Keysight N432A Programming Manual page 134

2 IEEE-488 Command Reference
*STB?
The *STB? query reads the condition register of the Status Byte register and
returns a decimal value which corresponds to the binary-weighted sum of all bits
set in the register. The return format is <NR1> in the range of 0 to 255. This query
is similar to a Serial Poll but it is processed like any other instrument command.
This is a read-only register and the bits are not cleared when you read the register.
This query returns the same results as a Serial Poll but the "Master Status
NOTE
Summary" (MSS) bit (bit 6) is not cleared if a Serial Poll has occurred.
The following table lists the bit definitions of the Status Byte register:
Table 2-4
Bit
0
1
2
3
4
5
6
7
Refer to
Syntax
Example
*STB?
134
Bit definitions: Status Byte register
Weight/Decimal value
1
2
4
8
16
32
64
128
"Status Byte summary register"
?
*STB
Returns the bits currently set in the condition register.
Definition
Not used
Device Status register summary
Error/Event queue
QUEStionable Status summary
Message available
Event Status Byte summary
Master Status summary (Request for service)
OPERation Status summary
on page 105 for more details.
Keysight N432A Programming Guide