... user programmable DDC controller. 2.Full function for HVAC and BAS control. 3.Very easy ... .1 PDDC3026 is a Direct Digital Control for HVAC(Heating,Ventilating,and Air Conditioning) and BAS(Building ... Autocontrol System),Factory Power Monitor.1.2 Industry local bus for ... the local bus.1.5 Online emulator, for test your control logic, it is free ...