Siemens SINUMERIK Series Function Manual

Also see for SINUMERIK 828D Turning: Diagnostic manual Function manual Equipment manual Programming manual Operating manual

N4: Own channel - only 840D sl9.2 Stroke controlExtended FunctionsFunction Manual, 03/2013, 6FC5397-1BP40-3BA1 5619.2.5 PLC signals specific to punching and nibblingFunctionIn addition to the signals used for direct stroke control, channel-specific PLC interfacesignals are also available. These are used both to control the punching process and todisplay operational states.SignalsSignal ActivationDB21, ... DBX3.0 (no stroke enable) Prevents the NC from initiating a punching operation.The NC waits until the enable signal is availablebefore continuing the part program.DB21, ... DBX3.2 (stroke suppression) Allows the part program to be processed withoutinitiating a punching operation (dry run).With active path segmentation, the axes traverse in"Stop and go" mode.DB21, ... DBX3.4 (delayed stroke) Activates delayed stroke output if permitted byPDELAYON.DB21, ... DBX3.1 (manual strokesuppression)Enables the operator to initiate a punching operation(controlled via the PLC) without executing the partprogram.Manual stroke initiation is acknowledged with signal:DB21, .. DBX38.1 (acknowledgement of manualstroke initiation)9.2.6 Punching and nibbling-specific reactions to standard PLC signalsDB21, ... DBX12.3 (feed stop)With interface signal:DB21, ... DBX12.3 (feed stop), the NC reacts in the following way with respect to the stroke control:Signal is detected in advance of instant t 1 : Stroke initiation is suppressed.The next stroke is not initiated until the next start oruntil the "Feed stop" signal has been canceled.Machining is then continued as if there had been nointerruption.Signal is detected at instant t 1 : The current stroke is executed to completion.The NC then dwells in the state characterized by t4 .To allow it to respond in this manner, time monitoringof the "Stroke active" and "Stroke initiation" signals isdispensed with.