Agilent Technologies HP 16500B Manual page 115

Common Commands
*STB (Status Byte)
Table 8-5 HP 16500B Service Request Enable Register
Bit Position
15-8
7
6
5
4
3
2
1
0
*STB (Status Byte)
Query
*STB?
The *STB query returns the current value of the instrument's status byte.
The MSS (Master Summary Status) bit, and, not the RQS (Request Service)
bit is reported on bit 6. The MSS indicates whether or not the device has at
least one reason for requesting service. Refer to table 8-6 for the meaning of
the bits in the status byte.
Returned Format
<value><NL>
An integer from 0 through 255
<value>
Example
OUTPUT XXX;"*STB?"
See Also
Refer to Chapter 6, "Status Reporting" for a complete discussion of status.
8–16
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Bit Weight Enables
not used
128 not used
64 MSS - Master Summary Status (always 0)
32 ESB - Event Status
16 MAV - Message Available
8 LCL- Local
4 not used
2 not used
1 MSB - Module Summary