You have function blocks inside your program:
MC_Power for enabling power to all axes, MC_GroupEnable for enabling power of the kinematic, MC_MoveLinearAbsolute for moving the kinematic but for the PLC open statemachine (see documentation) there is one step missing. That is MC_AddAxisToGroup to add the axes to the kinematic after enabling them and before enabling the kinematic.
Blending should also work. See online documentation or docu inside of the library for more information.
I tested your code (extended with addtokin) with real axes and they seemed to run smoothly. So probably this is only an read value topic. The plan is to analyse the problem next week. We will let you know.
With the CXA_MOTION or CXA_MOTION_INTERFACE I have never seen this problem before.
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