Product Details

The Yokogawa VI702 serves as the high-speed communication gateway for modern CENTUM VP and CENTUM CS 3000 Distributed Control Systems (DCS). This PCI Express (PCIe) interface card connects Human Interface Stations (HIS) and Engineering Stations (ENG) directly to the Vnet/IP control bus. We provide this unit as 100% brand new and original in factory packaging to ensure mission-critical network reliability.

Product Overview

The VI702 replaces legacy PCI-based cards by utilizing the faster PCI Express x1 bus interface. It facilitates 1Gbps full-duplex communication, allowing operator stations to manage massive data flows from control units without latency. Designed for high-availability environments, the card supports redundant network architectures to prevent single points of failure in power plants, refineries, and chemical processing facilities. By offloading network stack processing to the specialized hardware on the VI702, the host PC maintains peak performance for HMI and engineering software applications.

Part Number Breakdown

Yokogawa VI702 often includes suffix codes that designate specific hardware revisions or regional standards:

• VI702-S1: Standard type for Vnet/IP communication using the PCIe interface.

• S9660DJ-01: Internal manufacturing or assembly reference code associated with the VI702 series.

Technical Specifications

Engineering Advantages

• Modern Hardware Compatibility: The PCIe x1 interface ensures compatibility with the latest generation of industrial workstations and servers, bypassing the limitations of obsolete PCI slots.

• Enhanced Signal Integrity: Digital signal processing on the VI702 eliminates data packet loss during high-congestion periods. This ensures that critical alarms and process variables reach the operator station with sub-millisecond precision.

• Redundant Network Support: Dual RJ45 ports allow for a physically redundant Vnet/IP configuration. The card automatically manages path switching, ensuring continuous communication even if a cable or network switch fails.

• Optimized Thermal Performance: The compact design improves airflow within the PC chassis, while the low current consumption (approx. 2.5 A) minimizes heat generation, extending the lifespan of both the card and the host workstation.

• G3 Environment Preparedness: Built to withstand industrial contamination, the VI702 maintains stable performance in environments where dust or humidity could compromise standard commercial network equipment.

FAQs

Can I replace a legacy VI701 card with the VI702?

The VI702 is the PCIe version of the VI701 (which uses standard PCI). While they perform the same communication role, the VI702 requires a PCI Express x1 slot. Verify your workstation’s motherboard slots before upgrading to ensure physical compatibility.

Does the VI702 support autonegotiation?

Yes. The card fully supports autonegotiation for 1000BASE-T standards. It automatically synchronizes with industrial Layer 2 switches to establish the most stable 1Gbps full-duplex link available.

Is any special software required for installation?

The VI702 operates within the Yokogawa CENTUM VP or CS 3000 software environment. You must install the corresponding Vnet/IP drivers provided with your Yokogawa DCS software package for the card to be recognized by the operating system.

What is the maximum cable distance supported?

The card supports a maximum distance of 100 meters between the VI702 and the nearest Layer 2 switch using CAT5e or better cabling. For distances beyond 100 meters, we recommend using fiber optic media converters.