3-4 Agilent 4155C/4156C SCPI Command Reference, Edition 1
Status Reporting Structure
Status Byte Register
Table 3-1 Status Byte Register
Bit Definition Explanation
0 Emergency Status Bit
Summary Message
Indicates whether one or more of the enabled
Emergency Status Register bits is set.
1 Measurement/Stress
Status Bit Summary
Message
Indicates whether one or more of the enabled
Measurement/Stress Status Register bits is
set.
2 NOT USED Always zero.
3 Questionable Status Bit
Summary Message
Indicates whether one or more of the enabled
Questionable Status Register bits is set.
4 Message Available
(MAV) Queue Summary
Message
Indicates whether the Output Queue is
empty.
5 Standard Event Status
Bit (ESB) Summary
Message
Indicates whether one or more of the enabled
Standard Events Status Register bits is set.
6 Request Service (RQS)
Message
Indicates whether a SRQ (Service Request)
has occurred.
Master Summary Status
(MSS) Summary
Message
Indicates that the instrument has at least one
reason for requesting service.
7 Operation Status Bit
Summary Message
Indicates whether one or more of the enabled
Operation Status Register bits is set.