Comment 12 for bug 1669889

Although this has nothing to do with Stellarium, a quick Google: "LX200 protocol" brought http://www.meade.com/support/LX200CommandSet.pdf which indicates that no such function exists in the protocol.

A similar search for "NexStar protocol" provided http://www.celestron.com/media/795779/1154108406_nexstarcommprot.pdf

which shows that this other available protocol includes such call.