Well, "carousel" really should be able to run this changer.
However you will need a little bit of extra HAL logic for the FWD / REV outputs. use an "or2" HAL component to turn on motor control pin 2 if carousel fwd OR rev is true, and connect pin 1 directly to carousel fwd.
Sample carousel HAL code is here:
github.com/LinuxCNC/linuxcnc/blob/master...toolchange_index.hal
Though that is rather more complex than you probably need if you have no interlocks etc.