10/28/2018 12:34 PM | |
Posts: 51 Rating:
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I'm now most of the way through decoding and cross referencing the PLC program for my 820T GA2 controlled lathe where I have a couple of issues to sort, but I keep coming across references to 'VDI' signals. This decoding has been successful in resolving a 'Read in Enable' issue and now I'm onto the next problem (M19) From their context I presume that they are signals between the NC and the PLC but nowhere can I find an explanation of why they are called VDI and what it stands for . . any one help here ? Is there a document in existence that details the Q's and I's and F's between the PLC and the NC for an 820T? I'm particularly interested in the interactions when an M19 is active, I can find generalities but tying it down to specifics is eluding me. I attach the PLC program's main block in .PDF form with annotations as far as I have managed so far. AttachmentPB202_LABELS_E.pdf (76 Downloads) |
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