If you buy the servo motor from OMRON and connect it to position control unit, you can reduce the wiring time as they can provide the ready made cable. I think it should not be a problem for you to use other brand of servo motors as position control unit can support all pulse-trained types servo motors.
NC-113,NC-213 etc are the model of position control modules attached to PLC. If you want to use Analog Control on servo motor, you would need MC series Motion Control module.