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PLC with CAN bus? This is real!

PLC is a module used in industrial production. The scientific name is an Programmable logic controller. Generally speaking, it is a programmable main control module, several I/O (input and output) modules. The main control module uses a high-speed CPU and has powerful computing and processing capabilities. It is widely used in various industries such as steel, petroleum, chemical, electric power, building materials, machinery manufacturing, automobile, textile, transportation, environmental protection and culture and entertainment. However, why is it so widely applicable? Compared with the previous industrial control system, what are its extraordinary strengths? Let's take a brief look at it first.
PLC with CAN
Metallurgical industry using PLC equipment
 

 
Before the advent of PLC, the most popular remote control system on the market was relay control. Simply speaking, it used a relatively small switch to control a large switch with high risk. The large switch directly touched the production equipment. For a long period of time, relay control is the mainstream, but with the evolution of the human industrial society and the optimization of production methods, the relay control method with a long history has also appeared many unrecoverable shortcomings, such as:
 
(1) The size of most relay control devices is relatively large (compared to PLC control). The above circuit is bloated and complicated, and the construction time is relatively long. For some projects with high time requirements, this disadvantage is Very unfavorable.
 
(2) Also because of the circuit structure of the relay control equipment, it is extremely prone to the problem of mutual influence between the lines. Once an error occurs, the repair personnel often need to check one by one, and the workload is self-evident.
 
(3) The modification or removal of the relay control equipment is not easy. As with the relay construction problem mentioned above, its own characteristics make it less likely to change in a short period of time, and it does not support networking operations. In more complex projects, it is really difficult to play a role.
 
It is precisely because of the above shortcomings of the relay control that the PLC control comes to the fore. Compared with relay control, PLC has higher reliability and stronger anti-interference ability. It runs fast and is fully functional, enabling complex control functions. In order to adapt to the real working environment and respond to different work requirements, it adopts a modular structure and can be freely expanded according to the situation. Its programming is simple and easy to use. It is convenient in designing, installing and debugging the system, which reduces the workload of the staff and can modify the user program without modifying the hardware and modifying the process. It is easy to maintain and has a small maintenance workload. Compared with the relay system with the same function, it is cost-effective and basically meets all the needs of industrial control personnel.
PLC with CAN

PLC with CAN bus will be more popular
 
 
 
Because PLC has so many advantages, it makes PLC research and production in all domestic and foreign industrial control related manufacturers, but there is also a problem: that is, most PLC only have 485(modbus) interface. And the network port does not have CAN, and the CAN bus is one of the most advantageous industrial buses at present, and is the most suitable system for remote industrial control. The most suitable system can't match the best equipment, then we can only buy expensive PLC with CAN port? No! GCAN also implement PLC with CAN bus interface, and this is true! Also very competitive.
PLC with CAN

If want more about PLC with CAN, please click the link below:
http://www1.gcanbox.com/fsd/gyzdh/255.html
 
GCAN-PLC with CAN port PLC device is a modular and arbitrarily expandable PLC module. The module consists of a programmable main control module (GCAN-PLC-400), several I/O modules and a terminal terminal module. The main control module uses a high-speed CPU with powerful computing and processing capabilities. The main control module also has three fieldbus communication interfaces: Ethernet, RS232/485, and CAN. Users can use these communication buses to access the corresponding network to communicate with other devices. Really realize the desire of PLC with CAN port.


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