ABB CM572-DP 1SAP170200R0001 System-Ready PROFIBUS-DP Module for AC500 Architecture

ABB CM572-DP 1SAP170200R0001 System-Ready PROFIBUS-DP Module for AC500 Architecture: Coordinated Control System Communication

The ABB CM572-DP (1SAP170200R0001) is a dedicated PROFIBUS-DP communication module engineered for seamless integration within the ABB AC500 programmable logic controller platform. Rather than functioning as a standalone peripheral, the CM572-DP occupies a critical position in the communication layer of a layered automation architecture — bridging the control layer, I/O layer, and field device layer through a standardized, high-speed PROFIBUS-DP network. Its role is to extend the AC500 CPU’s communication reach, enabling deterministic data exchange with distributed I/O stations, variable-speed drives, intelligent field instruments, and remote terminal units across complex industrial installations.

In a fully integrated AC500 control system, the CM572-DP plugs directly into the CPU module’s communication slot — compatible with AC500 CPUs such as the PM571, PM572, PM573, PM581, PM582, PM583, PM591, and PM592 — and operates as a PROFIBUS-DP master or slave, depending on the system topology. This flexibility allows engineers to design both centralized and distributed control architectures without requiring additional gateway hardware, reducing panel footprint and simplifying the overall system bill of materials.

The module’s Contextual Integration capability means it is not merely a protocol converter but an active participant in the AC500’s system-level data model. Process values, diagnostic flags, and communication status registers are mapped directly into the CPU’s memory space, making them immediately accessible to the application program running on Automation Builder — ABB’s integrated engineering software environment. This tight coupling between the communication layer and the control layer eliminates latency introduced by external gateways and ensures that field-level events are reflected in the control logic within a single scan cycle.

From a system architecture perspective, the CM572-DP supports up to 125 PROFIBUS-DP slave nodes per segment, with a maximum data transfer rate of 12 Mbit/s. This bandwidth is sufficient to sustain real-time communication with high-density I/O expansions such as the ABB TU515, TU516, and TU531 terminal units, as well as third-party PROFIBUS-DP slaves including frequency inverters, servo drives, and smart transmitters. When combined with the AC500’s modular I/O system — including digital input modules (DI524, DI572), digital output modules (DO524, DO572), and analog I/O modules (AI523, AO523) — the CM572-DP enables a fully coordinated signal flow from the sensor level through to the supervisory control layer.

Redundancy is a key consideration in mission-critical applications, and the CM572-DP supports hot-standby redundancy configurations when paired with redundant AC500 CPU pairs. In such architectures, the active CPU maintains the PROFIBUS-DP master role while the standby CPU mirrors the communication state, ensuring bumpless switchover in the event of a CPU fault. This capability is particularly valuable in continuous process industries — such as petrochemical refining, power generation, and water treatment — where unplanned downtime carries significant operational and safety consequences.

Installation and commissioning of the CM572-DP follow ABB’s standard AC500 engineering workflow. The module is configured entirely within Automation Builder using the integrated PROFIBUS-DP GSD file library, which provides pre-validated device descriptions for all supported slave types. This eliminates manual parameter entry and reduces the risk of configuration errors during initial commissioning. Diagnostic information — including bus status, slave communication errors, and module health — is accessible in real time through the Automation Builder diagnostic viewer, enabling rapid fault isolation during both commissioning and ongoing maintenance phases.

For long-term maintenance and spare parts management, the CM572-DP’s standardized form factor and ABB’s global supply chain ensure consistent availability. Each unit supplied by ZYPLC is covered by a 12-Month Warranty, providing assurance of functional integrity and protection against latent manufacturing defects. Units are tested prior to dispatch using ABB-compatible test rigs that verify PROFIBUS-DP master/slave communication, module identification, and electrical parameter compliance.

Architecture Specification Table

Coordinated Control System Design

The CM572-DP achieves its full value when considered as part of a coordinated AC500 control system rather than as an isolated component. A typical system architecture built around this module might include an AC500 CPU (such as the PM583 or PM591) mounted on a TB521 or TB541 CPU terminal base, with the CM572-DP occupying the dedicated communication module slot. Power is supplied to the CPU rack via an ABB CP-E series power supply unit, ensuring stable 24 VDC rail voltage across all connected modules.

On the PROFIBUS-DP network, the CM572-DP acts as master to a range of distributed I/O stations. ABB’s own S500 I/O modules — including the DC532 digital combination module, the DA501 analog input module, and the DC505-FBP PROFIBUS-DP I/O coupler — connect as slaves, extending the system’s I/O capacity across multiple control cabinets or remote marshalling panels. Third-party devices such as ABB ACS880 variable-speed drives and ACS580 general-purpose drives also support PROFIBUS-DP as a standard fieldbus option, allowing the CM572-DP to command speed references, read actual speed feedback, and monitor drive fault status — all within the same PROFIBUS-DP scan cycle.

