The YOKOGAWA VI701-S1, also cataloged as the VI701 Vnet/IP Interface Card, operates as a dedicated hardware component for high-speed deterministic control communication and workstation data transfer within CENTUM VP and CS3000 DCS platforms.
| Parameter | Specification |
|---|---|
| Model | VI701-S1 |
| Brand | Yokogawa Electric Corporation |
| Origin | Japan |
| Weight | 1.0 kg |
| Dimensions | 106.68 mm x 167.64 mm |
| Operating Temp | 0 deg C to +50 deg C |
| Power Consumption | Max 2.5 A (5 W via PCIe bus) |
| Interface Slot | PCI Express x1 slot |
| Communication Network | Vnet/IP (1 Gbps Full Duplex Gigabit Ethernet) |
| Connector Type | Dual RJ45 ports for CAT5e/CAT6 STP cabling |
| Transmission Distance | 100 m per segment (station to network switch) |
| Status Diagnostics | Front bracket LEDs (RDY, RCV, SND, Link/Activity) |
Process engineers install the VI701-S1 communication card into Human Interface Stations (HIS) and Engineering Stations (ENG) to establish low-latency Vnet/IP real-time network integration. Dual RJ45 Gigabit Ethernet ports execute dual-port network redundancy, maintaining uninterrupted deterministic communication across primary and secondary control buses during physical cable or switch outages. The hardware architecture utilizes hardware-level packet processing to achieve full-duplex 1 Gbps throughput without overloading workstation host CPU resources. Real-time LED indicators continuously display port activity, transmission status, and link health for diagnostic validation.
Q: How does the dual-port redundancy on the VI701-S1 prevent network communication interruption?
A: The card connects simultaneously to independent redundant Vnet/IP network switches via Bus 1 and Bus 2 ports. Internal controller logic monitors packet delivery in real time, automatically routing traffic through the secondary active path if a cable break or switch failure occurs on the primary bus.
Q: What physical system slot is required to install the VI701-S1 card inside an engineering workstation?
A: The card installs into a standard PCI Express x1 slot on the workstation motherboard. Power is drawn directly from the 5 VDC PCIe bus, consuming up to 5 W without requiring auxiliary internal power cables.
Q: What cable specifications ensure reliable 1 Gbps signal integrity across 100-meter segment runs?
A: Technicians must use CAT5e or CAT6 shielded twisted pair (STP) copper cabling with standard RJ45 connectors. The cable shielding must be grounded at the patch panel or network switch enclosure to protect high-frequency data streams against external electromagnetic interference.
Field technicians must switch off workstation host power and attach an ESD grounding wrist strap before opening the computer chassis. Insert the VI701-S1 card into a designated PCI Express x1 motherboard slot, pressing down firmly until the connector edge seats completely into the slot housing. Secure the metal mounting bracket to the computer frame using a retaining screw to establish structural grounding. Connect dual CAT6 STP cables to the primary and secondary RJ45 ports, ensuring the latch connectors click into place. Route network cables away from high-voltage AC lines, keeping environmental temperatures around the computer enclosure strictly between 0 deg C and +50 deg C.
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