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Modbus – T2 Address mapping Example:
Modbus Address T2 Address T2 Data Type
30000 XW000 Input Register
40001 YW001 Output Register
44352 D0000 Data Register
Note: When dealing with I/O registers, make sure that the Modbus master is attempting to
access only the I/O points that physically exist in the T2 system. For example, Holding
Register 0 (40000) does not exist in the above example because there is no YW000 in the T2
system. In the above system, only have Holding Register 1 (40001) exists.
5.3. Restricted Registers
Registers D1406 to D1535 are reserved for “raw” data transmission with the EC300 loop
controllers on the ECBUS network. These registers are not available when the EX10-MML11
is used as a Modbus slave module. Do not use these registers.
T2E CPU Modbus Module
Input module
(XW000)
Output Module
(YW001)
In this example, the T2 is being used
As a Modbus Remote Terminal Unit
slave. A Modbus master can access
The I/O or data registers in the T2.
See the following table for a Modbus to
T2 address mapping example.