Page History

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• Signal state change to 50 (Fast close init)
• Load fast close speeds
• If neither at position P1 (positive closed) nor at position P2 (negative closed), then
  • Move (MA) to the positive closed position (P1)
  • If error checking is enabled (Ec=1), check drift at previous, assumed negative closed position (call X8)
  • Hold until movement complete
  • Set Df=1 to indicate that slits are in positive closed position
  • Copy current encoder count to Cs for future drift checks
• EndIf
• Signal state change to 51 (Fast close complete)
• Goto mode select

Mode 7: Home to Index Mark

• Signal state change to 70 (Homing init)
• Load homing/alignment speeds
• Execute home-to-index (HI) with option 3 (slew at VM in + direction, creep in - direction)
• Hold until movement complete
• Relative move (MR) by 
• TODO in progress

Subroutines

Drift Check at Positive Closed Position (X8)

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