GE Mark VI IS200VCRCH1BBB Discrete Input/Output BoardDescription The IS200VCRCH1BBB is a Discrete Input Output Terminal Processor Board used in the Mark VI General Electric turbine control system. This board is functionally similar to the VCCC model, with the main difference being that the VCRC is a single slot version, unlike the dual slot VCCC which includes a daughterboard. This design allows the VCRC to occupy less space when mounted in the Mark VI cabinet. Technical Specifications Instruction