Parker EME
Motion control
192-121102 N04 June 2008 269
Explanation:
The repeated turning up of the single start during the run through curve must not
disturb 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 is
only 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; the
axis 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 the
value 2.
The axis is coupled after Homing (MC_CamIn), then the curve generator
(C3_CamTableSelect) starts, after that the master position acquisition is started
via the external input (C3_MasterControl).
As the output Home.Done is permanently present, this output must be put to CI1
with 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 times
Task:
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 Function
I0 Energize axis, Homing
I1 Enable and start of the master position detection
I2 Start of the curve cycle
I3 Free
I4 Free
I5 Free
I6 Free
I7 Start of the virtual master
Corresponding files:
Control interface:
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