By Mary Del
July 3, 2014 – System integrators and OEMs often develop applications that require PLC control, but that settle on simple text displays due to limited budget. But Unitronics has specifically developed the Samba all-in-one, palm-sized controller for these situations. The HMI 3.5-inch QVGA 16-bit touchscreen enables data entry and display of variable data, including colour trend graphs and alarm screens. Samba supports 24 user-designed screens, and up to 40 images per application. The integrated PLC controller features two auto-tuned PID loops, time-based RTC control, data logging, recipes and more. Internal memory holds 0.5 MB of application logic, plus 512K for fonts and 0.5 MB for images. Onboard I/Os offer digital, analog and high-speed functionality. Samba offers a built-in RS232 port, but users can add an additional RS485 serial, Ethernet or CANbus port. It supports GPRS/GSM, email, SMS, as well as industrial TCP/IP protocols, MODBUS, DF1 slave, CANopen, J1939 and more.