The GE IS215VCMIH2BB and IS200VCMIH2BCC are components of the Speedtronic Mark VI Turbine Control system, designed by General Electric (GE) for managing steam and gas turbines. These boards play crucial roles in the system's communication and control functions.

• IS215VCMIH2B: This board functions as a VME Bus Master Controller, facilitating communication between the controller and the Input/Output (I/O) boards within the system. It manages IDs for boards within the rack and associated terminal boards. The board features four port connections on its front faceplate, including one serial port and three IONet connectors, each with its LED indicators for TX, RX, and CD. It also has LED indicators for Run/Fail/Status and four additional LEDs labeled 1,2,4, and 8. The IS215VCMIH2B is a 6U high VME board with a Texas Instruments 32-bit digital signal processor and 32-bit transfer configuration SRAM, 256k x 32. It includes two backplanes, a single 12-pin vertical male connector, and several conductive dots. The board is designed to interface communications between the controller and the I/O boards, ensuring reliable management of turbines.

• IS200VCMIH2BCC: The IS200VCMIH2BCC is a GE Mark VI printed circuit board designed to mount in slot one of the Central Control Module. It serves as an internal communications control card, enabling I/O cards within the rack or within other Control or Protection Modules to communicate with each other. The board has a narrow front faceplate with a 9-pin serial port, three DIN connectors (IONet1, IONet2, and IONet3), a reset switch, and twenty LED indicators. It also features multiple connector components, two backplanes, two vertical pin connectors, and several conductive trace connectors. The board includes over fifty integrated circuits, including FPGA (field programmable gate arrays), and has over twenty-five inductor beads located in several lines on the board surface.

  
  

  

Both boards are integral to the Speedtronic Mark VI system, designed to meet or exceed many safety and quality assurance standards, including ISO-9000-3 Quality Management and Quality Assurance Standards, Pt 3: Guidelines for the Application of ISO-9001 to Development Supply & Maintenance of Software. They ensure the efficient management and control of turbines in various applications, from nuclear power plants to industrial processes.