Allen-Bradley Micro800 PLC Family: Scalable Control for Every Application

In today’s competitive industrial environment, flexibility, scalability, and cost-efficiency are critical. The Allen-Bradley Micro800 PLC family by Rockwell Automation delivers a compact yet powerful solution tailored for small to mid-size control systems. Whether you're automating a standalone machine or integrating modular control into a distributed system, the Micro800 series meets diverse needs with ease.

This blog explores each controller in the Micro800 lineup, including the Micro810, Micro820, Micro830, Micro850, and Micro870, along with Micro800 Plug-in Modules—highlighting how these programmable logic controllers empower OEMs and machine builders to design smarter.

Allen-Bradley Micro810 PLC | Compact Programmable Logic Controller

The Micro810 is perfect for basic control tasks, such as lighting, irrigation, and small pumps. It includes built-in smart relay functionality, eliminating the need for external relays or timers. With support for up to 12 I/O points and embedded LCD displays, the Micro810 offers ease of use and quick deployment in tight spaces.

Key Features:

• 12-point models available

• Embedded LCD for local programming

• Ideal for simple standalone applications

👉 Allen-Bradley Micro810 PLC Collection

Allen-Bradley Micro820 PLC | Modular Controller with Ethernet

Designed for remote applications, the Micro820 features built-in Ethernet, microSD data logging, and RS-232/RS-485 communication, making it ideal for water/wastewater, energy monitoring, and data acquisition projects. With 20 I/O points and support for Modbus RTU/TCP, it balances power and footprint efficiently.

Key Features:

• 20-point controller

• Embedded Ethernet port

• Data logging via microSD

• Real-time clock

👉 Allen-Bradley Micro820 PLC Collection

Allen-Bradley Micro830 PLC | Flexible Control for Machines

The Micro830 provides flexibility for machine-level control with up to 30 I/O points, high-speed counters, and motion control capabilities. With its expandability and support for multiple plug-in modules, it's a great choice for packaging, conveyor systems, and automated machinery.

Key Features:

• Expandable I/O up to 88 points

• Motion control support

• 100 kHz high-speed counters

👉 Allen-Bradley Micro830 PLC Collection

Allen-Bradley Micro850 PLC | Scalable Control for Mid-Size Machines

As one of the most versatile models, the Micro850 can manage complex machine control, batch processing, and HVAC systems. With EtherNet/IP connectivity, USB programming, and up to 132 digital I/O, the Micro850 suits OEMs looking to reduce wiring while maintaining control flexibility.

Key Features:

• Up to 132 I/O

• Dual Ethernet ports

• PID and motion control

• Expandable with plug-in and expansion I/O modules

👉 Allen-Bradley Micro850 PLC Collection

Allen-Bradley Micro870 PLC | High-Performance Controller

The Micro870 is the flagship model in the Micro800 family. Built for large-scale and performance-intensive applications, it supports up to 304 I/O points, making it ideal for systems with multiple axes, complex batch processes, or high-speed requirements.

Key Features:

• 280 KB user memory

• 24 KB retentive data

• Built-in Ethernet and USB ports

• Program multiple machines from one controller

👉 Allen-Bradley Micro870 PLC Collection

Allen-Bradley Micro800 Plug-in Modules | Expansion with Ease

One of the greatest strengths of the Micro800 family is its modular plug-in architecture. These modules allow for I/O expansion, communication add-ons, RTC functionality, and even analog signal conditioning—customizing the controller to your exact application needs.

Popular Micro800 Plug-in Modules:

• RTC plug-ins

• Analog input/output modules

• Serial communication plug-ins

• Digital I/O expansion

👉 Allen-Bradley Micro800 Plug-in Modules Collection

Why Choose Allen-Bradley Micro800 PLCs?

Allen-Bradley’s Micro800 family offers a powerful blend of affordability, modularity, and scalability. Engineered with Connected Components Workbench (CCW) software, the entire lineup ensures seamless integration and fast deployment. These controllers are trusted worldwide by engineers, system integrators, and OEMs for reliable automation.

Note: As a trusted source of industrial automation products, we ensure you access genuine Allen-Bradley equipment, including full support for specification, pricing, and global shipping.

Frequently Asked Questions (FAQ)

Q: Are Micro800 PLCs suitable for motion control?
A: Yes. Micro830, Micro850, and Micro870 support motion control via PTO outputs and motion instructions.

Q: Can I use plug-in modules across different Micro800 PLCs?
A: Yes, most plug-in modules are compatible across Micro810 to Micro870 models, enabling flexible expansion.

Q: What software is used to program Micro800 controllers?
A: Rockwell Automation’s free Connected Components Workbench (CCW) software is used for programming and configuration.

Q: Are these PLCs compatible with HMI panels?
A: Absolutely. Micro800 PLCs support connection to HMI panels via RS-232, RS-485, or Ethernet, depending on the model.