Description
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
- Install Yokogawa Vnet drivers (from CENTUM CS 3000/VP media).
- 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
| Segment | Description |
|---|---|
| VF701 | Dual-port PCI Vnet card |
| -S2 | Style 2 (improved hardware revision) |
| AS-S9961DE-01 | Yokogawa internal assembly code |
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
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