Figure 1-2. status reporting structure, Status reporting structure -5 – KEPCO KLP Series Developer's Guide, Rev 1 User Manual

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FIGURE 1-2. STATUS REPORTING STRUCTURE

When the service request is executed, the STB register bits are read: bit 3 set indicates Ques-
tionable Status; bit 2 set indicates the error/event queue is not empty; bit 4 set indicates that a
message is available in the output buffer. bit 5 set indicates event status; bit 7 set indicates
operation status. The host computer program might then issue a query to read one of the indi-
cated register set.