The communication between the human and robot in the social networked industry plays a crucial role. Autonomous robots navigate freely through the warehouses and therefore need to convey their intentions and tasks in an intuitive and understandable manner for its human counterpart. This study examines the icons on the e-Paper display of the ATV EMILI. Tasks of EMILI are the transportation of goods and collaborating with its user by adjusting its height for a safer ergonomic use. The robot communicates its status and intention via its display. The icons transfer task or error messages to its users. The icons have been evaluated in an iterative process consisting of three test phases. Based on the results of the different test phases and the technical restrictions new icons have not been developed until the requirements of the users have been matched. The error icons have been standardized and did not cause any ambiguity in their meaning, whereas the task icons had to be removed and new icons had to be developed.