F3LC11-1F | Yokogawa | Personal Computer Link Module

Yokogawa F3LC11‑1F Personal Computer Link Module

Configured for RS‑232‑C serial communication in FA‑MID/FA‑MIC control networks, the Yokogawa F3LC11‑1F (F3LC11 PC link module) provides direct half‑duplex start‑stop synchronized data exchange between host computers and PLC processors. The module executes fixed‑speed serial transmission, parity‑based error detection, and non‑isolated port behavior through a D‑sub 9‑pin interface.

Hardware Specifications

4‑20 mA HART Loop Protocol & Channel‑Isolation Behavior

As a Yokogawa communication module, the F3LC11‑1F aligns with process‑control wiring practices:

• 4‑20 mA HART loop protocol — grounding and shielding discipline mirrors hybrid analog/digital loop installations.
• FOUNDATION Fieldbus / Profibus PA connectivity — routing practices follow fieldbus‑grade separation of signal and power conductors.
• Channel‑to‑channel isolation — non‑isolated RS‑232 ports require external isolation when used near noisy industrial loads.
• Cold junction compensation (CJC) — wiring discipline parallels temperature‑sensitive signal routing used in Yokogawa analog modules.

Frequently Asked Questions (FAQ)

Q: Can the F3LC11‑1F be hot‑swapped? A: No. Removing or inserting RS‑232 modules on an energized base can cause transient serial‑link resets.

Q: Does the module support hardware flow control? A: RS and ER control lines remain asserted; detailed flow‑control behavior depends on the host device.

Q: Is the port electrically isolated? A: No. The single RS‑232 port is non‑isolated and requires external isolation if used in high‑noise environments.

Field Installation Guidelines

• Maintain shield continuity on RS‑232 cabling; bond drain wires at designated grounding points only.
• Keep serial cables away from high‑current conductors to reduce induced noise.
• Verify D‑sub connector seating before energizing to avoid intermittent communication faults.
• Avoid exceeding the 15 m maximum transmission distance to maintain signal integrity.
• Ensure proper strain relief on M2.6 screw‑mounted connectors to prevent mechanical stress on the port.
• Use external isolation devices when connecting to equipment with differing ground potentials.