User's Manual

Industrial VPN Security Gateway
IVR-100_IVR-300 Series
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4.4.14 Modbus
The IVR-300/IVR-300W provides a feature that can convert the Serial RS485 communication to IP networking.
Ethernet signal allows two types of segments to connect easily, efficiently and inexpensively. The solution
helps users and SIs save expenses as there is no need to replace the existing serial equipment and software
system.
This page provides Modbus Configuration setting as shown below.
Figure: Modbus Configuration
Object Description
• Modbus TCP
Indicates the Modbus TCP mode operation. Possible modes are:
Enabled: Enable Modbus TCP mode operation.
Disabled: Disable Modbus TCP mode operation.
• Serial device
Set up the Modbus Serial device to RS-485
• Baudrate
Select the Modbus Baudrate to 300 ~ 115200
• Databits
Set up the Modbus Databits to 8