The GE IS21SVCMIH2CB is a communication interface card designed for use within the GE Mark VI Turbine Control System. As part of the VME Bus Master Controller (VCMI) series, this board plays a crucial role in the communication between various components, including I/O cards, expansion racks, backup protection modules, and the main controller.

Communication Ports: The IS21SVCMIH2CB comes with four communication ports located on the front faceplate. These include three IONet Ethernet ports (10Base2) and one RS-232C serial port. These ports are designed for robust industrial communication.

LED Indicators: The card has multiple LED indicators that provide real-time status feedback. These include labels such as Run, Fail, and Status, and additional indicators for communication traffic like TX/RX and CD.

The IS21SVCMIH2CB integrates seamlessly with the VME bus, enabling smooth communication between various control and I/O systems in turbine control applications.

 IS21SVCMIH2CB It includes internal monitoring of the system's power supplies (+5 V, ±12 V, 15 V) to ensure safe and reliable operation.

 IS21SVCMIH2CB System Version: 3 Network Version for TMR (Triple Modular Redundant) systems.

Product Type: VME Communication Card (VCMI Bus Master Controller).

Memory: Includes SRAM and Flash memory for efficient data handling and communication tasks.

The  IS21SVCMIH2CB card follows the standard 6U VME size.

This board is critical for managing communications within complex turbine systems and ensuring reliability in environments where data transfer speed and system redundancy are paramount. 

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