5.2 Synchronization marks and axis movement directions5.2.1 Synchronization marks and synchronization position for axesIntroductionThis section shows the position of the synchronization marks and thesynchronization position for each axis.Synchronization marks, IRB 6620LXxx0900000223Synchronization mark, axis 1 (optional location) iASynchronization mark, axis 2BSynchronization mark, axis 3CSynchronization mark, axis 4DSynchronization mark, axis 5ESynchronization mark, axis 6Fi The location of the synchronization mark for axis 1 is optional and can be placed at a suitableposition for the installation.Product manual - IRB 6620LX 3033HAC035737-001 Revision: P© Copyright 2009-2018 ABB. All rights reserved.5 Calibration5.2.1 Synchronization marks and synchronization position for axes