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Application Scenarios
A automotive-component assembly line was running into synchronization problems after a robot cell, a CNC station and the line PLC were added from three different suppliers. The original architecture relied on discrete I/O handshakes and several point-to-point serial links, so part-presence and cycle-complete information arrived late or was lost during tool changes. The integrator installed the F3LX02-2N in the FA-M3 main unit at each controller location, joined the nodes on a shared FL-net (OPCN-2) network and allocated cyclic link data for real-time status plus message buffers for alarms and recipe transfers. The result was a single transparent data path: the line PLC could see robot and CNC status in the same scan context, while event messages carried tool-change and fault information without affecting the cyclic refresh. Line stoppages caused by ambiguous interlock states fell noticeably, and troubleshooting moved from tracing individual wires to reading network diagnostics.The same model suits semiconductor manufacturing cells, packaging and filling machines, material-handling systems and other mixed-vendor automation environments where deterministic sharing of status, setpoints and event data matters more than raw bandwidth alone.
Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | F3LX02-2N |
| Manufacturer | Yokogawa (横河电机) |
| Product Category | FL-net (OPCN-2) Interface / Communication Module |
| System Compatibility | Yokogawa FA-M3 / e-RT3 |
| Standard | FL-net (OPCN-2) Ver. 2.00 |
| Physical Interface | 10BASE-T / 100BASE-TX, RJ45 |
| Transmission Speed | 10 Mbps / 100 Mbps |
| Transmission Method | Baseband |
| Access Control | IEEE 802.3 (CSMA/CD) |
| Protocol Stack | UDP/IP, FA link, ICMP, ARP |
| Maximum Nodes | 254 (one module counts as one node) |
| Modules per Main Unit | Up to 6 (not installable in a sub-unit) |
| Link Data Capacity | 8192 points maximum per module (independently configurable) |
| Cyclic Transmission | Area 1: 512 words; Area 2: 8192 words |
| Message Transmission | 1024 bytes maximum |
| Current Consumption | 330 mA maximum |
| Dimensions / Weight | 28.9 (W) × 100 (H) × 83.2 (D) mm; approx. 100 g |
| Operating Temperature | 0 to +55 °C |
| Storage Temperature | -20 to +75 °C |
| Operating Humidity | 10 to 90 % RH, non-condensing |
| Indicators | RDY, LNK, COM, ERR |
Technical Principles and Innovative Values
- Innovation Point 1 — RRR high-speed delivery. RRR stands for Rapid Refresh and Reflection. The F3LX02-2N combines fast internal protocol handling with rapid data exchange between the interface module and the CPU module, shortening the delivery time from data transmission to recognition by the ladder application.
- Innovation Point 2 — Open, vendor-independent network. FL-net (OPCN-2) is an open FA network standard intended for communication among PLCs, robot controllers, CNC equipment and other FA controllers. The F3LX02-2N therefore supports mixed-vendor integration rather than locking the application into a proprietary link.
- Innovation Point 3 — Dual communication modes. Cyclic transmission refreshes each node’s data at fixed intervals, while message transmission handles event notifications. Real-time interlock status and less frequent alarm or recipe traffic can therefore share the same network without compromising refresh behavior.
- Innovation Point 4 — Managed media access. Network access is managed and controlled on a per-node basis, supporting predictable data transfer within a defined time frame. This is particularly valuable where controller actions depend on the latest state of remote equipment.
- Innovation Point 5 — Flexible link-point configuration. Each module independently supports up to 8192 link points, configurable as required. This allows the network designer to allocate bit-level status and word-level process data according to the actual application rather than being forced into a fixed split.
- Innovation Point 6 — Multi-layer linking capability. Up to six F3LX02-2N modules can be installed in an FA-M3 main unit. Multiple network layers or segregated communication zones can therefore be created without replacing the controller platform.
