Engine control that does not give serial commands in the documentation

I use a motor connected to a serial port (RS-232). I need to use it as part of an automation setup in a lab. The motor was part of a larger installation that you can buy, and this is the only part of the setup I use. In the configuration, a fragment of the GUI software used for analysis appeared; I can use this application to move the engine manually. There is no sequential commands in the documentation and the only software method for controlling the device mentioned in the documentation makes you call QT and seems more complicated than necessary, given the only function I need is to move this step. Does anyone know how to find serial commands or hack settings to complete this simple task? It seems to me that if it is connected through the serial port, they should have internal serial commands used for control when writing the source software.

Details: The engine is part of this tuning from Thorlabs. The beam shaper that comes with this setting is not used in favor of the nicer one that is mounted on the motor stage. In fact, it is a stepper motor that moves in one dimension. If that matters, I will probably use C # in this project (because another device forces me to use .net)