Maxim Integrated 6613_OMU_2+2S_URT_V100 - Manual (Page 20)

6613_OMU_2+2S_URT_V1_00 Firmware Description Document UG_6613_060
20 Rev. 1.1
5 MPU Measurement Outputs
This section describes the measurement outputs that can be obtained in Manual CLI Mode. Energy
outputs are accumulated numbers. The host accessing the measurement information from the 78M6613
more frequently than the accumulation interval will not result in any update in the information.
Table 2 lists the wideband measurement outputs for outlet1 and table 3 for outlet 2.
Table 2: Outlet 1 MPU Outputs
Output
Location
(hex)
LSB Comment Example
Delta
Temperature
20 0.1 °C Temperature difference from 22° C.
If external temperature is 32 °C
)20?
Returns:
+10.0
Line
Frequency
21 0.01 Hz Line Frequency
If the line frequency is 60 Hz:
)21?
Returns:
+60.00
Alarm Status 22
Definition for Status Register
Bit 0: Minimum Temperature Alarm.
Bit 1: Maximum Temperature Alarm.
Bit 2: Minimum Frequency Alarm.
Bit 3: Maximum Frequency Alarm.
Bit 4: SAG Voltage Alarm.
Bit 5: MINVA
– under minimum
voltage on VA input.
Bit 6: MAXVA
– over maximum
voltage on VA input.
Bit 7: Reserved.
Bit 8: MAXIA WB
– maximum WB
current exceeded on outlet 1.
Bit 9: Reserved.
Bit 10: Reserved.
Bit 11: PFA negative WB - Power
Factor Negative Threshold Alarm.
Only available if )F2 bit 2 is 1.
Bit 12: PFA positive WB
– Power
Factor Positive Threshold Alarm for
outlet 1.
Bit 13: Reserved.
Bit 14: MAXIB_WB
– maximum
wideband current exceeded on
Outlet 2.
Bit 15: Reserved.
Bit 16: Reserved.
Bit 17: PFB_WB negative
–
Wideband Power Factor Negative
Threshold Alarm for Outlet 2. Only
available if )F2 bit 2 is 1.
Bit 18: PFB_WB positive
–
Wideband Power Factor Positive
Threshold Alarm for Outlet 2.
Bit 19: MAXIT_WB
– maximum total
wideband current exceeded on both
Outlet 1 and Outlet 2.
Alarms become “1” when
thresholds exceeded.
Note: Additional Status Alert is
Located at addr 0xBD (see Table 4 )
Note: When AC voltage input is less
than or equal to 10 V
RMS
,
•
Only MINVA alarm is active.
•
All measurements are forced
to 0 except power factor,
which is forced to 1.
Note: The frequency measurement
is forced to 0 as long as the SAG
voltage alarm is active.