Modbus TCP/IP Server
PresentationModbus TCP/IP devices connected downstream the Panel Server can be accessed from an upstream SCADA system.
This function is available on Panel Server Entry, Universal, and Advanced.
Setting the Parameters
Modbus TCP/IP server function is set as follows:
With EcoStruxure Power Commission (EPC) software
On the EcoStruxure Panel Server webpages, at .
Modbus TCP Server Settings
The following table describes the settings and where they are available.
Message timeout (s)
In Modbus network configuration, you can set the message timeout period for the Modbus TCP server.
Setting used to set the time-to-live of a Modbus request in the Panel Server. Any messages older than this setting will be dropped.
Values from 1,000 to 320,000 ms (default setting: 6,000 ms)
The value that you set for the Modbus TCP server must meet both following conditions:
In the Panel Server, the following settings are recommended for the message timeout: the value of message timeout for Modbus TCP server should be double the value of message timeout for Modbus client.
Message timeout for Modbus TCP server is called Upstream timeout and message timeout for Modbus client is called Downstream timeout as shown in the diagram.