Multi-axis servo control system

A multi-axis servo control system comprising:

• a plurality of motors, and
• a plurality of drive control apparatuses connected to each other through an external field bus, with each drive control apparatus comprising:
• a control unit, and
• a plurality of drive units connected to the control unit in series, wherein the control unit is connected in series to a first drive unit of the plurality of drive units through a first local bus of a plurality of local buses, and other drive units are connected in series through other local buses other than the first local bus to form a series-connected communication loop of sequentially transmitting data;
• each drive unit configured to control at least one of the plurality of motors,
• wherein the control units are connected to each other through the external field bus, and configured to directly receive multi-axis position commands through the external field bus, and
• wherein each control unit is configured to provide the multi-axis position commands to the drive units in the drive control apparatus same as the control unit or to the drive units in the drive control apparatus different from the control unit, and therefore the drive units are configured to correspondingly receive multi-axis commands through the local buses so as to control the plurality of motors in a decentralization manner.