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A.1.4
Measured variables without a time stamp with the function codes 0x03 and
0x04
Addressing the measured variables without a time stamp
The PAC4220 Power Monitoring Device provides measured variables with or without a time
stamp.
Note
Error in the case of inconsistent access to measured values
Please ensure the start offset of the register is correct when making read accesses.
Please ensure the start offset and the number of registers are correct when making write
accesses.
If a value consists of 2 registers, a read command applied in the second register, for example, will
generate an error code. The PAC4220 will also output an error code if, for example, a write
operation ends in the middle of a multi-register value.
###Information Markus Braun/Thomas Reisinger: Table not yet final. Final table
(Datadictionary) will be supplied at a later time###
Table A-2
Measured variables available without a time stamp
Offset
Number
Name
of regis‐
ters
1
2
Voltage L1‑N
3
2
Voltage L2‑N
5
2
Voltage L3‑N
7
2
Voltage L1‑L2
9
2
Voltage L2‑L3
11
2
Voltage L3‑L1
13
2
Current L1
15
2
Current L2
17
2
Current L3
19
2
Apparent power L1
21
2
Apparent power L2
23
2
Apparent power L3
25
2
Active power L1
27
2
Active power L2
29
2
Active power L3
37
2
Power factor L1
39
2
Power factor L2
41
2
Power factor L3
43
2
THD voltage L1‑L2
45
2
THD voltage L2‑L3
PAC4220
Equipment Manual, L1V30827278B-01
Format
Unit
Float
V
Float
V
Float
V
Float
V
Float
V
Float
V
Float
A
Float
A
Float
A
Float
VA
Float
VA
Float
VA
Float
W
Float
W
Float
W
Float
-
Float
‑
Float
‑
Float
%
Float
%
Appendix
A.1 Modbus
Value range
Access
‑
R
‑
R
‑
R
‑
R
‑
R
‑
R
‑
R
‑
R
‑
R
‑
R
‑
R
‑
R
‑
R
‑
R
‑
R
0 ... 1
R
0 ... 1
R
0 ... 1
R
0 ... 100
R
0 ... 100
R
115
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