Regarding whether tags can be used to reference CS3000AI/DI channels
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May I ask whether symbolic TAGs can be used to reference the channel values of input/output cards in CS3000? For example, %Z021102 in the figure represents the values of 2#NODE, 1#slot, and 2#channel. Then, in the definition of the corresponding I/O cards, can TAGs with procedural meanings such as PI001 be used instead? If possible, should it be in the tag name field or the label field? Thank you! By the way, what element does %BL6722 in Figure 2 represent? (Search window)
BL is the abbreviation for BLOCK. In the 3000 system, variables, function blocks, etc., all have symbolic addresses and absolute addresses. In your screenshot, TMZ is a symbolic address, %BL6722. Everyone uses symbolic addresses; absolute addresses are only used for internal labeling and can be ignored outright.
DI directly references the tag name, while AI refers to its LABEL
Do the LABELs in digital channels and those in analog channels have different meanings?
Thank you to master budaoweng123 for his help!