Siemens SITRANS F Modbus RTU RS 485 - Modbus Holding Registers; Process Data

Modbus holding registers
A
In the following the holding registers for the USM II Modbus RTU module are described.
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Figure A-1 Modbus Holding Registers Memory Map
• The minimum value of a writable "holding register" value can be read by adding 10000 to the
address of the value.
• The maximum value of a writable "holding register" value can be read by adding 20000 to the
address of the value.
If the value is not directly applicable, the min./max. limit shown will be based on the data type
- e.g. a "WORD-type" value will show the limits 0-65535 - even though some of these values are
not allowed.
Note
Min./max. values do not apply to all datatypes (e.g. strings). Reading min./max. value for such
"holding registers" will return zero-values.
A.1 Process data
Table A-1 Process data, MAG 6000
MODBUS regis‐
ter
MODBUS ad‐
dress
No. of bytes Data type Description Read / write
4:03003 3002 4 Float Absolute Volume󹪞ow (customer unit
1)
) R
4:03015 3014 8 Double Totalizer 1 (customer unit
2)
) R
4:03019 3018 8 Double Totalizer 2/Batch (customer unit
3)
) R
Modbus RTU RS 485
Operating Instructions, 03/2021, A5E00753974-AB 37