5 Implementation of Modbus TCP
5.2 Implemented Modbus functions
XI/ON: XNE-GWBR-2ETH-MB
10/2011 MN05002008Z-EN
www.eaton.com
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5.2
Implemented Modbus functions
The XI/ON gateway for Modbus TCP supports the following functions for accessing process
data, parameters, diagnostics and other services.
Table 9:
Implemented
functions
Function Codes
No. Function
Description
1
Read Coils
Serves for reading multiple output bits.
2
Read Discrete Inputs
Serves for reading multiple input bits
3
Read Holding Registers
Serves for reading multiple output registers
4
Read Input Registers
Serves for reading multiple input registers
5
Write Single Coil
Serves for writing single output bits
6
Write Single Register
Serves for writing single output registers
15
Write Multiple Coils
Serves for writing multiple output bits
16
Write Multiple Registers
Serves for writing multiple output registers
23
Read/Write Multiple Registers
Serves for reading and writing multiple registers
