Description

Yokogawa VI702 Vnet/IP Interface Card

Configured for PCI Express to Vnet/IP communication execution in Yokogawa Vnet/IP control networks, the Yokogawa VI702 (VI702 interface card) provides direct physical/electrical execution. The module installs into a PCI Express slot and operates as a dedicated 1 Gbps full-duplex communication interface between PC/AT compatible computers and Vnet/IP process control infrastructure.

Hardware Specifications

Parameter	Specification
Model	VI702
Brand	Yokogawa
Origin	Japan
Product Type	Vnet/IP Interface Cards
Communication Speed	1 Gbps Full Duplex
Network Standard	1000BASE-T
Transmission Medium	CAT5e UTP cable
Connector Type	RJ45
Maximum Transmission Distance	100 m
PCI Express Compatibility	PCI Express CEM Specification 1.0a x1
PCIe Signaling Rate	2.5 GT/s
Supported Slot Size	PCI Express x1 to x16
PCI Slot Compatibility	Not supported
Power Supply Voltage	3.3 V +/- 9 %
Current Consumption	Max. 2.5 A
Weight	Approx. 0.18 kg
Status Indicators	RDY, RCV, SND LEDs

Channel Isolation and Vnet/IP Communication Handling

The VI702 interface card operates as a dedicated communication endpoint for deterministic Vnet/IP data transfer across PCI Express hardware platforms. The module supports 1000BASE-T Ethernet transmission using CAT5e UTP cabling with RJ45 physical termination.

Within Yokogawa DCS environments, the module handles direct packet exchange between the host workstation and the Vnet/IP control bus. Signal activity is indicated through dedicated RCV and SND hardware LEDs, allowing local verification of bus traffic status during commissioning and maintenance activity.

The PCI Express implementation conforms to PCI Express CEM Specification 1.0a x1 operation at 2.5 GT/s signaling rates. Mechanical installation compatibility extends from x1 through x16 PCI Express slots without PCI legacy slot support.

Frequently Asked Questions

Q: Can the VI702 be installed into a conventional PCI slot?
A: No. The module supports only PCI Express slot architecture from x1 through x16 mechanical configurations. Legacy PCI slots are not electrically compatible.

Q: What cable specification is required for Vnet/IP communication?
A: The interface requires CAT5e UTP cabling operating under 1000BASE-T Ethernet specifications with a maximum segment distance of 100 m between the VI702 and the Layer 2 switch.

Q: What hardware indicators are available on the front assembly?
A: The module includes RDY, RCV, and SND LED indicators for diagnostic status, receive activity, and transmit activity monitoring.

Field Installation Guidelines

• Verify PCI Express slot voltage compatibility before module insertion.
• Do not install or remove the module while the host computer is energized unless the platform explicitly supports controlled hot-swap PCIe maintenance procedures.
• Maintain CAT5e cable bend radius and separation from high-voltage motor feeder wiring to reduce electromagnetic coupling.
• Use shielded industrial Ethernet routing practices when the module is installed near variable frequency drives or high-current switching equipment.
• Confirm Layer 2 switch configuration supports 1000BASE-T full-duplex communication before network commissioning.
• Tighten RJ45 cable retention points to prevent intermittent packet loss caused by vibration or cable strain.

Specifications

• Brand: Yokogawa

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems