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PT UNIT USER MANUAL
APRIL 2023 www.eaton.com.cn
Appendix A - Modbus Communication Port Setting
Each data object occupies two registers (four bytes) in length, except for certain energy objects. These energy objects occupy
four registers. Since these objects have the capability to change in real time, a complete data object must be obtained in a
single transaction to avoid data tearing. Attempting to access a partial data object will result in an exception code 84. (See
Section A.3.11)
Table A3. Real Time Data
Register Number.
Register Addresses (HEX)
Objects
FP Data
Factor
IEEE Float Fixed Point (FP) IEEE Float Fixed Point (FP) Descriptions
Units
404609
406145
1200
1800
Status cause:
404609 and 406415 high byte is primary status, shown in Table A14.
404609 and 406415 low byte is secondary status, shown in Table A15.
404610 and 406416 are cause-of-status, shown in Table A16.
404611
406147
1202
1802
IA
A
10
404613
406149
1204
1804
IB
A
10
404615
406151
1206
1806
IC
A
10
404617
406153
1208
1808
IG
A
10
404619
406155
120A
180A
IN
A
10
404623
406159
120E
180E
VAB
V
10
404625
406161
1210
1810
VBC
V
10
404627
406163
1212
1812
VCA
V
10
404631
406167
1216
1816
VAN
V
10
404633
406169
1218
1818
VBN
V
10
404635
406171
121A
181A
VCN
V
10
404651
406187
122A
182A
Real 3 phase power
W
1
404653
406189
122C
182C
Reactive 3 phase power
VAR
1
404655
406191
122E
182E
Apparent 3 phase power
VA
1
404659
406195
1232
1832
Power factor
100
404661
406197
1234
1834
Frequency
Hz
10
404697
406233
1258
1858
Real power peak demand
W
1
404719
406255
126E
186E
Product ID
404721
406257
1270
1870
Frequency
Hz
100
406259
1872
Forward energy
KWh
1
406261
1874
Reverse energy
KWh
1
406263
1876
Total energy
KWh
1
406271
187E
Apparent energy
kVAh
1
404765
406301
129C
189C
Temperature
°C
1
406305
18A0
Forward energy
Wh
1
406309
18A4
Reverse energy
Wh
1
406313
18A8
Total energy
Wh
1
406329
18B8
Apparent energy
Vah
1
404797
406333
12BC
18BC
Reactive power peak demand
VAR
1
404799
406335
12BE
18BE
Apparent power peak demand
VA
1
404835
406371
12E2
18E2
Phase A current demand
A
1
404837
406373
12E4
18E4
Phase B current demand
A
1
404839
406375
12E6
18E6
Phase C current demand
A
1
404843
406379
12EA
18EA
Phase N current demand
A
1
404845
406381
12EC
18EC
Real power demand
W
1