ELL14 Motorized SM1 Optic Rotator Chapter 4: Operation
Rev. B, Feb 2020 Page 7
Controlling the Rotator
The rotator can be controlled in three ways; via the handset, by the Elliptec software running on a PC, or by writing a custom
application using the messages described in the communications protocol document. Homing and Jogging functionality can also
be accessed by applying voltages to the digital lines on Connector J1. The modes of control are described in the following
sections.
Caution
In all modes, the angular position is requested and displayed from 0 to 359.99°. If a rotator is driven past the 359.99°
rotation point, the display reverts back to zero and counts up to 359.99° again. Furthermore, the unit will not respond
to requests for a move to a position greater than 359.99° and an error message will be generated.
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