Look at the function of the plc controller from the venue
PLC is also called PC, but it does not mean a personal computer, but a programmable logic controller, which is a commonly used tool in the industrial control field. The PLC can change the internal control content at any time through the programming software, and it is more flexible in application than the traditional relay controller. Nowadays, as long as the control content is more complicated, everyone generally uses PLC to operate, which is really a peace of mind, and problems can be solved. As for the relay controller, you are good, but you are not suitable for complicated things.
There are many IO interfaces on the PLC, that is, the so-called information output interface. By connecting these IOs to the equipment that you want to control, the PLC can use one controller to command and remotely control multiple equipment or even a production line at the same time. IO can issue and retract control commands, so who can make PLC realize the above functions? In other words, how does the host computer of the PLC control the PLC? Therefore, the communication bus is indispensable. The user connects the PLC host computer and the PLC itself through the communication bus, and publishes the control instructions to the PLC through the communication bus, and then the PLC turns this instruction into other information carrying forms, such as The voltage and current pulses arrive at the target device through the output interface, the target device runs, and sends back an instruction to the PLC at the same time, of course, through the data input interface. After the PLC receives the input data just obtained, it transmits it to the host computer through the communication bus again. Even if such a cycle of control action is completed, in fact, the PLC is constantly cyclically performing such actions, depending on how you design the content.
From the above introduction, we can see that the data communication method of PLC is also very important. You can use more advanced ones to replace the old ones. You must be welcome. So, why don't you try CAN interface PLC? Shenyang Guangcheng Technology GCAN-PLC welcomes your inquiry. Shenyang Guangcheng Technology GCAN-PLC is a bus module controller integrated with PLC functions. It has the characteristics of exquisite appearance and high cost performance. It can be used to connect CAN bus systems, Modbus systems and distributed bus terminal modules, and these terminal modules can be expanded in a modular manner.
GCAN-PLC series products consist of a programmable main control module (GCAN-PLC-400), several GC series IO modules (GC-1008, GC-3804, etc.), and a terminal terminal module. The GCAN-PLC-400 main control module can be connected to all GC series IO modules. The user can choose the expansion IO module according to the actual needs of the site. The number of expansion IO modules can reach 32. The GCAN-PLC-400 main control module supports automatic configuration. The user does not need to set parameters on the PC. The main control module will be automatically configured according to the front and rear positions of the inserted terminal module.
GCAN-PLC can be programmed with OpenPCS software. The software supports five standard programming languages specified in the IEC-61131-3 standard, which makes the program portability and reusability strong, and the software also has Multiple debugging functions (such as breakpoints, single step, monitoring, etc.) make debugging programs more convenient.