71M6521 Demo Board User’s Manual
Revision 2.18
© 2005-2009 TERIDIAN Semiconductor Corporation
Page: 45 of 111
0x75
0x11D4
VAR0SUM_X
--
The sum of VAR samples from each wattmeter element (
In_8
is
the gain configured by
IA_SHUNT
or
IB_SHUNT
).
0x71
0x11C4
VAR1SUM_X
0x76
0x11D8
W0SUM_X
--
The sum of Watt samples from each wattmeter element (
In_8
is
the gain configured by
IA_SHUNT
or
IB_SHUNT
).
0x72
0x11C8
W1SUM_X
0x7A
0x11E8
CESTATUS
See description of CE status above.
0x7C
0x11F0
MAINEDGE_
X
--
The number of zero crossings of the selected voltage in the pre-
vious accumulation interval. Zero crossings are either direction
and are debounced.
0x7B
0x11EC
TEMP_RAW_
X
--
Filtered, unscaled reading from the temperature sensor.
Table 1-16: CE Memory Locations (71M6521FE, 71M6521DE)
1.10.6 CE CODE MEMORY LOCATIONS (71M6521BE)
All CE memory locations are listed in the 71M6521BE data sheet. These locations are listed again in Table
1-17, along with the physical addresses used by the hex records interface.
Physical
Address
Name
Default
Description
0x1020
CAL_IA
16384
These constants control the gain of their respective channels. The
nominal value for each parameters is 2
14
= 16384. The gain of each
channel is directly proportional to its CAL parameter. Thus, if the gain of
a channel is 1% slow, CAL should be scaled by 1/(1 – 0.01).
0x1024
CAL_VA
16384
0x1028
CAL_IB
16384
0x102C
CAL_VB
16384
0x1030
PHADJ_A
0
This constant controls the CT phase compensation. No compensation
occurs when
PHADJ_A
= 0. As
PHADJ_A
is increased, more
compensation (lag) is introduced. Range:
±
2
15
– 1.
0x1034
PHADJ_B
0
This constant controls the CT phase compensation. No compensation
occurs when
PHADJ_B
= 0. As
PHADJ_B
is increased, more
compensation (lag) is introduced. Range:
±
2
15
– 1.
0x1038
--
--
Unused
0x103C
--
--
Unused
0x1040
CESTATE
0x5020
See description of
CESTATE
in the table below
0x1044
WRATE
389
Kh =
VMAX
*
IMAX
*47.1132
/
(
WRATE
*360*N
ACC
) Wh/pulse. The default
value results in a Kh of 1.0Wh/pulse when 2520 samples are taken in
each accumulation interval (and VMAX=600, IMAX = 208, In_8 = 1).
0x1048
GAIN_ADJ
16384
GAIN_ADJ
is controlled by the temperature compensation mechanism,
and scales all voltage and current inputs. 16384 provides unity gain.
0x104C
QUANTA
0
This parameter is added to the Watt calculation for element 0 to
compensate for input noise and truncation.
LSB = (
VMAX
*
IMAX
) *7.4162*10
-10
W
0x1050
SAG_THR
443000
The threshold for sag warnings. The default value is equivalent to 80V
RMS if VMAX = 600V. The LSB value is 80V/443000.