Parker EME
Motion control
192-121102 N04 June 2008 161
5.1.13. Library constants
The following global constants are declared in the PLCopen function module
library:
Name Table Style Description
For power supply of the axis inputs/outputs of modules:
Axis_Ref_LocalAxis INT Local axis
for Compax3F: Main axis
Axis_Ref_LocalAxisAux INT Only for Compax3F: Local auxiliary axis
Axis_Ref_Virtual INT virtual Master (only with T40)
AXIS_REF_LocalCam INT Local Cam axis (physically present axis)
For the selection of the master signal source:
AXIS_REF_Physical INT
for +/-10V analog input, step / direction input
5V or Encoder A/B input 5V (depending on the
configuration of the physical source under
signal source)
Axis_Ref_Virtual INT virtual Master
Axis_Ref_HEDA INT HEDA
Axis_Ref_Additional INT reserved (additional sources)
Axis_Ref_CAN INT reserved (CAN)
General constants
MC_Direction_Positive INT
For supply of the Direction input of the
MC_MoveVelocity module (for positive
rotational direction)
MC_Direction_Negative INT
For supply of the Direction input of the
MC_MoveVelocity module (for negative
rotational direction)
MC_Direction_Current INT
For supply of the Direction input of the
MC_MoveVelocity module (retaining the last
rotational direction to be selected)
Direction_Memory INT (Variable)
The MC_MoveVelocity modules instances
store the last direction parameter in this
variable. This variable can only be used by
Motion Control modules and must not be
overwritten!
OutputSelect_C3Output INT
for the C3_OutputSelect module:
Assignment of the source for the respective
output to module "C3_Output".
OutputSelect_FastCam INT
for the C3_OutputSelect module:
Assignment of the source for the respective
output to the respective fast cam.
Reset positioning mode
All directions INT C3_all_direction
Positive direction INT MC_positive_direction
Shortest path INT MC_shortest_way
Negative direction INT MC_negative_direction
Actual direction INT MC_current_direction
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