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- PM581-ETH 1SAP140100R0170 CPU Programmable Logic Controller
- CPU Programmable Logic Controller
- Sweden (SE)
- 70 × 125 × 117 mm
- 0.5 kg
- Xiamen, China
- New & In Stock
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Product Overview
The ABB PM581-ETH (Part Number: 1SAP140100R0170) is a high-performance CPU Programmable Logic Controller (PLC) from the ABB AC500 series. It is designed for medium to large industrial automation applications requiring reliable processing, Ethernet networking, flexible communication, and scalable I/O expansion.
The controller features 512 kB user program memory, an integrated Ethernet interface, dual RS232/RS485 serial ports, a FieldBusPlug (FBP) interface, an SD card slot for data storage and backup, and an integrated LCD display. Its robust design makes it suitable for machine control, process automation, and distributed industrial systems.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Model | PM581-ETH |
| Part Number | 1SAP140100R0170 |
| Product Type | CPU Programmable Logic Controller |
| PLC Series | AC500 |
| User Program Memory | 512 kB |
| Communication Interfaces | 1 × Industrial Ethernet |
| Serial Communication | 2 × RS232 / RS485 |
| FieldBusPlug (FBP) Interface | Supported |
| Memory Expansion | SD Card Slot |
| Display | Integrated LCD Display |
| Supply Voltage | 24 V DC |
| Power Consumption | Approximately 15 W |
| Protection Rating | IP20 |
| Mounting Method | DIN Rail |
| Dimensions | 70 × 125 × 117 mm |
| Weight | 0.5 kg |
Function and Working Principle
The PM581-ETH serves as the central controller of an ABB AC500 automation system. It continuously reads signals from connected input devices, executes the user application program, processes control algorithms, and updates outputs in real time.
The integrated Ethernet interface enables communication with SCADA systems, HMIs, engineering workstations, and other PLCs. Dual RS232/RS485 ports allow connection to serial devices such as drives, barcode readers, energy meters, and controllers. The SD card slot supports application backup, firmware updates, and data logging.
Operating Sequence
- Input devices transmit signals to the controller.
- The CPU scans and processes the input data.
- PLC logic is executed according to the application program.
- Output commands are transmitted to connected field devices.
- Process data is exchanged through Ethernet and serial communication interfaces.
Key Features
- High-performance AC500 PLC CPU
- 512 kB user program memory
- Industrial Ethernet communication
- Dual RS232 / RS485 serial interfaces
- FieldBusPlug (FBP) expansion support
- SD card slot for program backup and storage
- Integrated LCD display
- DIN rail mounting
- Reliable industrial-grade performance
System Role
The PM581-ETH functions as the central processing unit within an ABB AC500 automation system, coordinating logic execution, communication, data management, and control of distributed I/O modules.
Typical System Architecture
Sensors → PM581-ETH CPU PLC → Ethernet / Serial Network → HMI / SCADA → Actuators
Industrial Applications
The PM581-ETH is widely used in:
- Factory automation
- Machine control
- Packaging machinery
- Conveyor systems
- Material handling equipment
- Water and wastewater treatment
- Building automation
- Energy management systems
- OEM equipment
- General industrial process control
Installation Guidelines
- Mount the controller securely on a DIN rail.
- Connect a regulated 24 V DC power supply.
- Wire input and output devices according to the control system design.
- Configure Ethernet and serial communication parameters.
- Download the PLC application using ABB engineering software.
- Verify communication and I/O operation before commissioning.
Compatible Components
The PM581-ETH is compatible with:
- ABB AC500 I/O Modules
- ABB Communication Modules
- ABB Human Machine Interface (HMI) Panels
- SCADA Systems
- Industrial Ethernet Switches
- FieldBusPlug (FBP) Modules
- RS232 / RS485 Serial Devices
- ABB Automation Builder Software
Alternative Models
| Model | Description |
|---|---|
| PM571-ETH | Entry-level CPU Programmable Logic Controller |
| PM573-ETH | Mid-range CPU Programmable Logic Controller |
| PM583-ETH | Advanced CPU Programmable Logic Controller |
| PM5630-2ETH | High-performance Processor Module |
| PM5650-2ETH | Advanced Processor Module |
Advantages
- High processing performance
- Large 512 kB user program memory
- Integrated Ethernet networking
- Flexible serial communication options
- SD card support for backup and storage
- Expandable via FBP modules
- Compact and robust industrial design
- Reliable operation in demanding environments
Frequently Asked Questions
What is the PM581-ETH used for?
It is used as a CPU Programmable Logic Controller for industrial automation, machine control, and process control applications.
How much program memory does it provide?
The controller provides 512 kB of user program memory.
Which communication interfaces are available?
It supports one Industrial Ethernet interface, two RS232/RS485 serial ports, and FieldBusPlug (FBP) communication modules.
Does it support memory expansion?
Yes. The integrated SD card slot allows application storage, firmware updates, backups, and data logging.
How is the controller installed?
The PM581-ETH is designed for DIN rail mounting and operates from a 24 V DC power supply.
Conclusion
The ABB PM581-ETH (1SAP140100R0170) CPU Programmable Logic Controller is a powerful controller in the ABB AC500 PLC family. Featuring 512 kB user program memory, Industrial Ethernet, dual RS232/RS485 communication interfaces, FieldBusPlug support, an SD card slot, and an integrated LCD display, it provides dependable performance, flexible connectivity, and scalable control for a wide variety of industrial automation and machine control applications.