MLCamInit

 Function A function calculates a result according to the current value of its inputs. A function has no internal data and is not linked to declared instances. - Initializes a CAM Pipe Block for use in a PLC "Programmable Logic Controller" A Programmable Logic Controller, PLC, or Programmable Controller is a digital computer used for automation of industrial processes, such as control of machinery on factory assembly lines. Used to synchronize the flow of inputs from (physical) sensors and events with the flow of outputs to actuators and events Program.

Inputs

Input	Data Type	Range	Unit	Default	Description
BlockID	DINT	-2147483648 to 2147483647	N/A	CAM	ID number of a created Pipe Block.
ProfileName	STRING	No range	N/A	No default	Name of the current profile assigned to the CAM. It must be a declared profile object.
ModuloPosition	LREAL	No range	User units	360.0	Value of the period of the cam output values expressed in user units, for a cyclic system.

Outputs

Output	Data Type	Range	Unit	Description
Default (.Q)	BOOL			Returns TRUE if the CAM Pipe Block is initialized. See Pipe Network - General Rules for more information.

Remarks

This function block is automatically called if a CAM Block is added to the Pipe Network, with user-defined settings then entered in the Pipe Blocks Properties screen.

• The CAM Pipe Block is used to generate motion profiles of any shape.
  • These profiles are created and initiated separately and the shape is modified with the CAM Editor.
  • With the Editor profiles can be changed graphically or by manually changing values in a numeric table relating input and output values with specific slopes.
  • The CAM Editor software tool provides the capability to visualize, analyze, edit, and smooth profiles.

With the Pipe Network (PN) CAM block:

• The CAM block’s profile is in reference to the input positions coming into the PN CAM block (Master Absolute)
• The PN CAM block output positions are in reference to PN CAM block’s output position at the end of the last CAM cycle (Slave Relative).
• Profile switching can be done on the fly, without losing synchronization and without dead time.
  • In addition, the offsets and ratios of CAM Profiles can be changed on the fly.
  • See CAM Profile Switching for more information.

• 
  

• CAM objects are normally created in the Pipe Network using the graphical engine.
  You do not have to add MLCamInit function blocks to their programs.
  Parameters are entered directly in pop-up windows and the code is automatically added to the current project.

FBD Language Example

FFLD Language Example

IL Language Example

Not available.

ST Language Example

//Initialize  a Pipe Network block named “CAM” with a profile named “Profile_A”, set the cam modulo position to 360
CAM := MLBlkCreate( 'CAM', 'CAM' );
MLCamInit( CAM, 'Profile_A', 360.0 );

See Also

• MLProfileCreate
• MLProfileInit