RT-11: DUSTAT Question

On RT-11 does DUSTAT care what kind of a disk controller you've got? I just spent a bunch of time fighting to get it onto my RT-11 system only to find out that once I got it assembled, it doesn't like something about the system. I suspect it's either the WEQSD ESDI Controller, or the ESDI drives I'm using. It gives the following error: ?DUSTAT-F-No translation for this unit! (?) Or am I confused and using the wrong syntax? .DUSTAT DU2: Zane | Zane H. Healy | UNIX Systems Adminstrator | | healyzh(a)aracnet.com (primary) | Linux Enthusiast | | healyzh(a)holonet.net (alternate) | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | and Zane's Computer Museum. | | http://www.dragonfire.net/~healyzh/ |