Product Description XI/ON - Eaton Automation

XI/ON: Gateways for Modbus TCP 3 Ethernet
Modbus TCP
In Ethernet TCP/IP networks, Modbus TCP uses the Transport
Control Protocol (TCP) for the transmission of the Modbus application
protocol.
All parameters and data are embedded in the user data of the TCPtelegram
using the encapsulation protocol: the client generates a
special header (MBAP = Modbus Application Header), which
enables the server to clearly interpret the received Modbus-parameters
and -commands.
The Modbus protocol is thus part of the TCP/IP-protocol.
Note
Chapter 5 contains a more detailed description of Modbus TCP.
3.1.5 Checking the communication via "ping-signals"
You can check the communication between nodes in a network
using ping-signals in the DOS-prompt of your PC.
For that purpose, please enter the command "ping" and the IP
address of the network node to be checked.
If the node answers the ping-signal, it is ready for communication
and takes part in the data transfer.
Figure 15:
ping-signal
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