Using a multi-meter on continuity range, unplug one of your motors then identify the A / #A windings and the B / #B windings then check that they connect to the correct pins on your controller.
Using the multi-meter on dc volts range, check the output of your 24 – 30 Volt PSU and also check that it is connected with the correct polarity to your controller / driver cards.
From reading your technical data, it is my understanding that your controller has internal pull-ups and will operate without the charge pump signal.
Therefore;
With your PC switched off and the parallel port cable disconnected from the PC if you switch on your controller the motors should lock.
Tweakie.