ABB DSDP140B 57160001-ACX – High-Performance Dual Port Communication Processor for Industrial Automation

If you’re upgrading or maintaining an ABB AC 800M control system, the DSDP140B (57160001-ACX) is one of those components that quietly keeps everything running smoothly. It’s a dual-port communication processor designed to handle data exchange between controllers and field devices—especially in environments where uptime and protocol flexibility matter.

From my experience, this module tends to show up in power plants, water treatment facilities, and large-scale manufacturing lines where redundant communication paths are non-negotiable. One thing I appreciate is how seamlessly it integrates with existing Profibus DP networks while still supporting point-to-point serial links.

Key Features

• Dual communication ports – Supports both Profibus DP and RS-485 serial communication, allowing simultaneous connectivity to different device types.
• High-speed data transfer – Operates at up to 12 Mbps on the Profibus port, which helps reduce latency in time-critical applications.
• Redundancy-ready – Can be configured in redundant pairs to maintain communication during failover scenarios, typically used in mission-critical processes.
• Hot-swappable design – Module can be replaced without powering down the rack, minimizing downtime during maintenance.
• Integrated diagnostics – LED indicators provide real-time status feedback; error logging accessible via Control Builder M or Asset Vision.

Technical Specifications

Application Fields

This module is commonly found in process automation setups where distributed I/O systems need reliable fieldbus communication. In many cases, it’s deployed in:

• Energy generation – Used in turbine control networks to interface with valve positioners and motor operators.
• Water & wastewater – Connects remote pump stations via Profibus to central SCADA systems.
• Chemical processing – Handles communication with safety shutdown systems and batch control valves.
• Mining and metals – Often seen in conveyor belt synchronization and crusher control loops.

Advantages & Value

Procurement teams tend to favor this model not because it’s flashy, but because it reduces long-term risk. Its compatibility with legacy AC 800M systems means you’re not forced into a full controller upgrade just to improve comms reliability. The redundancy support also cuts down on unplanned outages—something plant managers usually notice after a few months of operation.

Another practical benefit: firmware updates can be pushed remotely through the engineering station, so field techs don’t have to climb into cabinets every time there’s a patch. It seems to hold up well under electromagnetic interference too, especially when installed alongside VFDs.

Installation & Maintenance

You’ll want to install this in a standard ABB I/O cabinet with adequate ventilation—especially if ambient temps regularly exceed 40°C. Make sure the grounding busbar is properly bonded; we’ve seen noise issues pop up when that’s overlooked.

For wiring, use shielded twisted-pair cable for both Profibus and RS-485 lines, and terminate resistors correctly (typically 220 Ω at each end). Avoid routing signal cables parallel to power lines—cross them at 90° if needed.

Routine checks should include verifying link status LEDs monthly and reviewing error counters in the control system. Calibration isn’t required per se, but syncing firmware versions across redundant units every six months helps prevent mismatch errors.

Quality & Certifications

The DSDP140B carries CE, UL, and ATEX certifications (for use in hazardous areas when properly enclosed), and complies with IEC 61131 and ISO 9001 standards. RoHS compliance confirms no restricted heavy metals are used in production.

It comes with a 365-day warranty—which covers defects in materials and workmanship under normal operating conditions. We typically see replacement turnaround within a week if it’s in stock, or no more than four weeks if ordered from Europe. Payment is 50% upfront, with the balance due before shipment. We ship via FedEx, UPS, or DHL depending on destination and urgency.