrollers cannot compare to IP67 products like PLC (IP is marked with letters, the first marked number represents contact protection and foreign object protection level, and the second marked number represents waterproof protection level). Moreover, a redundant system has been developed for products like PLC that can cope with harsh industrial environments. If the comparison between stability and reliability is meaningless, then we will analyze it from other aspects.
The I/O points of a microcontroller are really limited, but what about a PLC? For different on-site signals, there are corresponding I/O points that can be directly connected to industrial devices such as buttons, switches, sensing current transmitters, motor starters, or control valves, and connected to the CPU motherboard through a bus. Almost any production line in industry has hundreds or even thousands of 3500/15 points, which cannot be compared to microcontrollers.
A complete industrial production line not only includes control, but also communication, upper level, configuration, motion control and display, etc. These things need to rely on a complete industrial system and communication protocols, such as Siemens PROFIBUS-DP communication, Mitsubishi Heavy Industries CC-LINK, and so on. The communication between 106M1079-01and PCs, as well as between microcontrollers and microcontrollers, mostly uses serial ports. The serial port of the microcontroller is a full duplex asynchronous communication serial port. Can communication protocols such as MODBUS, PROFIBUS, CAN open, Ethernet, etc. be implemented one by one by the microcontroller? Perhaps microcontrollers can do it, but this involves the next analysis point, the development cycle.