Regarding the output issues of Zhejiang University Zhongkong AO
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I’ve been using Zhejiang University’s Zhongkong programming tool recently, and I noticed that when AI is used, the address values can be displayed directly by connecting them to the upper-level addresses. However, the outputs from AO require the XXX.MV suffix – they all have to end with MV. Is that necessary? I looked at the previous programs developed by Zhejiang University’s Central Control System; in those programs, all AO outputs made use of the BSCX block, with the valve position outputs for those AO signals being written to the MV pins. So I wonder whether it is necessary to use the BSCX block for all AO outputs, and to write the corresponding values to the MV pins When using this block, apart from the need to connect MV and N, what are the requirements for PV? Are there any other ways to get AO output?
Yes, for example, if I need to output an analog signal from DCS to another system, then this analog signal is generated via AO. I define this address A on the AO card, and then use the MOVE module to transfer the variable or address that needs to be sent to this address A; there’s no need to use the BSCX block.