LOK Status Condition
LOK indicates whether the board is in a lockout state. While LOK is set, the EnableLocal or ibloc call is inoperative for that board. LOK is set when the GPIB interface detects that the Local Lockout (LLO) message has been sent either by the GPIB interface or by another Controller. LOK is cleared when the System Controller unasserts the Remote Enable (REN) GPIB line.
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