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Status Reporting System
Status Register Structure
Table C-1
Status Bit Definitions of Status Byte (STB)
Issuing the
358
Bit
Name
Position
0 to 3
Not used
4
MAV (Message Available)
5
Standard Event Status Register
Summary
6
RQS (Request Status) bit for
SPOLL
MSS (Master Summary Status)
bit for
*STB?
7
Operation Status Register
Summary
*CLS
command will clear all bits from the status byte register.
Description
Always 0
Set to "1" when the output queue contains data; reset to
"0" when all of the data has been retrieved.
Set to "1" when one of the enabled bits in the status event
status register is set to "1."
Set to "1" when any of the status byte register bits enabled
by the service request enable register is set to "1"; reset to
"0" when all of the data has been retrieved through serial
polling.
Set to "1" when one of the enabled bits in the operational
status register is set to "1."
Appendix C
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