Device for manually operating a motorized drive of a screen, such as a window covering, and method for saving setting values associated with different positions of the screen

A method for saving setting values associated with different positions of a window covering, wherein window covering is provided with a motorized drive and a device for manually operating the motorized drive of the window covering, said device comprising a housing to be attached to a shaft of the window covering;

• first operating means for manual operation of the device by means of pulling movements by a user;
• switching means for converting the pulling movements on the first operating means into first electrical signals for the motorized drive, wherein the switching means comprise a switch which does not generates first electrical signals in a first mode and generates first electrical signals in a second mode, wherein the switching means further comprise a switching element for connection to the first operating means, wherein the switching element is movable between a first position, in which the switch takes up the first mode, and a second position in which the switching element activates the switch in the second mode, and the device comprises control means for controlling the motorized drive on the basis of the first electrical signals,
• wherein the switch is electrically connected with the control means and wherein the control means comprise a first set of instructions for processing the first electrical signals, wherein the device is further provided with second manual operating means for generating second electrical signals, a data memory for saving setting values, wherein the control means is configured to save a setting value associated with a current position of the window covering in the data memory after receiving the first electrical signals, wherein the control means comprise a second set of additional instructions for processing the second electrical signals, wherein the control means are configured to save a setting value associated with a current position of the window covering in the data memory after receiving the second electrical signals,
• said method comprising the step of saving a current position of the window covering by manually operating the first operating means and said method comprising the further step of saving a current position of the window covering by manually operating the second operating means.