ECET-262 [LABORATORY 12C]

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P a g e | 8 of 25 The figure below explains how a logical encoder works as a conduit between the Slave Axis/ CAM Axis. X Velocity Logical Encoder Slave Axis X position being virtual the X velocity ( velocity at which X position would be incremented) could be provided to the logical encoder in two different ways: Setting the Offset Velocity of the Logical Encoder Or, Setting logical encoder to follow a real axis by using SetMasterEncoder function block. As said earlier a CAM motion profile is described by a MultiCamStruct type of variable. The table below explains the different MultiCamStruct structure variables: Structure Variable Definition NumberOfCamPoints Number of CAM points in the structure UserTableId Number to identify Table at run time mStart Slope at the beginning mEnd Slope at the end XPeriode X Period YPeriode Y Period
P a g e | 9 of 25 Example : MultiCamStruct structure variable declaration: multicamstuc_FWD.NumberOfCamPoints:=3; Defines the total number of CAM points to be 3. multicamstuc_FWD.CamPoint[0].X:=0; multicamstuc_FWD.CamPoint[0].Y:=0; multicamstuc_FWD.CamPoint[0].M:=0; multicamstuc_FWD.CamPoint[0].CamType:=poly5com; Defines the CAM point 0 which in motion terms define that When X is at 0 Y (Slave ) is at 0(takes no turn). multicamstuc_FWD.CamPoint[1].X:=180; multicamstuc_FWD.CamPoint[1].Y:=3600; multicamstuc_FWD.CamPoint[1].M:=0; Defines the CAM point 1 which in motion terms define that When X is at 180 Y (Slave ) is at 3600(takes 10 turns). multicamstuc_FWD.CamPoint[1].CamType:=poly5com; multicamstuc_FWD.CamPoint[2].X:=360; multicamstuc_FWD.CamPoint[2].Y:=0; multicamstuc_FWD.CamPoint[2].M:=0; Defines the CAM point 2 which in motion terms define that When X is at 360 then Y (Slave ) is at 0(no turn). multicamstuc_FWD.CamPoint[2].CamType:=poly5com;
Page 1 and 2: ECET-262 FALL 2010 [LABORATORY 12C]
Page 3 and 4: P a g e | 3 of 25 PacDrive Automati
Page 5 and 6: P a g e | 5 of 25 Toolkit EPAS-4 is
Page 7: P a g e | 7 of 25 Creating a CAM pr
Page 11 and 12: P a g e | 11 of 25 2. Configure Log
Page 13 and 14: P a g e | 13 of 25 6. Define CAM_Up
Page 15 and 16: P a g e | 15 of 25 (profiles) that
Page 17 and 18: P a g e | 17 of 25 InstantNewCam
Page 19 and 20: P a g e | 19 of 25 Sample CAM Motio
Page 21 and 22: P a g e | 21 of 25
Page 23: P a g e | 23 of 25 CAM Motion Progr

ECET-262 [LABORATORY 12C]

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