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STATUS_WORD 0x79
Byte
Number
Low
High
READ_VOUT 0x8B
The A/D count is linear from zero to 120% of nominal output voltage resulting in a full scale count of 1023d
(this equates to 0.1173% per count). Nominal output voltage (100% of rated voltage) yields a reading of 852d.
Nominal voltages are model dependent but are rated at: 12V, 24V, 30V, 48V or 56V.
The coefficient parameters used to translate the data to the actual percentage value of rated output voltage
information are given below.
Table 9 PMBus direct format coefficient parameters for READ_VOUT
706679 Rev 09-26-18
Bit
Status Bit
Name
7
BUSY
6
OFF
5
VOUT_OV
4
IOUT_OC
3
VIN_UV
2
TEMPERATURE
1
CML
0
NONE OF THE
ABOVE
7
VOUT
6
IOUT/POUT
5
INPUT
4
MFR
3
POWER_GOOD
2
FANS
1
OTHER
0
UNKNOWN
Table 8 Status Byte/Word Description
Parameter
m
b
R
7 of 9
Description
Not supported.
Output off has occurred.
Output overvoltage fault has occurred.
Output overcurrent fault has occurred.
Not supported.
Transformer temperature fault has occurred.
PMBus communications fault.
Not supported.
Output voltage fault or warning has
occurred.
Output current fault or warning has
occurred.
Not supported.
Not supported.
The POWER_GOOD negation has occurred.
Not supported.
Not supported.
Not supported.
Value
8525d
0
-3d
E
D
NGINEERING
EPARTMENT
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