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 120The illustrations show the synchronization marks on IRB 120.xx0900000574Calibration mark axis 1ACalibration mark axis 2BCalibration mark axis 3CContinues on next page228 Product manual - IRB 1203HAC035728-001 Revision: N© Copyright 2009-2017 ABB. All rights reserved.5 Calibration5.2.1 Synchronization marks and synchronization position for axes