The WP-51xx series is equipped a PXA270 CPU and running a windows CE.NET 5.0 operating system. Compared to NjPAC-5000, it has a VGA port to support graphic display and no need HMI. Instead of internal wireless module, the user should use external wireless device through Ethernet or RS-232 for wireless communication. Using Windows CE.NET 5.0, it is capable of running PC-based software, such as Visual Basic.NET, Visual C#, Embedded Visual C++, SCADA software, ISaGRAF …etc.