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Modbus Connection Guide

W55RP20-S2E Modbus Connection Overview​

The W55RP20-S2E supports protocol conversion between Modbus TCP server/UDP and Modbus RTU/ASCII.

Required Hardware and Software​

Hardware​

  • W55RP20-S2E
  • Cables (Ethernet / Serial)

Software​

  • WIZnet S2E Configuration Tool

Note : Modbus protocol requires the latest version of WIZnet-S2E-Tool-GUI version 1.5.5 or higher.

How to Connect to Modbus​

Step 1: Run Config-tool​

Run installed 'Config-tool'

Step 2: Setup Modbus Poll & Slave​

Setup Modbus Poll & Slave Program.

  • Modbus Poll connects via Modbus TCP/IP or Modbus UDP/IP depending on the settings.
  • Modbus Slave connects via the Serial Port.
Figure: Setup Modbus Poll & Slave Program

Step 3: Setup W55RP20-S2E through WIZnet S2E Configuration Tool for Modbus Connection​

  1. Select TCP Server or UDP mode in the Operation mode setting section
Figure: Select TCP Server or UDP mode
  1. Setup Modbus Option
Figure: Setup Setup Modbus Option
  1. Click the Apply Settings button to save the settings
Figure: Click Apply Settings button
Figure: Saved settings

Step 4: Done​

W55RP20-S2E is successfully connected to the Modbus!

Figure: connected to the Modbus