Opto 22's groov version 2.1 is an update to its groov Web-based mobile operator interface system for building and using effective, scalable operator interfaces on smartphones, tablets and other mobile devices. groov 2.1 improvements include faster tag handling with OPC-UA servers, and improved data exchange with mobile devices for faster response times and lower mobile network costs. groov lets industrial automation end-users, system integrators, machine OEMs, technicians, or any authorized person quickly and securely monitor and control PLCs and PACs like Allen-Bradley ControlLogix and CompactLogix, Siemens SIMATIC S7, Schneider Electric Modicon, GE PACSystems, and other controllers, all from a mobile device.