Standard Event Register
The following table describes the Standard Event Register.
Bit Num-
ber
Bit Name
Decimal
Value
Definition
0
Operation
Complete
1
All commands prior to and including
have been executed.
1
Not Used
2
0 is returned.
2
Query
Error
4
The instrument tried to read the output buffer but it was empty. Or, a new command line was received
before a previous query has been read. Or, both the input and output buffers are full.
3
Device-
Specific
Error
8
A device-specific error, including a self-test error or calibration error, occurred (an error in the -300
range or any positive error has been generated). See
for the complete SCPI
error message list.
4
Execution
Error
16
An execution error occurred (an error in the -200 range has been generated).
5
Command
Error
32
A command syntax error occurred (an error in the -100 range has been generated).
6
Not Used
64
0 is returned.
7
Power On
128
Power has been cycled since the last time the event register was read or cleared.
Status Byte Register
The following table describes the Status Byte Register.
Bit Num-
ber
Bit Name
Decimal
Value
Definition
0
Not Used
1
(Reserved for future use)
1
Not Used
2
(Reserved for future use)
2
Error Queue
4
One or more errors have been stored in the Error Queue. Use
to read
and delete errors.
3
Questionable Data
Summary
8
One or more bits are set in the Questionable Data Register (bits must be enabled, see
).
4
Message Available
16
Data is available in the instrument's output buffer.
5
Standard Event
Summary
32
One or more bits are set in the Standard Event Register (bits must be enabled, see
).
6
Master Summary
64
One or more bits are set in the Status Byte Register and may generate a Request for Service
(RQS). Bits must be enabled using
.
7
Standard Operation
Summary
128
One or more bits are set in the Standard Operation Register (bits must be enabled, see
).
Keysight True
volt
Series Operating and Service Guide
265
SCPI Programming Reference
