Modbus Measured Variables With The Function Codes 0X03 And 0X04 - Siemens SENTRON PAC3200T Product Manual

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 PAC3200T 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
R
W
RW
Offset Number of Name
registers
1 2 Voltage V
3 2 Voltage V
5 2 Voltage V
7 2 Voltage V
9 2 Voltage V
11 2 Voltage V
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
31 2 Reactive power L1
33 2 Reactive power L2
PAC3200T
Equipment Manual, 02/2020, L1V30415168B-02
L1-N
L2-N
L3-N
L1-L2
L2-L3
L3-L1
Abbreviation
Read; read access
Write; write access
Read Write; read and write access
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 var
Float var
Appendix
A.1 Modbus TCP
Value range Access
— R
— R
— R
— R
— R
— R
— R
— R
— R
— R
— R
— R
— R
— R
— R
— R
— R
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