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Operation
Accumulated Status, Status, and Fault Registers
Accumulated Status, Status, and Fault Registers
The GPIB option card uses three separate registers which are always active. They
are the accumulated status, status, and fault registers. You can use the status
commands shown in Table 3.8, "Status Commands" to activate the registers. The
bit register has twelve conditions, each assigned a bit weight. When querying a
register, the controller returns a response which is the sum of the weights of all
relevant conditions.
Example:
Table 3.10 Accumulated Status, Status, and Fault Registers
Condition
Constant voltage operation
Constant current operation
Not used
Overvoltage protection tripped
Over temperature protection tripped
Supply external shutdown active (J7-1)
Foldback mode operation
Remote programming error
Power ON (accumulated status, status
registers only)
Remote mode (accumulated status, status
registers only)
AC fail condition
Output fail condition
Sense protection tripped
Notes:
1.
2.
3.
4.
46
ASTS?
ASTS <771>
771 = 512 + 256 + 2 + 1 = PON + REM + CC + CV
All mnemonics can be masked or unmasked.
The error (ERR) bit is reset in the accumulated status, status, and serial poll registers with an
error query (ERR?).
The accumulated status register is cleared with an accumulated status query (ASTS?).
A fault is cleared with a fault query (FAULT?).
Query the Accumulated Status register.
Controller response.
Mnemonic Bit Position Bit Weight
CV
CC
–
OV
OT
SD
FOLD
ERR
PON
REM
ACF
OPF
SNSP
Operating Manual for GPIB for XHR/XFR Series Power Supply
0
1
1
2
2
4
3
8
4
16
5
32
6
64
7
128
8
256
9
512
10
1024
11
2048
12
4096
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