Parker EME Motion control192-121102 N04 June 2008 269Explanation: The repeated turning up of the single start during the run through curve must notdisturb the operation. Single start during positioning must not disturb, curve must not start:This is prevented by the fact that the enable of the master position detection isonly started, if the drive is in the "Synchronized Motion" state. If a positioning is executed, the axis is in the "discrete Motion" state. When MC-CamIn is executed, the axis will switch into the "Synchronized Motion" state; theaxis is now synchronous with the curve generator. Master detection is started with an external event (input I1).In order to do this the C3_MasterControl module: is assigned to following value:ADR(C3.DigitalInput_Value = object for the digital inputs).In order to select the 2nd bit from this value the input StartMask receives thevalue 2. The axis is coupled after Homing (MC_CamIn), then the curve generator(C3_CamTableSelect) starts, after that the master position acquisition is startedvia the external input (C3_MasterControl).As the output Home.Done is permanently present, this output must be put to CI1with an edge module. This ensures that CI1 (MC_CamIn) can be activated again. The absolute movement is not executed in the "Synchronized Motion " status(MC_MoveAbsolut reports an error), so this is automatically blocked.5.10.9.3 Example 3: Single Start for run through curve 5 timesTask: Open curve without standstill area Coupling / decoupling with change-over function Digital input for the start of 5 curve cycles (incl coupling and decoupling cycle)CamExample03.C3P (Compax3 project on the Compax3 CD:\Examples\Example3)CamExample03.pro (CoDeSys project on the Compax3 CD:\Examples\Example3)Input FunctionI0 Energize axis, HomingI1 Enable and start of the master position detectionI2 Start of the curve cycleI3 FreeI4 FreeI5 FreeI6 FreeI7 Start of the virtual masterCorresponding files:Control interface:
