ABB PM590-ETH 1SAP150000R0271 AC500 CPU Upgrade Solution

Product Overview

ABB PM590-ETH 1SAP150000R0271 AC500 CPU Ethernet Upgrade Solution: Seamless Transition from Legacy PLC Systems

The ABB PM590-ETH (order reference 1SAP150000R0271) is a high-performance CPU module within the ABB AC500 programmable logic controller platform, featuring an integrated Ethernet port for real-time industrial communication. For facilities currently operating aging AC500 predecessors — including the PM554-ETH, PM564-ETH, PM572-ETH, or earlier PM581 variants — migrating to the PM590-ETH represents a structured, low-risk upgrade path that preserves existing wiring infrastructure, control cabinet footprint, and communication architecture while delivering substantially expanded memory, faster scan cycles, and broader protocol support.

This product page is designed to support engineers and procurement teams planning a controlled migration from discontinued or end-of-life ABB AC500 CPU modules to the PM590-ETH platform. Whether your facility is replacing a failed unit under emergency conditions or executing a planned lifecycle upgrade, TOPNLMS maintains verified stock of the PM590-ETH 1SAP150000R0271 with pre-shipment functional testing and a 12-month replacement warranty.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful migration to the PM590-ETH 1SAP150000R0271 rarely involves the CPU module alone. In practice, field engineers upgrading from a PM564-ETH or PM572-ETH will typically audit the full control cabinet to assess whether the existing SM560-S digital I/O modules, SM532 analog input modules, and SM538 temperature input modules remain compatible — and in the AC500 ecosystem, they do. The SM5xx signal module family is fully backward-compatible with the PM590-ETH, meaning your existing I/O wiring, terminal assignments, and field device connections can be preserved without modification.

For facilities that previously relied on serial communication via the CM572-DP PROFIBUS DP master module or the CM577-ETH Ethernet communication module, the PM590-ETH’s onboard Ethernet port can absorb many of the tasks previously handled by a standalone CM577-ETH, potentially freeing a backplane slot for additional I/O expansion. Where PROFIBUS DP connectivity to legacy field devices — such as ABB ACS800 or ACS550 variable frequency drives — must be maintained, the CM572-DP continues to operate alongside the PM590-ETH without firmware conflicts.

Control cabinet power infrastructure is equally straightforward. The PS501 and PS502 power supply modules that powered your previous AC500 CPU will supply the PM590-ETH without modification. If your legacy installation used a TB521 or TB541 terminal base, the PM590-ETH mounts directly onto the same base, eliminating the need to disturb field wiring or re-terminate signal cables. This is particularly valuable in retrofit scenarios where minimizing downtime is the primary constraint.

Programming migration from Automation Builder 1.x projects to the Automation Builder 2.x environment required by the PM590-ETH is supported by ABB’s built-in project conversion utility. Engineers who previously programmed PM554-ETH or PM564-ETH controllers using CoDeSys 2.3 structured text or ladder logic will find that the majority of program blocks, function modules, and variable declarations transfer cleanly. HMI panels connected via the CP600 series — including the CP604 and CP607 operator panels — retain their communication links through the PM590-ETH’s Ethernet port using the same IP addressing scheme, requiring only a firmware version check before commissioning.

For installations where the legacy CPU communicated with a SCADA or DCS host via Modbus TCP, the PM590-ETH’s onboard Ethernet interface supports Modbus TCP server and client roles natively, preserving register maps and polling intervals without requiring changes to the supervisory system configuration. This is a critical advantage in process industries — including water treatment, chemical processing, and power generation — where SCADA reconfiguration carries its own validation and compliance burden.

Retrofit Guidance FAQ

Q: Can I reuse my existing terminal base and field wiring when replacing a PM572-ETH with the PM590-ETH?
A: Yes. The PM590-ETH is mechanically and electrically compatible with the TB521, TB541, and TB561 terminal bases used by the PM554, PM564, PM572, and PM581 series. Field wiring, I/O terminal assignments, and signal cable routing do not need to change.

Q: Will my SM5xx I/O modules continue to work after the CPU upgrade?
A: Yes. The entire SM5xx signal module family — including digital input/output modules, analog modules, and specialty modules such as the SM538 for temperature measurement — is fully compatible with the PM590-ETH. No firmware updates to the I/O modules are required in most cases.

Q: How do I migrate my existing Automation Builder 1.x program to the PM590-ETH?
A: ABB provides a project migration utility within Automation Builder 2.x that converts CoDeSys 2.3-based projects. Structured text, ladder diagram, and function block diagram programs generally migrate with minimal manual intervention. TOPNLMS recommends performing a full offline simulation before live commissioning.

Q: Does the PM590-ETH support Modbus TCP without an additional communication module?
A: Yes. The integrated 10/100 Mbps Ethernet port on the PM590-ETH supports Modbus TCP natively, functioning as both a Modbus TCP server and client. No CM577-ETH or additional Ethernet module is required for standard Modbus TCP communication.

Q: What is the physical installation space requirement compared to my current CPU?
A: The PM590-ETH occupies the same DIN rail slot width as the PM554, PM564, PM572, and PM581 CPUs. Control cabinet layout, cable management, and adjacent module spacing do not need to be modified.

Q: Can the PM590-ETH communicate with my existing ABB ACS800 drives via PROFIBUS DP?
A: Yes, when used in conjunction with the CM572-DP PROFIBUS DP master module. The PM590-ETH supports the CM572-DP in the same backplane configuration as previous AC500 CPUs, maintaining drive communication without changes to the PROFIBUS network topology or GSD file configuration.

Q: What programming cable is required for initial configuration?
A: The PM590-ETH is programmed via its onboard Ethernet port using a standard RJ45 patch cable connected to a PC running Automation Builder 2.x. No proprietary programming cable is required, unlike some legacy AC500 variants that required a dedicated serial programming adapter.

Warranty Assurance

Every PM590-ETH 1SAP150000R0271 unit shipped by TOPNLMS is covered by a 12-month replacement warranty from the date of delivery. Prior to dispatch, each unit undergoes a pre-shipment functional verification that includes power-on testing, Ethernet port connectivity confirmation, and firmware version validation. Units that do not pass verification are not shipped.

In the event of a warranty claim, TOPNLMS provides a direct replacement unit — not a repair-and-return service — to minimize the impact on your production schedule. Warranty replacement requests are processed within 2 business days of claim confirmation, with expedited handling available for critical production environments. Our after-sales response team is reachable via email and phone for technical pre-sales consultation, installation guidance, and post-delivery support.

Stock availability is maintained for the PM590-ETH 1SAP150000R0271 to support both planned procurement and emergency replacement scenarios. Orders placed before 3:00 PM CST on business days are typically dispatched the same day. International shipping to Southeast Asia, the Middle East, and Europe is supported with full customs documentation provided upon request.

For volume procurement, OEM partnerships, or consignment stock arrangements, please contact our industrial sales team directly to discuss pricing, lead times, and technical support agreements.