Key Features

1. Hardware Specifications

• Interface: Standard 32-bit PCI (5V, 33/66 MHz)
• Ports: 2× RJ45 (10/100 Mbps, auto-negotiation)
• Chipset: Yokogawa-proprietary ASIC for Vnet protocol
• Style: S2 (hardware revision with improved reliability)
• Part Marking: AS-S9961DE-01 (manufacturing code)

2. Communication & Performance

• Protocols:
  • Vnet (Yokogawa’s real-time control bus, ≤1 ms cycle time)
  • Standard TCP/IP (for non-real-time traffic)
• Deterministic Latency: <100 µs (Vnet mode)
• Jumbo Frames: Not supported (legacy PCI limitation)

3. Compatibility

• Systems:
  • CENTUM CS 3000 (R3.x to R4.x)
  • CENTUM VP (early versions, verify firmware support)
• OS Support:
  • Windows XP/7 (32-bit only, with Yokogawa drivers)
  • Yokogawa HIS (requires legacy OS support)

4. Redundancy & Diagnostics

• Dual-Port Failover: Automatic switchover if primary link fails
• LED Indicators: Link/Activity (per port) + system status
• Hot-Swappable: Not supported (standard PCI limitation)

Installation & Configuration

1. Hardware Setup

• Insert into standard PCI slot (5V, 32-bit).
• Connect ports to Vnet hubs/switches (e.g., YEW-1100) via CAT5e cables.

2. Software Setup

1. Install Yokogawa Vnet drivers (from CENTUM CS 3000/VP media).
2. Configure in CENTUM Engineering Studio:
   • Assign Vnet station numbers (e.g., FCS/HIS addressing).
   • Set real-time priority for control traffic.

3. Network Best Practices

• Segregation: Dedicate Vnet to control traffic only.
• Cabling: Use shielded twisted-pair (STP) for noise immunity.

Part Number Breakdown

Note:

• Legacy System Requirement: For newer systems, Yokogawa recommends VF702 (PCIe) or VF711 (10Gbps).
• OS Limitation: Does not support 64-bit OS or Windows 10.

Troubleshooting

• No Link: Verify PCI slot compatibility (5V only) and driver installation.
• Latency Issues: Check for network collisions or faulty termination.
• Legacy Systems: CENTUM VP R6.x+ may require firmware updates.

SKU: YOKO-VF701S2