Web Client Access to Modbus TCP Server Data

A simple way to exchange Modbus TCP Server Registers and Coil data with your web applications



Price $805.00$976.25Price$805.00$976.25


Product Description

Easily Access Registers and Coils in Modbus
There are millions of Modbus measuring, metering and analyzing devices in industrial and building automation applications. Now, with the 460MCWI, you have an easy way to exchange Modbus TCP Server register and coil data with your web applications. Use that data to easily build an Excel log, a dashboard, archive data or create a sophisticated alarm system. The 460MCWI gets you the data – you just have to make use of it.

How Do I get Modbus Server Data?
First, you configure the 460MCWI using the easy to use, browser-based configuration pages. You’ll identify the address of the Modbus Servers to access and the registers and coils from each you want to read/write. Once that’s complete, you’ll map, name and group the data to be presented as XML or JSON files. Your application can than issue standard HTTP GET or POST instructions to move data into your application. It’s that easy.

How Is the Data Represented?
In your GET you can request either a JSON or XML data. In XML, you’ll get something like <Speed105>523<Speed105>. In JSON, you’ll get “Speed105:523” for the same register. Individual devices and groups can be identified to further organize your data.

What Web Client Applications Can I Use?
You can access the JSON or XML tags from any web application tool including Python, PSP and other similar tools.

Why Use Real Time Automation as a Gateway Supplier?
When you call, a live person answers the phone. When you talk with sales, you will get honest answers and recommendations. When you get support, it is from an engineer who had a hand in the product’s development, and support doesn’t require a ticket or 24-hour wait. Try the RTA difference today.

  • Manual
  • 3’ power cable with Flying leads
  • 5 Year Hardware Warranty
  • IPSetup software — Automatically locates RTA Gateway on the network
  • Unlimited Firmware Feature Upgrades for Life
  • CAT5 Cross over cable for direct connection to PC during programming
  • Complete, Unlimited Access to our Industry Leading Support Staff

Web Interface Features

Max Web Interface Connections 1 (Gateway acting as Client) / Unlimited (Gateway acting as Server)

Encodings JSON, XML

Proxy Support HTTP, SOCKS5 for Client

Maximum Number of Input Data Points 1000 JSON Fields or 1000 XML Tags

Maximum Number of Output Data Points 1000 JSON Fields or 1000 XML Tags

HTTP Services Client: POST only; Server: GET and POST

Modbus TCP/IP Client Features

Modbus Operation Modes
Modbus TCP/IP Client

Function Codes Supported
1, 2, 3, 4, 5, 6, 15 & 16

Byte and Word Swapping

Maximum Modbus TCP/IP Server Devices

Number Read/Write Scan Lines per Server Device
200 Total - 100 reads & 100 writes

Scan Line Support
Up to 125 Registers or 512 Coils

Gateway Security

You can configure up to 9 different users access to diagnostic and configuration screens.


Set <, <=, >=, >, ==, !=, and Change-of-State rules on any data moving through the gateway. If alarm rule is triggered an email notification can be sent.

Translation Table

Allows for data manipulation during protocol translation. Scaling and other data format changes can occur in the gateway.

Status and Counters

Protocol specific status, counters and error messages are accessible within the gateways diagnostics page. They can also be delivered to a connected device.

Diagnostic Logging Page

Allows users to see and log start up sequences, protocol specific messages & error messages.


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