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2857-570/024-001
Functions
Product manual | Version: 2.0.0
47
3-Phase Power Measurement Module, 1 A
Register 0x0000 – Status word 1
1
Threshold value underrun
Bit 9: Threshold value Overvoltage L3
0
Threshold value not reached
1
Threshold value reached or exceeded
Bit 10: Threshold value Overcurrent L3
0
Threshold value not reached
1
Threshold value reached or exceeded
Bit 11: Tamper Detect
0
Fault Current
iSUM Lx (t) − iN (t)
≤ Tamper Detect Threshold value
1
Fault Current
iSUM Lx (t) − iN (t)
> Tamper Detect Threshold value
Bit 12: Rotating Field Indicator
0
Rotating field correct L1–L2–L3 (clockwise)
1
Rotating field incorrect (counterclockwise)
Bit 13: S0 Interface Overclocking Status
0
OK
1
S0 interface is overclocked.
Bit 14, 15: Reserved
4.7.4 Measured Value Register
The higher-level controller has access to a number of measured value registers via Mod-
bus. The measured values for the energies are in the data type INTEGER; all others are
FLOAT. All registers have a size of four bytes (1 DWord). The byte sequence is as fol-
lows:
Table 70: Measured Value Register
Word 1 (high)
Word 2 (low)
Byte 1 (high)
Byte 2 (low)
Byte 3 (high)
Byte 4 (low)
M
S
B
L
S
B
M
S
B
L
S
B
M
S
B
L
S
B
M
S
B
L
S
B
In the table below, all measured variables are listed with the corresponding register ad-
dresses and update intervals.
Note
The Measured Values are Dependent on the Network Topology!
All measured values are measured only in a 4-wire three-phase networks. In other net-
works, some values are not measured. See table below!
Table 71: Measured Value Register
Register Address
Measured Variable
Measure-
ment Unit 1
A, 5 A / Ro-
gowski
Register Ac-
cess
Update Rate
[ms]
0x0000
Status
none
R
40
0x0002
RMS Current L1
A
R
40
0x0004
RMS Current L2
A
R
40
0x0006
RMS Current L3
A
R
40