Function BlockMC_CamStartPosPLCopen motion icon

Description

This function block returns the slave axis position for the specified profile, based on the current position of the master axis. This slave axis position can be used to command the slave axis to move to the proper location prior to commanding a MC_CamIn move with StartMode = 0 (Start mode).

The typical application of MC_CamStartPos is to aid in positioning a slave axis to its starting position for a MC_CamIn move with a slave absolute profile. See Positioning an Axis Before Starting Camming for complete instructions.

Figure 7-142: MC_CamStartPos

Arguments

Inputs

Enable Description Enables execution of the function block
  Data Type BOOL
  Range n/a
  Units n/a
  Default
Master Description Master axis
  Data Type AXIS_REF
  Range [1,256] for .AXIS_NUM
  Units n/a
  Default
Slave Description Slave axis
  Data Type AXIS_REF
  Range [1,256] for .AXIS_NUM
  Units n/a
  Default
MasterOffset Description Master axis offset
  Data Type LREAL
  Range
  Units User Units
  Default
SlaveOffset Description Slave axis offset
  Data Type LREAL
  Range
  Units User Units
  Default
MasterScaling Description Master axis scale factor. Scaling must be a positive value that is greater than 0.
  Data Type LREAL
  Range
  Units User Units
  Default
SlaveScaling Description Slave axis scale factor. Scaling must be a positive value that is greater than 0.
  Data Type LREAL
  Range
  Units User Units
  Default
CamTableID Description Profile ID number. This number was generated by MC_CamTblSelect.
  Data Type INT
  Range [0,255]
  Units n/a
  Default

Outputs

Done Description TRUE = the function block has successfully calculated the slave position. The slave position is available at the SlavePos output.
  Data Type BOOL
  Units n/a
Error Description TRUE = an invalid input was specified or an error occurred in the calculations. The value at the SlavePos output is undefined.
  Data Type BOOL
  Units n/a
ErrorID Description Indicates the error if Error output is set to TRUE. See table in PLCopen Function Block ErrorID Output
  Data Type INT
  Units n/a
SlavePos Description If the Done output is TRUE, this output returns the position for the slave axis given the profile and the current master axis position.
  Data Type LREAL
  Units User Units

Examples

ST

Inst_MC_CamStartPos( TRUE, Axis1, Axis2, MasterOffset, SlaveOffset, MasterScale, SlaveScale, Profile1CamTableID);

IL

CAL Inst_MC_CamStartPos( TRUE, Axis1, Axis2, MasterOffset, SlaveOffset, MasterScale, SlaveScale, Profile1CamTable ID)

FBD

FFLD

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