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. - Starts the motion engine, motion bus driver, clears the EtherCAT ***EtherCAT is an open, high-performance Ethernet-based fieldbus system. The development goal of EtherCAT was to apply Ethernet to automation applications which require short data update times (also called cycle times) with low communication jitter (for synchronization purposes) and low hardware costs diagnostic registers of all nodes, and initializes EtherCAT network to operational mode.
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Outputs
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Remarks
- Applicable to PLCopen A vendor -and product- independent worldwide association active in Industrial Control and aiming at standardizing PLC file formats based on XML and Pipe Network motion engines.
- MLMotionStart does not clear any pre-existing error conditions.
- Returns TRUE if the function succeeded.
- Returns FALSE if the motion engine is in the Error state.
FBD Language Example
FFLD Language Example
IL Language Example
Not available.
ST Language Example
//Initialization code to start EtherCAT network.
//First initialize network with MLMotionInit command
//Then wait for command to finish by monitoring MLMotionStatus output
//Once initialized, create any cam profiles and PLCopen or Pipenetwork devices
//Then call MLMotionStart and monitor MLMotionStatus again before beginning rest of program
FirstCycle := TRUE;
On FirstCycle DO //Initialize the motion engine
MLMotionInit( 1000);
END_DO;
MotionEngineStatus := MLMotionStatus();//Check the current status of the motion engine
//Once motion engine is initialized, create CAM profiles and defined Axis, then start the motion engine
ON MotionEngineStatus = MLSTATUS_INITIALISED DO
Profiles( MLPR_CREATE_PROFILES );
PLCopen( 0 );
MLMotionStart();
END_DO;
IF MotionEngineStatus = MLSTATUS_RUNNING THEN
bMotionEngineStarted := TRUE;
ELSE
bMotionEngineStarted := FALSE;
END_IF;
See Also
