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13 Anhang: Einführung in die Modbus Befehle
Function Code
Decimal
Hexadecimal
3
16
Register table
Folgende Spalten gibt es:
Register
Register
Alias
Address
Register Alias
Register Address
Action
Size
Type
Units
Range
Description
Unit Table
Folgende Datentypen gibt es in der Modbus Liste:
Type
Description
UInt16
16-bit unsigned
integer
Int16
16-bit signed
integer
UInt32
32-bit unsigned
integer
UInt64
64 bit unsigned
S110
Function Name
03H
Read Holding Registers Read present HEX from
10H
Write Multiple Registers Write present HEX on
Action
R/WC
The meaning of the register
Modbus address of register encoded in the
Modbus frame, in decimal (dec)
The read/write by command register
The data size in Int16
The encoding data type
The unit of the register value
The permitted values for this variable, usually a
subset of what the format allows
Provides information about the register and the
values that apply
Size
Type
Range
0 ... 65535
-32768 ... +32767
0 ... 4, 294, 967, 295
0 ... 18, 446, 744, 073, 709, 551, 615
Behavior
one or more registers.
multiple registers.
Units
Description
21
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