Rainbow Electronics 71M6542G - Manual (Page 133)

v1.1 © 2008–2011 Teridian Semiconductor Corporation 133
CE
Address
Name Default Description
0x21 WRATE 547
pulse Wh
X N WRATE
K IMAX VMAX
Kh
ACC
/
⋅
⋅ ⋅
⋅ ⋅
=
where:
K = 66.1782 (Local Sensors)
K = 109.1587 (Remote Sensor)
N
ACC
= SUM_SAMPS[12:0] (CE RAM 0x23)
See Table 83 for the definition of X.
The default value yields 1.0 Wh/pulse for VMAX = 600 V and
IMAX = 208 A. The maximum value for WRATE is 32,768 (2
15
).
0x22 KVAR 6444 Scale factor for VAR measurement.
0x23 SUM_SAMPS 2520 SUM_SAMPS (N
ACC
).
0x45 APULSEW 0
Wh pulse (WPULSE) generator input to be updated by the MPU
when using external pulse generation. The output pulse rate is:
APULSEW * F
S
* 2 -32 * WRATE * X * 2 -14 .
This input is buffered and can be updated by the MPU during a
conversion interval. The change takes effect at the beginning of
the next interval.
0x46 WPULSE_CTR 0 WPULSE counter.
0x47 WPULSE_FRAC 0
Unsigned numerator, containing a fraction of a pulse. The value
in this register always counts up towards the next pulse.
0x48 WSUM_ACCUM 0 Roll-over accumulator for WPULSE.
0x49 APULSER 0 VARh (VPULSE) pulse generator input.
0x4A VPULSE_CTR 0 VPULSE counter.
0x4B VPULSE_FRAC 0
Unsigned numerator, containing a fraction of a pulse. The value
in this register always counts up towards the next pulse.
0x4C VSUM_ACCUM 0 Roll-over accumulator for VPULSE.