Cloud PLC - Ethernet

COMPONENTS

PROJECT DESCRIPTION

Overview

Cloud PLC Ethernet is an industrial controller developed by Research Design Lab.

It is designed for industrial automation, remote monitoring, data logging, and edge gateway applications.

The product provides isolated analog inputs, digital inputs, digital outputs, relay output, RS485, Ethernet, Wi-Fi, Bluetooth, SD card storage, and RTC.

In this product, WIZnet W5500 is used for Ethernet communication.

By using W5500, Cloud PLC Ethernet can provide reliable wired network connectivity for industrial protocols such as Modbus TCP, MQTT, RESTful API, TCP/UDP, SNMP, and OPC.

Background

Industrial automation systems require stable communication between field devices and upper-level systems.

Typical devices include:

Sensors
Motors
VFDs
Valves
Energy meters
Actuators
Relays
SCADA systems
HMI panels

Many industrial sites still use RS485 and Modbus RTU for field-level communication.

However, modern monitoring systems increasingly require Ethernet-based communication for SCADA, cloud platforms, dashboards, and remote control.

This creates a need for an industrial controller that can collect field data and send it to higher-level systems through Ethernet.

Solution

Cloud PLC Ethernet works as an industrial edge controller.

It collects data from analog inputs, digital inputs, and RS485 devices.
Then it sends the data to SCADA, HMI, cloud platforms, or monitoring servers through Ethernet.

The basic structure is as follows:

Sensors / Field Devices
        |
Analog Input / Digital Input / RS485
        |
Cloud PLC Ethernet
        |
WIZnet W5500
        |
Ethernet
        |
SCADA / HMI / Cloud / Server

W5500 provides the Ethernet interface for the controller.

This allows Cloud PLC Ethernet to support industrial Ethernet communication while keeping the embedded system compact and reliable.

Why W5500?

W5500 is a hardwired TCP/IP Ethernet controller from WIZnet.

It is suitable for this type of industrial controller because it provides stable Ethernet communication through a simple SPI interface.

1. Reliable Ethernet Connectivity

Cloud PLC Ethernet is designed for industrial environments.

In these applications, stable wired communication is important.
W5500 provides reliable 10/100 Ethernet connectivity for continuous monitoring and control.

2. Hardwired TCP/IP Stack

W5500 includes a hardwired TCP/IP stack.

This reduces the network processing burden on the main controller and simplifies Ethernet firmware development.

3. Compact Embedded Design

W5500 integrates Ethernet MAC, PHY, and TCP/IP stack.

This helps developers add Ethernet to compact industrial products without using a more complex Ethernet design.

4. Industrial Protocol Support

Cloud PLC Ethernet supports protocols such as Modbus, MQTT, RESTful API, TCP/UDP, SNMP, and OPC.

W5500 provides the wired Ethernet foundation needed for these TCP/IP-based protocols.

Main Features

Cloud PLC Ethernet includes the following features:

12 isolated analog input channels
4 isolated digital inputs
3 isolated digital outputs / PWM
1 relay output
1 isolated RS485 interface
10/100 Mbps Ethernet
USB device interface
Wi-Fi and Bluetooth
16GB SD card storage
RTC DS3231
9–36V DC power input
Industrial-grade isolated and protected I/O

The analog inputs support 0–10V, 0–24V, and 4–20mA signals.

The RS485 port can be used for Modbus RTU communication.

The Ethernet port can be used for Modbus TCP and other network protocols.

System Architecture

A typical Cloud PLC Ethernet system can be described as follows:

Field Layer
---------------------------------
Analog Sensors
Digital Sensors
RS485 Modbus Devices
Relays / Actuators

Controller Layer
---------------------------------
Cloud PLC Ethernet
WIZnet W5500 Ethernet

Network Layer
---------------------------------
Ethernet Switch / Router
SCADA / HMI / Cloud Platform

Cloud PLC Ethernet acts as a bridge between field devices and network-based monitoring systems.

W5500 handles the Ethernet communication path.

Applications

Cloud PLC Ethernet can be used in many industrial applications, including:

Production monitoring
Process monitoring
Utility monitoring
Condition monitoring
Environment monitoring
Generator monitoring
Cold storage monitoring
Water treatment systems
Greenhouse monitoring
SCADA applications
Industrial data logging
Remote equipment monitoring

These applications require reliable I/O collection and stable Ethernet communication.

WIZnet Maker Angle

For WIZnet Maker, this project is a good example of W5500 used in an industrial PLC and edge gateway product.

The important points are:

Cloud PLC Ethernet is an industrial controller.
It collects analog, digital, and RS485 field data.
It supports industrial protocols such as Modbus, MQTT, RESTful API, TCP/UDP, SNMP, and OPC.
W5500 provides wired Ethernet connectivity.
The product can be used for SCADA, HMI, cloud, and remote monitoring applications.

Recommended wording:

Cloud PLC Ethernet integrates WIZnet W5500 to provide reliable wired Ethernet connectivity for industrial automation, data logging, and edge gateway applications.

Conclusion

Cloud PLC Ethernet is a compact industrial controller for automation, monitoring, and edge gateway applications.

By combining isolated I/O, RS485, Ethernet, wireless communication, SD card storage, and RTC, the product can collect field data and send it to SCADA, HMI, cloud platforms, or monitoring servers.

With WIZnet W5500, Cloud PLC Ethernet provides stable wired Ethernet connectivity for industrial TCP/IP-based communication.

This case shows how W5500 can be used in real industrial PLC products that require reliable Ethernet networking.

Q1: What is Cloud PLC Ethernet?

A1:
Cloud PLC Ethernet is an industrial controller for automation, monitoring, data logging, and edge gateway applications.

Q2: Which WIZnet product is used?

A2:
It uses WIZnet W5500 for Ethernet communication.

Q3: Why is W5500 useful in this product?

A3:
W5500 provides reliable 10/100 Ethernet connectivity with a hardwired TCP/IP stack, reducing the network processing burden on the main controller.

Q4: What I/O does the product provide?

A4:
It provides 12 isolated analog inputs, 4 isolated digital inputs, 3 digital outputs/PWM, 1 relay output, RS485, Ethernet, USB, Wi-Fi, Bluetooth, SD card storage, and RTC.

Q5: What protocols does it support?

A5:
It supports Modbus, MQTT, JSON, RESTful API, TCP/UDP, SNMP, and OPC.

Q6: What applications can use this product?

A6:
It can be used for production monitoring, process monitoring, utility monitoring, condition monitoring, generator monitoring, cold storage monitoring, water treatment, greenhouse monitoring, SCADA, and industrial data logging.

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