The New Openbox YOKOGAWA VF702 STYLE S1 Control Bus Interface Card is a brand-new, unopened control bus interface card from Yokogawa Electric. It is mainly used in industrial automation systems to achieve high-performance connection between PCs and Vnet/IP networks. It supports integration with PC/AT compatible computers via PCI Express slots and features the following core characteristics and functions:
I. Core Functions
Network Connection and Communication
Seamlessly integrate PC/AT compatible computers into Yokogawa’s Vnet/IP industrial control network via a PCI Express x1 interface card.
Support high-performance communication with Yokogawa CENTUM VP or CENTUM CS controllers and Vnet field devices, enabling real-time data interaction.
Multi-device Connection Capability
Equipped with dual independent RS-485 ports, each port can connect up to 31 devices, with a total connection capacity of 62 devices per card, meeting the demands of large-scale industrial scenarios.
Redundancy and Diagnostic Support
Provide redundant communication paths to enhance system reliability; built-in diagnostic functions can monitor communication status in real time and quickly locate faults.

Technical Specifications
Interfaces and Connections
PCI Express Interface: Complies with the PCI Express CEM specification 1.0a x1, supports a signal transmission rate of 2.5 GT/s, and is compatible with x1 to x16 slots (does not support traditional PCI slots).
Network Connection: Utilizes 10BASE-2 standard coaxial cable (model YCB146), connected to the BNC interface via a T-connector, with a maximum transmission distance of 185 meters.
Indicators: Equipped with RCV (Receive) and SND (Send) indicators to visually display the communication status.
Electrical Parameters
Power Supply: Powered by 3.3V ±9%, with a maximum current consumption of 2.4A.
Physical Dimensions: Width 22mm × Height 126.5mm × Depth 193.54mm, weight approximately 0.15kg (excluding connectors).

Application scenarios
Industrial automation control: Connect PC with Yokogawa DCS system to achieve monitoring, configuration and data analysis.
Field device integration: Connect sensors, actuators and other Vnet devices through RS-485 port to build a distributed control system.
Redundant network design: Deploy dual-card redundancy in critical industrial processes to enhance system availability and fault tolerance.







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