Modbus TCP/IP Client (Universal and Advanced Models)

Presentation

The Panel Server acts as both a Modbus TCP/IP gateway and a Modbus device by using the internal Modbus TCP server.

To correctly configure your Modbus TCP/IP client to access data from Panel Server and from devices under Panel Server, see Modbus Gateway Function.

The Panel Server acts as a Modbus gateway for wired or wireless Ethernet communications from an upstream PC to Ethernet devices and field devices on the downstream network. By using a local monitoring software you can access information from devices for data collection and other functions.

The Panel Server manages Modbus communication on all interfaces including Wi-Fi.

For more information, see Modbus TCP/IP functions and Modbus TCP/IP exception codes in appendix.

Availability

This function is available on Panel Server Universal and Advanced.

Setting the Parameters

NOTICE
IMPAIRED NETWORK PERFORMANCE Only qualified personnel should modify the Modbus TCP/IP settings. Perform such modifications only after you have read about and understood the Modbus TCP/IP settings. Failure to follow these instructions can result in loss of network connectivity.

Modbus TCP/IP client function is set as follows:

With EcoStruxure Power Commission software
On the Panel Server webpages, at Settings > Modbus devices > Network configuration > Modbus TCP/IP client.

For information about the Modbus registers, see the guide of each Modbus-SL device and DOCA0241EN EcoStruxure Panel Server - Modbus File for wireless devices.

Modbus TCP/IP Client Settings

The following table describes the settings available from the webpages.

Parameter	Description
Connection timeout (ms)	Used to set the time the Panel Server waits for a remote Modbus TCP/IP device to establish the connection with the Panel Server. Values from 100 to 10000 ms in a list (default setting: 2000 ms)
Message timeout (is)	Used to set the time the Panel Server waits for a remote Modbus TCP/IP device to respond and send a message following a Modbus TCP/IP request initiated by the Panel Server. Values from 1000 to 20000 ms with step 1000 (default setting: 3000 ms)

Parameter

Description

Connection timeout (ms)

Used to set the time the Panel Server waits for a remote Modbus TCP/IP device to establish the connection with the Panel Server.

Values from 100 to 10000 ms in a list (default setting: 2000 ms)

Message timeout (is)

Used to set the time the Panel Server waits for a remote Modbus TCP/IP device to respond and send a message following a Modbus TCP/IP request initiated by the Panel Server.

Values from 1000 to 20000 ms with step 1000 (default setting: 3000 ms)

For recommendations and more information about setting the message timeout parameter, refer to Setting Message Timeout for Modbus Client and Server.