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The ABB PM591-ETH CPU Module is a powerful programmable logic controller designed for the AC500 PLC automation platform, providing reliable control performance and integrated Ethernet connectivity for modern industrial automation systems. Built with advanced processing architecture, this CPU module enables efficient execution of automation programs, real-time data processing, and seamless communication between field devices and supervisory control systems.

With its built-in Ethernet interface, the PM591-ETH allows easy integration into industrial networks, SCADA systems, and distributed control architectures. The controller supports flexible system expansion through compatible I/O modules and communication interfaces, making it suitable for both medium-sized automation applications and complex industrial control environments.

Engineered with ABB’s industrial reliability standards, the PM591-ETH ensures stable operation in demanding environments such as manufacturing plants, energy facilities, and automated production lines. Its compact DIN-rail design simplifies installation while maintaining excellent performance and durability.

Technical Specifications

Parameter	Specification
Model	PM591-ETH
Brand	ABB
Product Type	CPU Module
PLC Series	AC500
Processor Type	Industrial PLC CPU
Communication Interface	Ethernet, RS232 / RS485
Programming Standard	IEC 61131-3
Power Supply	24 V DC
Program Memory	4 MB
Mounting	DIN Rail
Protection Rating	IP20
Dimensions (L × W × H)	135 × 90 × 65 mm
Weight	0.47 kg

Recommended Related Models

Model	Description
PM591-2ETH	Dual Ethernet PLC CPU
PM590-ETH	High-performance PLC controller
PM585-ETH	Ethernet-enabled PLC processor
PM583-ETH	Compact automation CPU module
PM582-ETH	Industrial PLC controller

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Applications

The ABB PM591-ETH PLC CPU module is widely used in industrial automation environments requiring reliable processing power and stable communication infrastructure.

Typical applications include:

Industrial manufacturing automation systems
Process control and plant automation
Machine building and equipment control
Energy management and utility automation
Material handling and logistics systems
Smart factory and digital production environments

Its Ethernet communication capability ensures seamless connectivity between PLC systems, operator interfaces, and monitoring platforms.

Advantages

Integrated Ethernet Networking
The built-in Ethernet interface enables fast communication with industrial networks and automation devices.

Powerful PLC Processing
The module provides reliable execution of complex control logic for industrial automation tasks.

Flexible System Expansion
Compatible with a wide range of ABB I/O modules and communication adapters, allowing scalable automation solutions.

Compact Cabinet Installation
DIN-rail mounting simplifies installation within industrial control cabinets.

Industrial Reliability
Designed to operate continuously in demanding environments with high stability and durability.

Technical FAQs

1. What is the main function of the ABB PM591-ETH module?
It acts as the central PLC CPU responsible for executing automation programs and controlling industrial processes.

2. Does the PM591-ETH support Ethernet communication?
Yes, the controller includes an integrated Ethernet interface for network connectivity.

3. Which PLC platform uses this CPU module?
The module belongs to the ABB AC500 PLC automation system.

4. What type of power supply is required?
The controller operates using a 24 V DC industrial power supply.

5. Can the PM591-ETH connect to distributed I/O modules?
Yes, it supports expansion through compatible I/O modules and communication interfaces.

6. What programming standard does the module support?
It supports IEC 61131-3 programming languages used for PLC development.

7. Is the controller suitable for complex automation systems?
Yes, it is designed for medium to large automation applications requiring stable control.

8. What installation method is used for this module?
The module is installed on a DIN rail inside an industrial control cabinet.

9. Can it communicate with SCADA systems?
Yes, the Ethernet interface allows integration with SCADA and monitoring platforms.

10. Why choose the ABB PM591-ETH CPU module?
It offers reliable PLC performance, integrated Ethernet communication, flexible expansion capability, and long-term industrial stability.

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