Maxim Integrated 6613_PSU_1+1S_URT_v1_00 - Manual (Page 28)

6613_PSU_1+1S_URT_V1_00 Firmware Description Document UG_6613_040
28 Rev. 1.0
MPU
Parameter
Location
(hex)
LSB Default Comment Example
Unused DA - DB –
PFA_ Neg
Threshold
DC – -0.700
Power Factor Negative Threshold.
A less negative power factor than
this threshold will set an alarm (bit
11 of the Alarm Status Register).
Only available if )F2 bit 2 is set to
1.
If the negative power factor
threshold is to be changed
from the default to -0.6 then
set as follows:
)DC=-0.600
PFA_ Pos
Threshold
DD – +0.700
Power Factor Positive Threshold.
A positive power factor less than
this threshold will set an alarm (bit
12 of the Alarm Status Register).
If the positive power factor
threshold is to be changed
from the default to +0.6
then set as follows:
)DD=+0.600
Unused DE - DF – – Unused
Unused E0 - E5 – – Unused
Alarm
Mask_Reg
E6 – 00201FFF
Alarm mask for bits in the Alarm
Status register. A “0” masks the
alarm from the register bit.
If bits 0 and 1 are to be
masked then set as follows:
>)E6=00801FFC
Alarm
Mask_DIO
E7 – 00201FFF
Alarm mask for an alarm pin
(DIO20). A “0” masks the alarm
from DIO20
Alarm mask for an alarm
pin (DIO20). A “0” masks
the alarm from DIO20
AC Cycle
Count for CAL
EF 1 30 Number of AC cycles to average
during calibration
Reserved F0 – 0 Reserved Reserved
Min/Max
Control
F1 – 0
BIT1 – 1 Start/Stop MIN/MAX
recording.
1 = Start
0 = Stop
BIT0 – 1 Reset MIN/MAX
registers before recording. Bit
autoclears.
Reset & Start MIN/MAX
recording.
)F1=3
Stop MIN/MAX recording
)AC=00
Clear Control
and Power
Factor Polarity
F2 – 0
Clear Control and Power Factor
Polarity Register:
Bit 2 – Power Factor Polarity
0 = Power Factor is
positive only. Negative alarm
thresholds and alarms are not
enabled.
1 = Power factor can be
positive or negative.
Bit1 – Clears Counts
Bit 0 – Clears Accumulators.