DCS and PLC
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How to choose between DCS and PLC? There are 20 points in total – which one is better? Thank you
Choose the PLC; it has a smaller number of I/O points.
For a 20-point system, a PLC is still the better choice; of course, options like Honeywell’s HC900 can also be used
It’s still better to choose a PLC in 20 cases
If no further expansion is planned, 20 point-selectable PLCs will suffice, or an analog meter can be used instead (if interlocking is required, relays can be employed)
For just 20 points, there’s no need for a PLC; regular instruments will suffice.
To be specific, is there control? It is recommended to use a controller. The Zhejiang Zhongkong C3000 controller is inexpensive and practical
Generally, when the number of points is low, PLCs or DCS systems are chosen; DCS systems are used for situations with a large number of points. PLCs are typically used for control circuits, while they are not suitable for circuits with too many switching elements