If you use a machine with an infinite wrist that you want to use in infinite wrist mode (such as a CW43L), set DEAWrist = 1 in the Option section of the PCDLRN.INI file. You must also set RotateWristFromController = False as described in "Interface-Specific Options".
If you use a machine with an infinite wrist that you want to use like an indexable wrist (such as an IW42C), set DEAWrist = 0 in the Option section of the PCDLRN.INI file. You must also set RotateWristFromController = True as described in "Interface-Specific Options".