Z-TWS4 is an advanced control unit with 4 integrated I/Os, 1GB flash memory, 64GB RAM, 1 CAN port, 4 serial ports, 2 USB ports, Dual Ethernet ports and a Micro SD card slot for up to 32 GB. Designed for plant automation (Straton - Soft PLC IEC 61131-3) and Energy Management applications (IEC 60870-5-101, IEC 60870-5-104 and IEC 61850 supported protocols), Z-TWS4 is also a Linux-based CPU designed for data acquisition and control applications. Moreover with Straton IDE, Z-TWS4 can act as an IEC 61850 Server, as a ModBUS RTU-ModBUS TCP conversion system, as VPN client via internet and A point-to-point tunnel manager.