Industrial Wireless Access Point: Complete Guide for Industrial WiFi Networks

 Introduction

 With the rapid development of smart manufacturing, Industrial Internet of Things (IIoT), and digital transformation, reliable wireless communication has become an essential part of modern industrial networks.

 Traditional wired networks provide stable communication; however, they may face challenges in complex industrial environments, including: 

• High installation costs for extensive cabling

• Difficult maintenance in large facilities

• Limited flexibility for mobile equipment

• Challenges connecting distributed industrial devices

 An Industrial Wireless Access Point (Industrial WiFi AP) provides a flexible and reliable wireless networking solution by connecting industrial devices such as PLCs, sensors, industrial cameras, robots, AGVs and IoT terminals with industrial Ethernet networks and cloud platforms.

 Unlike commercial WiFi access points designed for offices and homes, industrial wireless APs are engineered for demanding environments with:

• Industrial-grade anti-interference capability

• Rugged mechanical design

• Wide operating temperature range

• High-density terminal connectivity

• Stable 24/7 operation

 MAXON Industrial Wireless Access Points provide reliable wireless communication solutions for factory automation, smart manufacturing, pipe gallery, transportation and industrial IoT applications.

 What Is an Industrial Wireless Access Point?

 An Industrial Wireless Access Point (Industrial AP) is a network device that provides wireless connectivity between industrial terminals and wired industrial infrastructure.

The main function of an Industrial AP is to create a bridge between Wireless Industrial Devices and Industrial Network Backbone.

Typical connected devices include:

• PLC controllers

• Industrial sensors

• Industrial cameras

• Robots

• AGV/AMR systems

• Remote monitoring terminals

• IoT gateways

Industrial Wireless Network Architecture

A typical industrial wireless network consists of multiple layers, connecting field devices, wireless communication infrastructure and centralized monitoring platforms.

The network architecture usually includes the following components:

1. Industrial Devices Layer

At the field level, industrial devices generate production and operational data, including:

• PLC controllers

• Industrial sensors

• Industrial cameras

• Robots

• AGVs (Automated Guided Vehicles)

 These devices collect real-time information and transmit data through wireless connections.

 2. Industrial Wireless Access Layer

 The Industrial Wireless Access Point provides wireless connectivity between field devices and the industrial network.

 It is responsible for: 

• Receiving wireless data from industrial terminals

• Transmitting control commands to field devices

• Managing wireless connections

• Providing reliable WiFi communication in industrial environments 

3. Industrial Network Backbone Layer

 The Industrial Wireless AP connects to the wired network backbone through: 

• Ethernet

• Fiber optic networks

 This layer provides high-speed and stable data transmission between wireless devices and industrial control systems.

4. Industrial Control and Management Layer

 Industrial control platforms receive and process data from field devices.

 Typical systems include: 

• SCADA (Supervisory Control and Data Acquisition) systems

• Industrial control platforms

• Manufacturing execution systems (MES) 

They enable: 

• Equipment monitoring

• Process control

• Production management 

5. Cloud Monitoring Layer 

Cloud platforms provide remote access, data analysis and intelligent management. 

They support applications such as: 

• Remote equipment monitoring

• Predictive maintenance

• Industrial IoT data analytics

• Centralized operation management 

In this architecture, the Industrial Wireless Access Point acts as a communication bridge between field devices and higher-level industrial systems, enabling reliable wireless connectivity for smart manufacturing, industrial IoT and automation applications. 

The Industrial AP receives wireless data from field devices, processes network traffic and forwards information through Ethernet or fiber networks to industrial control systems. 

Industrial Wireless Access Point vs Commercial WiFi Access Point

Although both devices provide wireless connectivity, industrial APs are designed for completely different environments.

Relationship Between Access Point, WiFi and WLAN

Many users confuse AP, WiFi and WLAN. Although these terms are related, they represent different concepts.

What Is WiFi?

WiFi is a wireless communication technology based on the IEEE 802.11 standard.

The WiFi Alliance manages certification to ensure interoperability between wireless devices from different manufacturers.

WiFi defines:

• Wireless communication protocols

• Frequency bands

• Transmission methods

• Security mechanisms

Common WiFi generations include:

What Is WLAN?

WLAN stands for:

Wireless Local Area Network

A WLAN is a complete wireless network system that allows devices to communicate without physical cables.

A WLAN may include:

• Wireless Access Points

• Wireless Controllers (AC)

• Network switches

• Authentication systems

• Wireless terminals

In industrial applications, WLAN usually refers to wireless networks based on IEEE 802.11 standards.

