Should I choose DCS or PLC?
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If high-risk processes are involved, I will require the owner to use DCS； It does not involve high-risk processes at the moment, but considering the automation used in high-risk processes, should we use PLC or DCS? I’m not quite sure whether to use DCS or PLC for a project – could you give me some guidance?
Refer to http://zhidao.baidu.com/link?url=q17fP7F14_iRHhuQ8bQJ1DiUNX-ac9HIoJj-IHorRpikE7Ex7pwVPD71ZeHE5-Sj583YQNGh2cqSSHTviP2YRK
Determining whether to use a DCS or a PLC for the control system is not as simple as what the original poster suggests. First, it is based on the control characteristics and scale; second, on the owner’s investment; third, on reliability and safety; fourth, taking into account the owner’s usage habits, etc.
Controlling the number of points, that is, the scale, is key to choosing between PLC and DCS.