PM573-ETH processor module: communications, memory and AC500 system fit

PM573-ETH is an ABB AC500 V2 processor module with 512 kB memory, 24 V DC supply, two RS-232/485 interfaces, an FBP interface and onboard Ethernet. ABB’s product information also lists a display, memory-card slot, web-server and protocol capabilities. The exact available functions depend on firmware, engineering tools and system version, so confirm them against the CPU documentation used on the project.

Key technical data

The values above are intended to identify the listed version and support an initial technical review. Confirm applicable standards, rating conditions, installed accessories and the current ABB documentation for the serial number or revision before design approval, replacement or commissioning.

Application and engineering focus

Assess the controller’s task cycle, memory needs, communication connections, I/O expansion and application lifecycle before adopting this processor. Confirm that the installed AC500 generation and engineering software support the intended CPU and that the required fieldbus or serial protocol is available in the current firmware. Check program conversion, libraries, memory card and online-change constraints before a replacement or modernization.

Configuration, compatibility and related references

Verify the PM573-ETH firmware revision, system image, expansion modules, terminal base and power supply. A processor module is not a standalone replacement for a complete PLC assembly; the hardware configuration and project must agree. Confirm Ethernet addressing, serial port mode, FBP usage and protocol licensing. Related AC500 processor modules are not interchangeable on memory, interface or lifecycle assumptions.

The related designations below are comparison references, not automatic substitutes. Confirm the complete type code, order number, interface, ratings and revision against the approved application before selecting an alternative.

• PM573-ETH(1SAP130300R0271)

Installation and commissioning checks

Back up the application, hardware configuration, communication settings and retained data before service. Isolate the 24 V supply and follow anti-static handling procedures. After installation, verify CPU status LEDs, project compatibility, clock and network configuration, then test I/O mapping, communications, watchdog behavior and restart recovery. Perform a controlled functional test with outputs inhibited until the responsible engineer approves the application state.

During commissioning, verify the nameplate, configuration, wiring and diagnostics before enabling normal operation. Test the relevant signal path or protection response end to end under controlled conditions. Record settings and as-left measurements, and investigate abnormal values at the sensor, load, wiring or system configuration before replacing components.

Ordering, replacement and application information

For a quotation or replacement review, provide the complete designation 1SAP130300R0271 PM573-ETH, ABB order code where available, serial or hardware revision, quantity, installation environment, connected equipment, interface requirements and target delivery date. Include a clear rating-label photograph and relevant wiring, loop or panel drawing when possible.

Ask the supplier to confirm the exact configuration, accessories, revision and any approved successor in writing. Do not select solely from a family name or product photograph. For safety, grid-protection, medium-voltage or regulated applications, obtain review by the responsible qualified engineer and follow local codes and the manufacturer’s instructions.