Designed for B7A Link terminals, the Omron C200H-B7A22 interface unit provides 32 output points and either 32 input points or 30 input points with 2 error inputs. It operates using a one-way distributed multiplex transmission system, supporting communication distances of up to 500 meters in standard mode and 100 meters in high-speed mode. The unit achieves transmission delays of 19.2 milliseconds in standard operation and 3 milliseconds in high-speed operation, with minimum input times of 16 milliseconds and 2.4 milliseconds respectively. Power requirements include a maximum internal current consumption of 100 mA at 5 VDC and an external power supply of 12 to 24 VDC ±10% with a minimum current of 0.08 A.