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The ABB PM571-ETH PLC CPU Module is a compact yet powerful controller designed for the AC500 automation platform. It functions as the central processing unit of the PLC system, executing control logic, managing I/O communication, and enabling reliable data exchange across industrial networks.

Built for flexible industrial automation architectures, the PM571-ETH integrates Ethernet connectivity, dual configurable serial communication interfaces, and advanced processing performance within a compact hardware design. This allows seamless communication with operator interfaces, distributed I/O stations, and supervisory control systems.

Engineered for reliability and long-term industrial operation, the controller supports real-time automation tasks, fast program execution, and stable system diagnostics through its built-in display and status indicators. Its DIN-rail mounting design ensures easy installation within industrial control cabinets, making it a dependable solution for machine control, process automation, and infrastructure systems.

Technical Specifications

Parameter	Specification
Brand	ABB
Model	PM571-ETH
Module Type	PLC CPU Module
PLC Platform	AC500
Power Supply	24 V DC
Program Memory	64 kB
Data Memory	24 kB
Processor	Industrial PLC CPU
Communication Interfaces	1 × Ethernet, 2 × RS232/RS485 configurable
Fieldbus Interface	FieldBusPlug supported
Expansion Capability	Up to 10 local I/O modules
Display	Integrated LCD status display
Programming Software	ABB Automation Builder (IEC 61131-3)
Protection Rating	IP20
Operating Temperature	-20°C to +60°C
Mounting	DIN Rail
Dimensions (L × W × H)	62 × 67.5 × 76 mm
Weight	0.152 kg

The PM571-ETH CPU executes automation programs, manages communication, and coordinates distributed I/O operations within the AC500 control architecture.

Recommended Related Models

The following modules are frequently deployed together with the PM571-ETH controller in ABB automation systems:

ABB PM571 PLC CPU Module
ABB PM582-ETH PLC CPU Module
ABB PM581-ETH PLC CPU Module
ABB CI801 Communication Interface Module
ABB AI830A Analog Input Module

These modules expand system functionality by enabling additional I/O capacity, communication interfaces, and advanced process monitoring.

Popular Allen Bradley Models

In large automation projects, engineers often work with multiple control platforms. The following Allen Bradley modules are widely used in similar PLC control architectures:

Allen Bradley 1756-L73 ControlLogix CPU Module
Allen Bradley 1769-L33ER CompactLogix Controller
Allen Bradley 1756-EN2T Ethernet Communication Module
Allen Bradley 1756-IB16 Digital Input Module
Allen Bradley 1756-OB16E Digital Output Module

These controllers are commonly implemented in high-performance industrial automation environments.

Applications

The ABB PM571-ETH PLC controller is designed for distributed automation systems that require reliable processing and network communication.

Typical industrial applications include:

Industrial machine automation
Manufacturing production lines
Packaging and assembly systems
Water and wastewater treatment automation
Energy monitoring and power management systems
Infrastructure and building automation

Its Ethernet communication capability enables remote diagnostics, centralized monitoring, and efficient data exchange across industrial networks.

Advantages

Integrated Ethernet Connectivity
Built-in Ethernet communication simplifies connection with industrial networks, HMI systems, and supervisory control platforms.

High System Flexibility
Supports multiple communication protocols and up to 10 expansion modules for scalable automation architectures.

Reliable Industrial Operation
Engineered for continuous operation in demanding industrial environments with stable performance.

Compact DIN-Rail Design
Space-saving hardware design allows easy installation in control cabinets with limited space.

Efficient Automation Control
Combines processing capability, communication interfaces, and system diagnostics into a single controller for optimized automation systems.

Technical FAQs

1. What type of controller is ABB PM571-ETH?
It is a PLC CPU module used in the ABB AC500 automation platform.

2. What power supply does the controller require?
The module operates using a 24 V DC industrial power supply.

3. Does the PLC support Ethernet communication?
Yes, the controller includes an integrated Ethernet interface for industrial networking.

4. How many communication ports are available?
The module includes Ethernet and two configurable RS232/RS485 serial ports.

5. Can additional I/O modules be connected?
Yes, up to 10 expansion I/O modules can be connected locally.

6. What programming software is used for configuration?
The PLC can be programmed using ABB Automation Builder based on IEC 61131-3 programming languages.

7. Does the controller support data storage?
Yes, it supports SD card storage for program backup and data management.

8. What industries typically use this PLC?
Manufacturing, utilities, infrastructure automation, and machine control industries commonly deploy this controller.

9. What installation method is used for the module?
The PLC is designed for DIN-rail mounting inside industrial control cabinets.

10. Why choose the ABB PM571-ETH PLC module?
It provides reliable PLC performance, integrated Ethernet communication, scalable expansion capability, and compact industrial design.

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