The I10T10 does have gearing functionality. This is accomplished by using the master T10’s encoder simulation. The master and slave T10 must have their X11 connectors connected to one another. One way to connect them is to use the Compax3’s encoder coupling cable (X11 to X11).
The interface to the master I10T10 needs to be considered when setting up the system. That is because if one wants to use +/-10V from a PLC (pin 9 and 11 on X11), then both the PLC and the secondary I10T10 both need to go into X11 of the master; meaning that the encoder coupling cable will have to be modified.