Simple Explanation of AP, WiFi and WLAN

The relationship can be explained simply:

 WiFi: The wireless communication technology

 Access Point (AP): The hardware device that provides wireless access

 WLAN: The complete wireless network system built with APs and related equipment

 For example:

 An AGV connects to an Industrial AP through WiFi.

 The Industrial AP connects the AGV to the factory WLAN.

 The WLAN transfers production data to SCADA or cloud monitoring platforms.

How Does an Industrial Wireless Access Point Work? 

An Industrial Wireless Access Point works as a communication bridge between wireless terminals and industrial networks.

The basic communication process includes:

1. Data generation

2. Data processing

3. Wireless transmission

4. Signal reception

5. Network forwarding

 The complete wireless communication process involves several key technologies: 

• Source coding

• Channel coding

• Modulation

• Air interface transmission

• Wireless channel management

Industrial Wireless Communication Process

Industrial wireless communication starts with field devices such as PLCs, sensors, cameras and robots generating operational data. The data is processed and transmitted through wireless communication technologies before reaching the Industrial Wireless Access Point.

The Industrial AP receives wireless data from field devices and forwards it through an Industrial Ethernet or fiber backbone to SCADA systems, industrial control platforms and cloud monitoring platforms.

This communication architecture enables reliable wireless connectivity between industrial equipment and centralized management systems for factory automation, industrial IoT and smart manufacturing applications.

For more details about wireless transmission technologies such as source coding, channel coding, QAM and OFDM, please refer to our technical guide: How Does an Industrial Wireless Access Point Work?

Key Technologies Behind Industrial WiFi Communication

1. Source Coding

 Industrial devices generate different types of information.

 Examples: 

• Cameras generate video streams

• Sensors generate measurement data

• PLCs generate control commands

 Source coding converts original information into digital data while reducing unnecessary redundancy. 

The purpose is to: 

• Reduce data size

• Improve transmission efficiency

• Maintain required information accuracy

 For example, industrial video systems may use compression technologies such as H.264/H.265 to reduce bandwidth consumption. 

2. Channel Coding 

Wireless communication is affected by: 

• Electromagnetic interference

• Signal attenuation

• Environmental noise 

Channel coding improves communication reliability by adding error detection and correction information. 

Common WLAN channel coding technologies include: 

3. BCC (Binary Convolutional Coding)

 Used in earlier wireless communication systems.

 4. LDPC (Low-Density Parity Check)

Provides stronger error correction performance and is widely used in: 

• WiFi 5

• WiFi 6

• WiFi 7

 For industrial applications, channel coding helps maintain reliable wireless communication in challenging environments.

Frequently Asked Questions (FAQ)

Q: What is an Industrial Wireless Access Point?

A: An Industrial Wireless Access Point is a ruggedized network device that provides wireless connectivity between industrial terminals and wired industrial networks.

Unlike commercial WiFi access points, industrial APs are designed for demanding environments with features such as:

• Industrial-grade anti-interference capability

• Wide temperature operation

• High-density device connectivity

• Long-term 24/7 operation

Industrial APs are commonly used in factories, automation systems, IIoT networks, transportation and energy applications.

Q: What is the difference between an industrial wireless access point and a commercial WiFi access point?

A: he main difference is reliability and environmental adaptability.

Industrial Wireless Access Points are designed for harsh industrial environments, while commercial WiFi products are mainly designed for offices and homes.

Key differences include:

 Industrial APs are better suited for factories, automation systems and outdoor industrial applications.

Q:How many devices can connect to an Industrial Wireless Access Point?

A:The maximum number of connected devices depends on: 

• AP hardware capability

• WiFi standard

• Data traffic requirements

• Wireless environment

 MAXON Industrial Wireless Access Points support high-density device connectivity, with models capable of supporting 128 to 256 wireless terminals.

 They are suitable for applications such as: 

• Smart factories

• AGV systems
• Industrial IoT networks
• Large-scale monitoring systems 

Q:What is the relationship between WiFi, WLAN and Access Point?

 A:WiFi, WLAN and Access Point represent different concepts: 

• WiFi is the wireless communication technology based on IEEE 802.11 standards.

• Access Point (AP) is the hardware device that provides wireless access.

• WLAN is the complete wireless local area network built with APs, terminals and network equipment. 

In an industrial environment, an Industrial AP uses WiFi technology to connect devices and becomes a key component of the industrial WLAN system. 

 Q: What industries use Industrial Wireless Access Points?

 Industrial Wireless Access Points are widely used in: 

• Smart manufacturing

• Factory automation

• Industrial IoT

• AGV/AMR systems

• Oil & gas monitoring

• Transportation systems

• Warehouse automation 

They enable reliable wireless communication between industrial devices, control systems and cloud platforms.