Yokogawa DP97*B Industrial Network Interface for CENTUM Systems

Yokogawa DP97*B Industrial Network Interface for CENTUM Systems: Bridging Field Devices and Smart Factory Data Links

The Yokogawa DP97*B Display Processor Card is a precision-engineered industrial network interface module designed for seamless integration within Yokogawa’s CENTUM distributed control system (DCS) architecture. As manufacturing environments evolve toward fully connected smart factories, the DP97*B serves as a critical node in the industrial data chain — enabling reliable signal acquisition, protocol-level communication, and real-time data delivery between field instrumentation and supervisory control layers.

Engineered to operate within the demanding conditions of process automation, the DP97*B supports high-speed display processing for EJA-series field transmitters and CENTUM VP/CS 3000 controller platforms. Its role in the data flow begins at the field level, where pressure, differential pressure, and flow signals from Yokogawa EJA110E and EJA210E transmitters are captured and conditioned before being passed upstream through the CENTUM field control station (FCS) to the human-machine interface (HMI) and SCADA layers. This uninterrupted data path is the backbone of real-time process visibility and alarm management in modern industrial sites.

Network Communication Table

Connected Automation Data Flow

In a typical CENTUM-based smart factory deployment, the DP97*B operates as the display processing backbone within the field control station. Signal acquisition begins at the transmitter level — Yokogawa EJA530E and EJA440E pressure transmitters feed live process data into the FCS via HART or Foundation Fieldbus H1 protocol. The DP97*B processes this incoming display data and routes it through the CENTUM VP’s Vnet/IP Ethernet control network, ensuring that operators at the CENTUM VP HIS (Human Interface Station) receive accurate, low-latency process readings.

As data moves upstream, the Yokogawa STARDOM FCN/FCJ remote I/O controllers aggregate field signals from distributed plant areas and relay them back to the central DCS via Ethernet-based Vnet/IP. The DP97*B’s display processing capability ensures that these aggregated data streams are rendered correctly on operator consoles, supporting multi-loop monitoring across refinery, chemical, and power generation environments.

For facilities running parallel SCADA architectures, the DP97*B integrates with Yokogawa’s FAST/TOOLS SCADA platform through the CENTUM VP OPC-DA/UA gateway interface. This allows real-time tag data — including flow rates, pressure readings, and alarm states — to be published to the SCADA historian and made available for remote monitoring via web-based dashboards. The Yokogawa Exaquantum plant information management system (PIMS) further leverages this data for production reporting, energy management, and predictive maintenance analytics.

At the edge layer, Yokogawa’s MW100 data acquisition unit and the Darwin DA100 distributed data acquisition system can be networked alongside the CENTUM FCS to extend measurement coverage to auxiliary plant areas. The DP97*B’s role in maintaining display data integrity across these distributed nodes is essential for ensuring that alarm thresholds, setpoint deviations, and process excursions are immediately visible to control room operators — enabling rapid response and minimizing unplanned downtime.

Variable frequency drives (VFDs) and motor control centers connected to the CENTUM system via PROFIBUS DP or Modbus RTU gateways also benefit from the DP97*B’s processing capability, as drive status, speed references, and fault codes are translated into display-ready data for the HMI layer. This end-to-end connectivity — from field sensor to control room display — is what defines the DP97*B’s value in a fully integrated industrial network.

Solving Data Isolation in Industrial Sites

One of the most persistent challenges in legacy process plants is data isolation — the inability to consolidate information from instruments, controllers, and subsystems that speak different protocols. The Yokogawa DP97*B addresses this directly by operating within the CENTUM DCS framework, which natively supports BRAIN, HART, and Foundation Fieldbus H1 protocols, allowing field devices from multiple generations and vendors to be unified under a single control and monitoring architecture.

Plants that have historically operated with siloed control islands — separate PLCs managing individual process units, with no common data backbone — can leverage the CENTUM VP platform and the DP97*B to establish a unified data highway. By routing field device data through the CENTUM FCS and processing it via the DP97*B, operators gain a single-pane-of-glass view of plant operations, eliminating the need to manually reconcile data from disparate systems.

Remote monitoring and diagnostics are equally transformed. With the DP97*B processing display data in real time, CENTUM VP’s built-in diagnostic tools can detect card-level faults, communication errors, and signal anomalies without requiring physical inspection. Maintenance teams can access device health data remotely through the CENTUM VP engineering environment, reducing mean time to repair (MTTR) and supporting predictive maintenance strategies.

For plants undergoing digital transformation, the DP97*B provides a stable, proven foundation for incremental system expansion. New field devices, remote I/O modules, and edge gateways can be added to the CENTUM network without disrupting existing control loops, making it an ideal component for phased smart factory upgrades. Every unit is pre-tested before shipment, backed by a 12-month warranty, and supported by verified global inventory — ensuring that replacement and expansion projects proceed without supply chain delays.

Industrial Connectivity FAQ

Q1: What communication protocols does the Yokogawa DP97*B support within the CENTUM DCS?
The DP97*B operates within the CENTUM VP and CS 3000 backplane architecture, supporting BRAIN, HART, and Foundation Fieldbus H1 protocols at the field level. Upstream communication to SCADA and HMI systems is handled via Yokogawa’s Vnet/IP Ethernet control network, ensuring deterministic, low-latency data delivery across the plant network.

Q2: How does the DP97*B contribute to network stability in multi-loop DCS environments?
The DP97*B is designed for continuous operation in high-availability DCS environments. Its backplane bus interface ensures direct, noise-immune communication within the CENTUM FCS chassis, eliminating the signal degradation risks associated with external wiring. Redundant FCS configurations further enhance network stability by providing automatic failover in the event of a card-level fault.

Q3: Can the DP97*B be integrated with third-party SCADA or HMI systems?
Yes. Through the CENTUM VP OPC-DA/UA gateway, the DP97*B’s processed display data can be published to any OPC-compliant SCADA or HMI platform, including Wonderware, iFIX, and Ignition. This makes it compatible with hybrid automation architectures where Yokogawa DCS coexists with third-party supervisory systems.

Q4: What quality assurance and warranty coverage is provided with the DP97*B?
Every Yokogawa DP97*B unit is functionally tested prior to shipment to verify communication integrity, display processing performance, and backplane compatibility. A 12-month warranty is included, covering manufacturing defects and operational failures under normal industrial use conditions. Stock is maintained in verified inventory to support urgent replacement and project timelines.

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