PM590-ETH, article 1SAP150000R0271, is an ABB AC500 processor module with 2 MB program memory for more demanding controller applications. The 24 V DC CPU integrates onboard Ethernet, two configurable RS-232/485 interfaces, one FieldBusPlug interface, a display and a memory-card slot.

Its Ethernet services include a web server, SNTP and IEC 60870-5-104. The controller uses a compatible TB5x1-ETH terminal base, which supplies the RJ45 Ethernet connection and establishes the station communication-module arrangement.

Manufacturer	ABB
Product Family	AC500
Model	PM590-ETH
Article Number	1SAP150000R0271
Product Type	High-performance processor module
Program Memory	2 MB
Supply Voltage	24 V DC
Ethernet	1 onboard 10/100 Base-TX interface
Ethernet Connection	RJ45 on a compatible TB5x1-ETH terminal base
Serial Interfaces	2 configurable RS-232/485 interfaces
FieldBusPlug Interface	1
Memory Card Slot	Integrated
Display	Integrated LCD with function keys
Ethernet Services	Web server, SNTP and IEC 60870-5-104
Lifecycle	Active

• Runs AC500 applications with 2 MB of program memory.
• Connects directly to Ethernet through the terminal-base RJ45 interface.
• Supports serial engineering, Modbus, CS31 and serial ASCII communication in the documented configuration.
• Accepts FieldBusPlug connectivity for supported fieldbus architectures.
• Provides local controller information through the LCD and eight function keys.
• Uses a removable memory card for project handling, user data and firmware procedures.

• Larger AC500 machine-control programs that exceed the memory needs of PM58x processors.
• Process and infrastructure systems using Ethernet and serial networks together.
• IEC 60870-5-104 control stations with local AC500 I/O.
• Controllers requiring an onboard web server for supported visualization and service functions.
• Installed AC500 panels where the existing TB5x1-ETH and communication modules must be retained.

• PM590-ETH article 1SAP150000R0271 is in the Active lifecycle phase.
• Do not confuse PM590-ETH with PM590-ARCNET; the integrated communication technology and article suffix differ.
• Preserve the exact terminal base, communication modules, memory card, firmware and application before replacement.
• Confirm that the new processor uses the same Ethernet, serial and FBP parameters as the removed unit.
• Commission the complete controller station after exchange, including every external network and local I/O module.

What differentiates PM590-ETH from PM583-ETH?

PM590-ETH provides 2 MB program memory, while PM583-ETH provides 1 MB; both require their exact project and hardware context.

Is PM590-ETH the same as PM590-ARCNET?

No. PM590-ETH has onboard Ethernet, while the separate PM590-ARCNET variant uses an integrated ARCNET communication module.

Does PM590-ETH include two Ethernet ports?

No. This model has one onboard Ethernet interface; two-port models use a different designation.

Can its serial ports be used for Modbus?

Yes. The configurable RS-232/485 interfaces support the documented Modbus master or slave context.

What is the purpose of the FieldBusPlug interface?

It provides the connection point for supported ABB FieldBusPlug communication solutions.

Which identity must be matched for replacement?

Match PM590-ETH article 1SAP150000R0271 together with the terminal base, project, firmware, memory card and communication modules.