Overview
The ABB PM581-ETH, also cataloged as the PM581 Processor Module, operates as a dedicated hardware component for controller execution, Ethernet communication, and process data handling within ABB AC500 automation systems. The processor integrates CPU resources, memory functions, Ethernet networking, and serial communication interfaces to exchange data between application programs and connected I/O devices.
Suffix Breakdown & Model Matrix
The designation PM581-ETH identifies an AC500 processor module equipped with an integrated Ethernet communication interface. The available documentation does not define additional configurable suffix variants for this model. ABB catalog number: 1SAP140100R0270.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | PM581-ETH |
| Brand | ABB |
| Product Series | AC500 |
| Product Type | Processor Module |
| Product ID | 1SAP140100R0270 |
| User Program Memory | 128 KB |
| Communication Interface | Ethernet |
| Serial Interfaces | 2 x RS232/485 |
| Supply Voltage | 24 VDC |
| Supply Voltage Range | 20.4 to 28.8 VDC |
| Protection Rating | IP20 |
| Mounting Method | DIN Rail |
| Operating Temp | 0 to 60 deg C |
| Storage Temp | -40 to 70 deg C |
| Dimensions | 76 x 67.5 x 62 mm |
| Weight | Approximately 0.137 kg |
| Origin | Germany / Finland |
| Power Consumption | Not specified in available documentation |
Profinet and Ethernet Communication Architecture
The PM581-ETH processor combines controller execution functions with integrated Ethernet communication capability. In addition, the Ethernet interface supports engineering access, controller communication, and network-based data exchange within the AC500 platform.
As system complexity increases, the processor manages communication traffic between application tasks and connected I/O resources. Furthermore, Ethernet connectivity simplifies integration with supervisory systems and engineering workstations. Before commissioning, engineers should verify communication parameters, IP addressing, and firmware compatibility across all connected devices. As a result, consistent configuration practices help maintain predictable network communication and controller operation.
Frequently Asked Questions
Q: Does the PM581-ETH include an integrated Ethernet interface?
A: Yes. The processor incorporates a built-in Ethernet communication interface together with two RS232/485 serial ports.
Q: Can firmware revisions affect communication compatibility?
A: Yes. Firmware revisions may influence Ethernet services, hardware recognition, and engineering software support. Therefore, engineers should verify firmware compatibility before performing upgrades or downloading applications.
Q: Does ABB specify hot-swapping for processor replacement?
A: The available documentation does not specify hot-swap capability for the PM581-ETH. Consequently, technicians should remove controller power before replacing the processor module unless ABB service procedures state otherwise.
Field Installation Guidelines
- First, install the processor onto the designated AC500 DIN rail and verify correct mechanical locking.
- Next, confirm that the power supply remains within the specified 20.4 to 28.8 VDC operating range before energizing the controller.
- Additionally, route Ethernet and serial communication cables separately from motor feeders, drive output wiring, and other high-current conductors.
- During installation, terminate cable shields according to plant grounding practices and maintain continuity of the protective earth system.
- Before startup, inspect all communication connectors, terminal wiring, and module interfaces for proper seating.
- Furthermore, verify Ethernet addressing, network configuration parameters, and firmware compatibility across connected devices.
- Finally, perform communication diagnostics and controller verification prior to placing the automation system into service.
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