How a plc can control in the same time 3 different X-axis?

Hello everyboyd,

I am supposed to make a concept for a machine, which has 9 axis ( 9 motors ). Every axis or every motor will be placed  in a dfferent place, so in the end i will have like 2 Y-axis , 3 X-axis and only one Axis, that rotates. 

My idea is to control those axis with a plc and cnc-program. but i can't imagine how a plc can control in the same time 3 different X-axis. 

Do you have any idea please ? 

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Split from 840D control of Axis through PLC.