Stand-By Redundant System with Open Modbus Facility is attached with PLC panel for process plants. Prima Automation [India] Pvt Ltd offers Stand-By Redundant System with Open Modbus Facility. Prima Automation [India] Pvt Ltd is an ISO 9001:2000 recognized company. Prima Automation [India] Pvt Ltd also offers various types of transformer test panel, and wind generators control panel, instrumentation panels, transformer winding machine, plant automation panels, hazardous area panels etc. Stand-By Redundant System with Open Modbus Facility is available with redundant PROFIBUS network to maximize the I/O availability.