IEEE-488 Common Commands
IEEE-488 Common Commands
This subsystem contains commands and queries associated with the IEEE-488 standards:
- Clear status
- Event status enable
- Event status register query
- Instrument identification
- Set operation complete bit
- Wait for current operation to complete
- Show installed options
- Power-on status clear
- Recall/save instrument state
- Reset instrument to
- Service request enable (enable bits in enable register of Status Byte Register group
- Read status byte
- Trigger command
- Self-test
- Wait for all pending operations to complete
Registers
Some of the IEEE-488 commands are associated with various registers in the instrument. These registers are
described below.
Standard Event Register
The following table describes the Standard Event Register.
Bit
Number
Bit Name
Decimal
Value
Definition
0
Operation
Complete
1
All commands before and including
have been executed.
1
(not used)
2
(Reserved for future use)
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, calibration error or other
device-specific error occurred. See
.
Agilent 33500 Series Operating and Service Guide
229
