PLC, also known as Programmable Logic Controller, as the name implies, is a control device and also has the function of editing. Its emergence is a practical need, because the traditional relay control method has been difficult to adapt to the development of modern industrial production in many aspects. In order to better compare the advantages and disadvantages of the two sides, we compare several aspects to let everyone know the advantages of PLC. place.
2. As mentioned above, there are many circuits controlled by the relay, occupying a large space, and installation and disassembly are time-consuming and labor-intensive, which makes the production cost soar. At the same time, in some projects with frequent changes to production, the relay is not competent, you have to wait slowly. Here the advantage of PLC is even greater, it can be changed quickly in a short time to meet the specific needs of the producer.
3. PLC can be programmed. In fact, we can see this from the name of PLC. It is also very important to edit the logic controller. By writing different instructions to the PLC control module, one module or a combination of multiple modules can play countless roles in different projects. Various digital input and output modules and analog input and output modules have their own characteristics, and can be used repeatedly, which greatly improves the efficiency of workers' work, and also reduces the cost of use, and the cost performance is very high.
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Emerson |
ABB |
SLC500:1747/1746 |
EPRO AMS 6500 |
DCS 800xA |
MicroLogix:1761/1763/1762/1766/1764 |
MMS 6000 Systems |
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AMS 6500 |
H&B Freelance |
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MMS 6000 |
BAILEY-INFI90 |
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