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Status Registers
Overview
Release 2.1 77
CURRent
Sub-Register
This shows whether the present current level is over or under the specified trip limit.
Table 4.9 CURRent Sub-Register
Standard
Event Status
Register
The standard event status register sets bits for specific events during power supply
operation. All bits in the standard event status registers are set through the error event
queue. The register is defined by 488.2 and is controlled using 488.2 common
commands, *ESE, *ESE?, and *ESR?.
Figure 4.3 summarizes the standard Event Status Register
Figure 4.3 IEEE 488.2 Status Register and Status Byte
Bit Bit Weight Bit Name Description
0 1 Over CURrent Set if the supply’s output current is
greater than the user-specified
over-current trip level (variable trip limit)
and the supply is in Operation state.
1 2 Under CURrent Set if the supply’s output current is less
than the user-specified under current
trip level (variable trip limit) and the
supply is in Operation state.
Not Used
Not Used
Not Used
MAV
Standard Event Status Register
1
0
3
2
5
4
7
6
Summary of QUESTionable Status
RQS/MSS
Summary of OPERation Status
1
0
3
2
5
4
7
6
9
8
11
10
13
12
15
14
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
+
Operation Complete
Query Error
Device Dependent Error
User Request
Power On
Execution Error
Command Error
Not Used
Status Byte