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107 ADAM-5560 Series User Manual
Chapter 4 Modbus Functions
4.4 Modbus/TCP Server Functions
ADAM-5560 Series Controller supports Modbus/TCP server function for connecting
to HMI/SCADA software. The Modbus/TCP server function is supported by using
Ethernet port of ADAM-5560 Series Controller.
4.4.1 Modbus Address Mapping
ADAM-5560 Series Controller reserves 16K Bytes memory space for Modbus function.
The memory block can store user’s data and exchange it through Modbus protocol.
The unit in Modbus 4X registers is Word so there are totally 8K Words available.
The Modbus address is defined from 42001 to 49999. In order to exchange the data
through Modbus, users need to move the data onto this memory block by setting the
memory address in “I/O Address” field manually. The memory address of this memory
block is defined from mw3.0 to mw3.15996. The mapping table of I/O Address and
Modbus Address is as following table.
Since unit of mw3.0 is Byte, users need to map the I/O Address and Modbus Address
as following.
For Bool data type:
For Byte and Word data type:
For Dword and Real data type:
I/O Address Modbus Address
%mw3.0 42001
%mw3.2 42002
%mw3.4 42003
...
I/O Address Modbus Address Length
Data 1 mw3.0.0 02001 1 Bit
Data 2 mw3.0.1 02002 1 Bit
Data 3 mw3.0.2 02003 1 Bit
I/O Address Modbus Address Length
Data 1 mw3.0+ mw3.1 42001 2 Bytes
Data 2 mw3.2+mw3.3 42002 2 Bytes
Data 3 mw3.4+mw3.5 42003 2 Bytes
I/O Address Modbus Address Length
Data 1 mw3.0+mw3.1+mw3.2+mw3.3 42001+42002 4 Bytes
Data 2 mw3.4+mw3.5+mw3.6+mw3.7 42003+42004 4 Bytes
Data 3 mw3.8+mw3.9+mw3.10+mw3.11 42005+42006 4 Bytes