We implemented pneumatic transport of fly ash and bottom ash installation. The control system is based on two redundant controllers Siemens S7 400H. As I/O modules we used - ET 200M connected to the controller via Profibus. The driver defined about 1000 I/O. Partly, control and preview process has been transferred to the DCS system via Modbus network. Local visualization has been implemented on two Siemens operator panels connected to the Siemens controller.