Microprocessors shall have non-volatile memory 24 hours battery backup for memory is an acceptable alternate and be able to perform their control functions without access to the console or communicati

Blind operation refers to the ability of the microprocessor to perform its control functions without the need for visual monitoring or input from the console or communication bus. In other words, the microprocessor can continue to operate the plant even if there is a failure in the console or communication system, without the need for human intervention or monitoring.