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Home>ABB>ABB PM591-2ETH 1SAP150100R0277 AC500 Dual-Ethernet CPU
ABB PM591-2ETH 1SAP150100R0277 AC500 Dual-Ethernet CPU

ABB PM591-2ETH 1SAP150100R0277 AC500 Dual-Ethernet CPU Item NO.: 2931401

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Product Name ABB PM591-2ETH 1SAP150100R0277 AC500 Dual-Ethernet CPU
Item NO. 2931401
Weight 0.1 kg = 0.2205 lb = 3.5274 oz
Category ABB
Brand ABB
Creation Time 2026-11-10

ABB AC500 · Dual Ethernet Controller

ABB PM591-2ETH 1SAP150100R0277 AC500 Dual-Ethernet CPU

Four-megabyte AC500 CPU with two Ethernet connections and a dedicated TB523-2ETH terminal-base requirement.

01

Model Overview

ABB PM591-2ETH 1SAP150100R0277 is an AC500 CPU with 4,096 kB program memory and two integrated Ethernet connections. Its minimum published instruction times are 0.002 µs for bit operations and 0.004 µs for both word and floating-point operations.

The model has a specific assembly boundary: ABB states that PM591-2ETH is used only with the dedicated TB523-2ETH terminal base. The dual-Ethernet suffix therefore affects both network planning and the physical base selection, not merely the product description.

A single configurable serial interface complements the two Ethernet ports. For replacement or expansion, preserve the role of each network, IP configuration, web and programming services, serial settings, terminal-base wiring and the full PLC project.

02

Technical Details

BrandABB
Complete modelPM591-2ETH 1SAP150100R0277
Controller familyAC500
Product typeDual-Ethernet PLC CPU
Program memory4,096 kB
Bit instruction time0.002 µs
Word instruction time0.004 µs
Floating-point time0.004 µs
Ethernet connections2 × RJ45
Serial interfaces1 × RS232/RS485 configurable
Required terminal baseTB523-2ETH only
Supply voltage24 V DC
Central I/O modulesUp to 10
Central digital I/OUp to 320
Central analog I/OUp to 160
WeightApproximately 0.137 kg
03

Dual-Network Assignment

Two Ethernet connectors are useful only when each one has a defined role, address plan and failure boundary.

Name each network

Document which PM591-2ETH port serves engineering, HMI, controller traffic or another approved role. Avoid ambiguous labels such as primary and spare without a design reference.

Separate address plans

Record IP, subnet, gateway, switch port and permitted services for both interfaces. Confirm that routing or bridging behavior matches the system architecture before connection.

Monitor both paths

Use link state, switch counters and application tests on each network independently. One healthy port can conceal a cable, address or service problem on the other.

04

TB523-2ETH Assembly Control

The dedicated base is part of the PM591-2ETH identity and deserves the same verification as the CPU label.

Confirm the base marking

Verify TB523-2ETH on the installed or supplied terminal base before mounting ABB PM591-2ETH. A similar AC500 base is not automatically acceptable.

Record base wiring

Photograph and label both Ethernet connections, the serial connection, 24 V supply and I/O extension before dismantling. Preserve shield and grounding details.

Commission from the center

Start with CPU and base diagnostics, then add networks, serial communication and I/O. This sequence isolates an assembly fault before external systems complicate the evidence.

05

Customer Questions

06

Sales Contact

Moore Automation

https://www.mvme.cn/

Moore Automation can keep the CPU and its dedicated terminal-base requirement visible throughout a PM591-2ETH request. The enquiry trail can cover model verification, documents, quoted scope, packing records and shipment status.

  • CPU and TB523-2ETH matching
  • Network-context information capture
  • Quoted-scope clarification
  • Shipment milestone updates
07

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