DCS card configuration issue
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Discussion: 1. A certain device uses a TPS (GUS/HPM) control system. If there are 65 analog input points AI, all of which are high-level input signals of 4–20 mA, and there are 43 analog output points AO, without considering redundancy or margin, the HLAI cards are calculated based on 16 channels per card, while the AO cards are also calculated based on 16 channels per card. If you were to design this, how many HLAI and AO cards would be required at the very least?
The required number of HLAI cards is 65 AI / 16 channels/card = 4.0625; rounding up, at least 5 HLAI cards are needed. The required number of AO cards is 43 AO points / 16 channels per card = 2.6875; rounding up, at least 3 AO cards are needed. .
At least 5 HLAI cards and 3 AO cards are required.
Configure 5 AI cards and 3 AO cards.
Without considering expansion, 5 AIs and 3 AOs are sufficient, along with enough backup nodes； If future expansion is considered, it depends on the specific circumstances. If the company has sufficient budget, anything can be purchased; if the budget is limited, then expenses need to be kept under control.