The PLC job in numerical control machine tool flow

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The PLC job in numerical control machine tool flow, and normally PLC work flow basically is consistent, cent is the following measure: (1) input sampling: Input sampling, it is the signal condition that the means that PLC scans with order reads in all input port, and this condition, in reading in input image register. Of course, in program cycle of run these signal condition won't change, unless a new scanning comes periodicly, and carry state of oral message name so had changed, the signal condition that reads input image register just can produce change. (2) the program carries out: System of program executive phase can undertake to the program specific sequential scanning, and be read in at the same time input area of check of image of image check area, output read take relevant data, after having relevant operation, stock operation result area of output image check to be used for output and moving next time. (3) give refresh level: In place the instruction is carried out after finishing, all outputs relay condition that output image check area (put through / disconnect) in output refresh phase turns put in outputting Suo Cunqi, pass specific means output, drive is exterior and laden. CNC Milling CNC Machining