Regarding DCS replacing PLC
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Dear seniors, I would like to ask you: Our company’s equipment is a combustion system that has always been controlled by a PLC, with communication to the DCS. Currently, a client requires us to handle all control functions through DCS (using DCS instead of PLC). Does this mean we have to rebuild our system using DCS? Is there no way to import our program? Or are there any modules in DCS that provide an environment similar to that of PLCs and can be utilized? Additionally, is the fuzzy control algorithm in DCS well-developed? Since I don’t know much about DCS, I’m seeking advice from everyone.
No problem, DCS has more sophisticated control algorithms and more features!
The DCS system has many modules; they’re quite simple. There seem to be some others as well, but I haven’t used them. . . . :lol
You have a thorough understanding of the logic and sequential control in PLCs. Just configure it in DCS and that’s it. If timing control does not require millisecond-level precision, DCS is more than sufficient. If strict requirements are placed on control capabilities and scanning cycles, it is recommended to pay close attention to the CPU specifications when ordering a DCS. DCS can completely replace PLC
It should be possible, right? By moving the on-site control to the main controller, whatever can be controlled on-site can also be controlled by the DCS
But setting up a new program also requires testing, which is time-consuming. Is there a way to use the program in the PLC directly? Do PLCs and DCSs have different underlying interfaces, making compatibility completely impossible?
No, it is necessary to reconfigure the program in DCS. The control logic that can be implemented by a PLC can also be implemented by a DCS. It is also important to pay attention to the scanning cycle of the DCS system; if there are control requirements at the site that demand rapid response, then the scanning cycle of the DCS system needs to be increased. Modern mainstream DCS control systems are all capable of adjusting the scanning period.
In DCS, recreate the logical control program from the original PLC.
It is not allowed; the furnace belongs to the fire system. It should be separated from DCS
PLCs and DCS are completely different things; the programming languages used are also entirely different, so it’s impossible to use them directly. However, DCS is considered a substitute for PLCs. If you are unable to do this, it is recommended to outsource the task to a DCS manufacturer; among those available in China that are mature in technology and offer reasonable prices, Zhejiang University Zhongkong is a good choice. You can also take the opportunity to learn more about it.