Control Algorithm

The software used for the PLC programming was the Siemens Simatic Step 7 [13], with the Simatic S7 Prodave V5.5 [14] needed for the communication between the Scada system and the PLC network.

The designed control algorithm was implemented using the Ladder Diagram language [15].

The developed control algorithm is illustrated in fig. 8.

A short description of the tasks performed by the tracker controller, regarding the above referred algorithm, is described beside the algorithm.