At the human-machine interface layer, an ABB CP600 series HMI panel connects to the AC500 CPU via Ethernet, reading process variables that include PROFIBUS-DP field data aggregated by the CM572-DP. This multi-layer communication architecture — PROFIBUS-DP at the field level, Ethernet at the supervisory level — is a well-established pattern in process automation and discrete manufacturing, and the CM572-DP is specifically designed to operate reliably within it. For systems requiring SCADA connectivity, the AC500 CPU’s built-in Modbus TCP or IEC 60870-5-104 communication capabilities complement the CM572-DP’s PROFIBUS-DP role, creating a complete, multi-protocol communication stack within a single compact controller platform.

Application in Layered Automation Systems

The CM572-DP is deployed across a wide range of industrial sectors where PROFIBUS-DP remains the dominant fieldbus standard. In power generation and distribution applications, the module enables AC500 controllers to communicate with protection relays, bay controllers, and intelligent electronic devices (IEDs) that expose PROFIBUS-DP slave interfaces, supporting substation automation architectures compliant with IEC 61850 migration pathways. In water and wastewater treatment plants, the CM572-DP connects AC500 CPUs to distributed pump control panels, flow transmitters, and valve actuators spread across large geographic footprints, reducing cabling costs through PROFIBUS-DP’s multi-drop topology.

In petrochemical and refinery environments, the module’s wide operating temperature range and robust electrical isolation make it suitable for installation in control rooms adjacent to hazardous areas, where it manages communication with Ex-rated field instruments via PROFIBUS-DP PA segment couplers. Mining and minerals processing applications leverage the CM572-DP’s high node count to connect large numbers of conveyor drive controllers, crusher motor starters, and weighing system interfaces within a single PROFIBUS-DP segment, simplifying the network topology for sprawling plant layouts.

In packaging and discrete manufacturing lines, the CM572-DP supports high-speed PROFIBUS-DP communication at 12 Mbit/s, enabling tight synchronization between the AC500 CPU and servo drive systems, vision inspection units, and barcode readers that require deterministic cycle times. For metallurgical and steel processing plants, the module’s compatibility with ABB’s AC500-eCo and AC500-S safety variants allows integration into safety-rated control architectures where PROFIBUS-DP carries both standard process data and safety-relevant signals via PROFIsafe profiles.

Architecture Engineering FAQ

Q1: Is the CM572-DP 1SAP170200R0001 compatible with all AC500 CPU generations, and can it be used in a redundant CPU configuration?
The CM572-DP is compatible with the full range of AC500 CPUs from the PM571 entry-level unit through to the PM592 high-performance CPU, provided the CPU firmware is at a version that supports the CM572-DP GSD file revision. In redundant CPU configurations using paired PM591 or PM592 units on TB541 terminal bases, the CM572-DP installed in each CPU’s communication slot participates in the redundancy switchover mechanism managed by the AC500 firmware. The active CPU holds the PROFIBUS-DP master token; upon switchover, the standby CPU assumes the master role within the configured watchdog timeout period, maintaining field device communication continuity. Configuration is performed once in Automation Builder and applies symmetrically to both CPUs in the redundant pair.

Q2: What engineering steps are required to commission the CM572-DP in an existing AC500 system, and how is PROFIBUS-DP slave configuration managed?
Commissioning the CM572-DP in an existing AC500 system requires inserting the module into the CPU’s communication slot (with the CPU powered down), then opening the Automation Builder project and adding the CM572-DP to the hardware configuration tree. Slave devices are added by importing their GSD files into Automation Builder’s device library and dragging them onto the PROFIBUS-DP master branch. I/O data mapping is performed graphically within Automation Builder, with process variables automatically allocated to the CPU’s global data space. After downloading the updated configuration to the CPU, the PROFIBUS-DP network initializes automatically, and bus status can be verified in real time via the Automation Builder online diagnostic view. No external PROFIBUS-DP configuration tools are required.

Q3: What does the 12-Month Warranty cover for the CM572-DP 1SAP170200R0001, and what support is available for long-term spare parts supply?
The 12-Month Warranty provided by ZYPLC covers functional defects in the CM572-DP module arising from manufacturing faults or component failure under normal operating conditions. Warranty claims are processed through ZYPLC’s technical support team, with replacement units dispatched upon fault confirmation. For long-term spare parts planning, ZYPLC maintains stock of the CM572-DP and related AC500 communication modules to support maintenance contracts and emergency replacement requirements. Customers with multi-site installations or critical infrastructure applications are encouraged to contact ZYPLC to discuss framework supply agreements that guarantee stock availability and priority dispatch. For technical enquiries, contact ZYPLC at +86 19859288691 or plc.sales@zyplc.com.

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