Visualisations 8 Visualisations 8.1 V_SPA_OVERVIEW The TwinCAT Solar Position Algorithm library contains a visualisation facility that provides a quick overview of current inputs and outputs of function block FB_SPA [ } 13] . It is therefore ideal for test purposes. Fig. 1: SPA_Visu To use the visualisation function a new visualisation must be created in the project. V_SPA_OVERVIEW is added via the Visualisation button. TS3900 20 Version: 1.1