E
NGINEERING
D
EPARTMENT
706679 Rev 09-26-18
7 of 9
STATUS_WORD 0x79
Byte
Bit
Number
Status Bit
Name
Description
Low
7
BUSY
Not supported.
6
OFF
Output off has occurred.
5
VOUT_OV
Output overvoltage fault has occurred.
4
IOUT_OC
Output overcurrent fault has occurred.
3
VIN_UV
Not supported.
2
TEMPERATURE
Transformer temperature fault has occurred.
1
CML
PMBus communications fault.
0
NONE OF THE
ABOVE
Not supported.
High
7
VOUT
Output voltage fault or warning has
occurred.
6
IOUT/POUT
Output current fault or warning has
occurred.
5
INPUT
Not supported.
4
MFR
Not supported.
3
POWER_GOOD
The POWER_GOOD negation has occurred.
2
FANS
Not supported.
1
OTHER
Not supported.
0
UNKNOWN
Not supported.
Table 8 Status Byte/Word Description
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.
Parameter Value
m
8525d
b
0
R
-3d
Table 9 PMBus direct format coefficient parameters for READ_VOUT
