Siemens SENTRON PAC2200, Product Manual, Page: 101 / 130

Appendix
A.1 Modbus TCP
PAC2200
Equipment Manual, 12/2019, L1V30415167B-03
99
A.1.3 Modbus measured variables with the function codes 0x03 and 0x04
Addressing the measured variables
You can use the Modbus function codes 0x03 and 0x04 on all the measured variables listed
below.
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.
Example: If a value consists of two registers, a read command applied in the second register
will generate an error code. The PAC2200 will also output an error code if a write operation
ends in the middle of a multi-register value.
Table A- 3 Available measured variables
Abbr. in the "Access" column Abbreviation
R
Read access
W Write access
RW Read and write access
Offset Number of
registers
Name Format Unit Value range Ac-
cess
1 2 Voltage V
L1-N
Float V - R
3 2 Voltage V
L2-N
Float V - R
5 2 Voltage V
L3-N
Float V - R
7 2 Voltage V
L1-L2
Float V - R
9 2 Voltage V
L2-L3
Float V - R
11 2 Voltage V
L3-L1
Float V - R
13 2 Current L1 Float A - R
15 2 Current L2 Float A - R
17 2 Current L3 Float A - R
19 2 Apparent power L1 Float VA - R
21 2 Apparent power L2 Float VA - R
23 2 Apparent power L3 Float VA - R
25 2 Active power L1 Float W - R
27 2 Active power L2 Float W - R
29 2 Active power L3 Float W - R
31 2 Reactive power L1 Float var - R