Yokogawa VI702 S1 – Vnet/IP Communication Interface Module | CENTUM VP / CS 3000 Platform
Engineering Background
The Yokogawa VI702 S1 is a Vnet/IP-based communication interface module engineered for integration within Yokogawa’s CENTUM VP and CS 3000 Distributed Control System (DCS) platforms. Designed to meet the demanding requirements of continuous-process industries — including oil & gas, petrochemical, power generation, and pulp & paper — this module serves as a critical node in real-time plant-wide communication architectures.
Product Positioning
The VI702 S1 is positioned as a high-reliability, deterministic communication backbone component for large-scale DCS installations. It enables seamless data exchange between field control stations (FCS), human interface stations (HIS), and engineering workstations (EWS) over the Vnet/IP redundant Ethernet network. Procurement engineers sourcing replacement or expansion modules for existing CENTUM VP / CS 3000 systems will find the VI702 S1 a direct OEM-compatible solution.
Complete Technical Specifications
- Manufacturer: Yokogawa Electric Corporation
- Part Number / SKU: VI702 S1
- Module Type: Vnet/IP Communication Interface Module
- Compatible Platform: CENTUM VP, CENTUM CS 3000
- Communication Protocol: Vnet/IP (Yokogawa proprietary, IEEE 802.3 Ethernet-based)
- Network Topology: Dual-redundant ring / star (platform-dependent)
- Data Transfer Rate: 100 Mbps (Fast Ethernet)
- Connector Type: RJ-45 (standard Ethernet)
- Power Supply: Supplied via backplane (FCS/IOM chassis)
- Operating Temperature: 0°C to +55°C
- Storage Temperature: -25°C to +70°C
- Relative Humidity: 5% to 95% RH (non-condensing)
- Dimensions (W × H × D): Standard CENTUM VP module form factor
- Weight: Approx. 200 g
- Certifications: CE, UL (platform-level certification)
- Country of Origin: Japan
- Firmware: Managed via CENTUM VP Engineering Environment (ENG)
Proven Application Environments
- Oil & Gas: Upstream SCADA integration, refinery DCS backbone expansion, offshore platform control systems
- Petrochemical & Chemical: Continuous reactor monitoring, batch process communication, safety-instrumented system (SIS) data exchange
- Power Generation: Turbine control network integration, boiler management DCS communication nodes
- Pulp & Paper / Pharmaceuticals: Multi-station process data aggregation, FDA 21 CFR Part 11-compliant data logging architectures
- Water & Wastewater: Remote FCS-to-HIS communication in distributed treatment facilities
Engineering Advantages
- Deterministic Latency: Vnet/IP protocol guarantees real-time, cycle-synchronous data delivery critical for closed-loop control
- Dual Redundancy: Supports hot-standby redundant network paths — zero single-point-of-failure exposure
- Plug-and-Play Replacement: Direct drop-in replacement for existing VI702 S1 slots; no re-engineering of FCS configuration required
- Backward Compatibility: Fully interoperable with CS 3000 R3.x and CENTUM VP R4.x–R6.x environments
- Minimal Maintenance Overhead: Firmware managed centrally via ENG workstation; no on-module configuration required
- Long Service Life: Designed for 10+ year continuous operation in industrial environments
System Architecture & Signal Flow
Within a CENTUM VP architecture, the VI702 S1 is installed in the Field Control Station (FCS) chassis. It interfaces the FCS CPU with the plant-wide Vnet/IP Ethernet ring, enabling:
- Real-time process variable (PV) and setpoint (SP) data exchange with HIS operator stations
- Engineering parameter download/upload between EWS and FCS
- Alarm and event data propagation to historian and SCADA layers
- Redundant path failover in <1 ms (platform-dependent) for uninterrupted control
Signal flow: Field Instruments → I/O Modules → FCS CPU → VI702 S1 → Vnet/IP Ring → HIS / EWS / Historian
Sourcing & Quality Verification
- Stock Origin: Sourced from decommissioned plant upgrades, authorized distributors, and verified OEM channels
- Inspection Protocol: Each unit undergoes visual inspection, firmware version verification, and functional bench-test prior to shipment
- Condition: New (sealed OEM) or Refurbished-Tested (clearly stated per listing)
- Traceability: Batch records and serial number documentation available upon request for critical-infrastructure procurement
- Warranty: 12-month operational warranty against manufacturing defects (terms apply)
Procurement Process
- Step 1 – Inquiry: Submit your RFQ with required quantity, delivery timeline, and destination via support@konmask.com or WhatsApp +0086 19859288691
- Step 2 – Quotation: Receive itemized quotation with unit price, lead time, and shipping options within 24 business hours
- Step 3 – Order Confirmation: Confirm PO; proforma invoice issued for payment processing
- Step 4 – Quality Check & Dispatch: Pre-shipment inspection completed; tracking number provided within 48 hours of payment clearance
- Step 5 – Delivery & Support: EXW / CIF / DDP terms available; post-delivery technical support included
Technical FAQ
- Q: Is the VI702 S1 compatible with CENTUM VP R6.09 and later?
- A: Compatibility depends on the specific FCS hardware generation. Please provide your FCS model and current software revision when submitting your RFQ for confirmation.
- Q: Can the VI702 S1 be used in a non-redundant Vnet/IP configuration?
- A: Yes. The module supports both single and dual-redundant Vnet/IP network configurations as defined in the CENTUM VP system engineering settings.
- Q: What is the lead time for in-stock units?
- A: In-stock units typically ship within 3–5 business days. Lead time for sourced units is 2–4 weeks depending on origin and quantity.
- Q: Do you provide a Certificate of Conformance (CoC) or test report?
- A: Yes. CoC and functional test reports are available upon request for all refurbished-tested units.
- Q: Can you supply multiple units for a plant-wide DCS upgrade?
- A: Yes. Volume procurement inquiries are welcome. Contact us for project-based pricing and phased delivery scheduling.
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