Siemens SINUMERIK 840D sl Function Manual

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Detailed Description2.1 General functionalityBasic logic functions: Travel to fixed stop (F1)26 Function Manual, 11/2006, 6FC5397-0BP10-2BA0Terminal 663When pulse enabling is canceled by terminal 663, the drive is deenergized and coasts to astandstill immediately.In the case of:MD1012 $MD_FUNC_SWITCH, Bit 2 = 0this is not signalled to the NC.The status can be checked in the line "Pulse enable" (terminal 663) in service display servicedrive.NoteTravel to fixed stop can be aborted by blocking the pulse of NST " DB31, ...DBX21.7 ("Pulseenable") or the terminal 663 only, if:MD37002 $MA_FIXED_STOP_CONTROL, Bit 0 = 0andMD1012 $MD_FUNC_SWITCH, Bit 2 = 1is met.If on the one hand FXS should be interrupted, and on the other hand, "Travle to fixed stop",the following settings are required:MD37002 $MA_FIXED_STOP_CONTROL, Bit 0 = 0andMD1012 $MD_FUNC_SWITCH, Bit 2 = 0.Programming FXS in synchronized actionsThe function is not available for analog axes (PLC acknowledgment cannot be awaited).Select FXS[ ]=1:The following signal interfaces are set:Message to PLC:NST DB31, ... DBX62.4 ("Activate travel to fixed stop").The FXS selection command can only be used in systems with digital drives (VSA, HSA,HLA).Following condition must be observed:MD37060 $MA_FIXED_STOP_ACKN_MASK, Bit 0 = 0Bit 0 = 1 (waiting for PLC acknowledgement) must not be set, otherwise, an interpolatorstop would be required to acknowledge the signal, interrupting the movement.Deselect FXS[ ]=0:The following signal interfaces are reset:Message to PLC: