How does Dcs calculate the number of control points in a system?
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We are using a system of medium scale, but I haven’t been in charge for long, so I don’t know how to calculate the number of control points. Please advise, experts!
The number of points in the control system is determined at the time of device design. Of course, a certain level of redundancy is usually required; our company uses around 12% as a standard.
The system should have its own display. Look carefully
Count the input/output cards and their configurations.
It’s also included in the design drawings; of course, if there are any changes later on, it will be clear at a glance in the component configuration
During the design phase, the design institute provides an IO table that includes detailed classifications and total counts; based on this, the configuration of the circuit boards is carried out with a 10%–15% margin taken into account. If taking over the project later on, it is possible to check the as-built drawings, which also contain IO tables; if one wants to see the actual quantities, then it is necessary to go to the configuration environment to check the channel information of the circuit boards directly.
It is generally calculated based on the actual values of DI, DO, AI, and AO signals that enter the DCS, plus a 10% margin
It was decided at the design stage. Generally, there is a 10% spare capacity on the DCS
You are all professionals, and what I would like to ask is: Are control points, monitoring points, I/O points, etc., the same concept?
I/O points are a general term that includes control points and monitoring points. An I/O point refers to an input/output point. Points generally refer to the number of I/O points.
It’s a new project, and I’ve been keeping track of all these aspects, but there were so many things to deal with during installation that I don’t have in-depth knowledge of each detail. Now that maintenance is required, although I know how to handle everyday minor issues, there are still some theoretical aspects that I’m not clear about. Thank you to everyone mentioned above. It is said that the project I’m involved in involves over 4,000 components, and a central control system is used for management