text: <user>
  Create a function block for motion control in TwinCAT Structured Text that implements a simple point-to-point movement for a single axis. Include error handling and status monitoring.<|endoftext|>
  <assistant>
  Here's a TwinCAT 3 Structured Text function block for basic point-to-point motion control:
  
  ```st
  FUNCTION_BLOCK FB_SimpleAxisControl
  VAR_INPUT
      bEnable     : BOOL;  // Enable axis
      bMoveAbs    : BOOL;  // Trigger absolute movement
      fPosition   : LREAL; // Target position
      fVelocity   : LREAL; // Movement velocity
  END_VAR
  
  VAR_OUTPUT
      bError      : BOOL;  // Error flag
      nErrorID    : UDINT; // Error ID
      bBusy       : BOOL;  // Axis is moving
      bDone       : BOOL;  // Movement complete
  END_VAR
  
  VAR
      axis        : AXIS_REF;
      fbPower     : MC_Power;
      fbMoveAbs   : MC_MoveAbsolute;
      fbReset     : MC_Reset;
  END_VAR
  
  // Main logic
  fbPower(
      Axis := axis,
      Enable := bEnable,
      Enable_Positive := bEnable,
      Enable_Negative := bEnable,
      Override := 100,
      Status => ,
      Error => bError,
      ErrorID => nErrorID
  );
  
  IF bEnable AND NOT bError THEN
      fbMoveAbs(
          Axis := axis,
          Execute := bMoveAbs,
          Position := fPosition,
          Velocity := fVelocity,
          Done => bDone,
          Busy => bBusy,
          Error => bError,
          ErrorID => nErrorID
      );
  END_IF
  
  // Error handling
  IF bError THEN
      fbReset(
          Axis := axis,
          Execute := TRUE
      );
      IF fbReset.Done THEN
          fbReset(Execute := FALSE);
          bError := FALSE;
          nErrorID := 0;
      END_IF
  END_IF
  ```
  
  This function block implements a simple point-to-point movement for a single axis using TwinCAT 3 motion control function blocks. It includes:
  
  1. Basic error handling with MC_Reset
  2. Status monitoring (busy, done, error)
  3. Absolute positioning with MC_MoveAbsolute
  4. Axis power control with MC_Power
  
  To enhance this implementation, consider exploring these TwinCAT 3 features:
  
  1. NC Task: Configure a separate NC task for motion control to ensure consistent execution.
  2. Axis Coupling: Use MC_GearIn for synchronized multi-axis movements.
  3. TwinCAT Scope View: Utilize this tool for motion tuning and diagnostics.<|endoftext|>
  