PM573-ETH, article 1SAP130300R0271, is an AC500 standard processor module for 24 V DC control systems. It combines 512 kB memory with onboard Ethernet, two configurable RS-232/485 serial interfaces, one FieldBusPlug interface, an integrated display and memory-card support.

The Ethernet interface supports controller communication, web-server functions, SNTP time synchronization and IEC 60870-5-104 within the documented system configuration. The CPU mounts on a compatible TB5x1-ETH terminal base and supports local AC500 I/O expansion.

Manufacturer	ABB
Product Family	AC500 V2
Model	PM573-ETH
Article Number	1SAP130300R0271
Controller Class	Standard processor module
Memory	512 kB
Supply Voltage	24 V DC
Ethernet Interfaces	1 onboard TCP/IP interface
Serial Interfaces	2 configurable RS-232/485 interfaces
FieldBusPlug Interface	1
Display	Integrated
Memory Card	Supported
Ethernet Functions	Web server, SNTP and IEC 60870-5-104 support
Local Expansion	Up to 10 AC500 I/O modules
Lifecycle	Classic

• Executes IEC 61131-3 automation applications with 512 kB controller memory.
• Provides Ethernet access for engineering and supported industrial TCP/IP services.
• Allows each of the two serial channels to be configured for RS-232 or RS-485 communication.
• Uses the onboard display for controller status, diagnostics and service interaction.
• Accepts an AC500 memory card for application handling and maintenance workflows.
• Connects to distributed networks through the dedicated FieldBusPlug interface.

• Requires a TB5x1-ETH terminal base; the terminal-base order rubric paired with this processor generation is R0270.
• TB511-ETH, TB521-ETH and TB541-ETH are terminal-base family variants with different communication-slot capacities.
• Works with the AC500 V2 controller and S500 I/O architecture when the project, firmware and module catalog are aligned.
• Serial and Ethernet parameters must match the installed network devices and the saved engineering project.
• The complete CPU article number should be checked because processor revisions can carry different firmware requirements.

• Treat PM573-ETH as a Classic lifecycle product intended primarily for installed-base service.
• For a like-for-like exchange, retain the terminal base, memory card, communication-slot modules and project backup.
• Record the Ethernet address, serial modes, FieldBusPlug configuration and I/O order before removing the installed CPU.
• A migration to a current AC500 V3 CPU requires a project, terminal-base, communication and firmware review rather than a direct assumption of interchangeability.
• Commission every network and local I/O exchange after hardware replacement or platform migration.

Which terminal base is required for PM573-ETH?

The processor requires a compatible TB5x1-ETH base selected for the communication-slot needs of the station.

How many serial interfaces does this CPU provide?

It provides two interfaces that can be configured for RS-232 or RS-485 operation.

Does PM573-ETH include Ethernet?

Yes. One onboard Ethernet TCP/IP interface supports engineering and documented controller services.

Can the CPU use a memory card?

Yes. Memory-card support is included for application and service handling.

How many local I/O modules can be connected?

The documented AC500 configuration supports up to ten local I/O modules, subject to system rules.

What should be saved before replacing the processor?

Save the project, firmware level, memory-card content, Ethernet and serial settings, FieldBusPlug configuration and complete module order.