RS232/485/422 to MM Fiber Converter, SC, Multimode

NTI ENVIROMUX-SER-2FOMMSC – Your Industrial RS232/485/422 to Multi‑Mode Fiber Converter

In large data centers, production halls, or campus‑wide installations, copper cables often fail due to electromagnetic interference, ground potential differences, or simply distance limitations.

The ENVIROMUX‑SER‑2FOMMSC from NTI solves this with light: a bidirectional, multifunctional Serial‑to‑Fiber converter that transforms RS232, half‑duplex RS485, or full‑duplex RS422 signals into a Multi‑Mode fiber link with SC connectors — up to 2 km of range without signal loss.

Completely plug‑and‑play thanks to automatic data direction control — no drivers, no configuration. Whether used to extend sensors for ENVIROMUX‑2D/5D/16D, as a protocol converter, or as an EMI‑immune bridge between buildings, this set of two converters makes serial communication resistant to interference, surges, and ground loops.

Example: In an industrial park near Munich, an ENVIROMUX‑16D is installed in the main building, while an RS485 humidity sensor sits 1.8 km away in an outdoor warehouse. Copper? Impossible. With the SER‑2FOMMSC over MM fiber (62.5 μm duplex SC), data transmits flawlessly — at 78 % RH, the system triggers dehumidification, preventing mold and product loss.

This converter’s technical design shines in every aspect: automatic data‑direction control detects input signals and switches Tx/Rx without flow‑control — true hot‑plug capability. The 8‑pin terminal block accommodates RS232/485/422 flexibly, while the SC duplex connector supports 50‑ or 62.5‑μm MM fiber. Integrated surge and ESD protection guard against lightning or switching transients.

The robust steel enclosure (91 × 126 × 22 mm) and wide operating temperature range of −40 °C to +85 °C qualify the converter for cabinets, masts, and dusty environments. Included in the set: two converters, two 12 VDC power supplies, and one 5 VDC power supply — ready for immediate use.

Real‑world case: A Hamburg port operator connects an ENVIROMUX‑5D in the control office to RS232 weight sensors 1.2 km away on the quay. Before installation: data errors caused by salt air and crane noise. After using the SER‑2FOMMSC: 100 % data reliability, accurate container weights, correct billing, disputes avoided.

Installation is effortless: connect serial devices to the terminal block, plug in the fiber, and power the unit — done. When combined with CATx, total cable length (local + remote) can reach 305 m. Mixed protocol operation is supported (e.g., RS232 on one end, RS485 on the other).

Another example: an automotive plant in Stuttgart extends an ENVIROMUX‑2D sensor by 1.5 km via fiber to a test station. The converter bridges RJ45 to fiber; the system alerts at temperature deviation — production stays on track. The ENVIROMUX‑SER‑2FOMMSC is the industrial fiber bodyguard for your serial communication — interference‑free, maintenance‑free, and future‑proof.

• RS232 / RS485 (half‑duplex) / RS422 (full‑duplex) → MM fiber (SC)
• 2 km range using 50 / 62.5 μm duplex fiber
• Automatic data direction control — no RTS/CTS required
• Plug‑and‑play, hot‑pluggable operation
• Integrated surge and ESD protection
• Set includes 2 converters + 2 × 12 VDC + 1 × 5 VDC power adapters
• Steel enclosure, operating −40 to +85 °C, CE / FCC / RoHS compliant
• Compact size: 91 × 126 × 22 mm

Application Areas with Real‑World Success Stories

The SER‑2FOMMSC connects serial communication over fiber:

• Industry 4.0: RS485 sensor 1.8 km away. Munich warehouse: humidity alarm → mold prevented.
• Port logistics: RS232 weighing cells on quay. Hamburg: 1.2 km fiber → 100 % data integrity.
• Data center campus: ENVIROMUX to remote rack. Frankfurt: 1.5 km → stable temperature monitoring.
• Renewable energy: RS422 wind sensor. North Sea platform: 800 m fiber → live performance data.
• Traffic systems: RS232 access control. Berlin tunnel: 2 km → secure entry logging.
• Oil & Gas: RS485 pressure measurement. Düsseldorf refinery: 1 km fiber → explosion‑safe operation.

The NTI ENVIROMUX‑SER‑2FOMMSC is your fiber‑optic solution for interference‑free serial communication. No EMI, no ground potential issues — just pure, reliable data over 2 km. Complete set with all accessories – ready to deploy.

Compatibility and Summary:

• Extends serial signals over multi‑mode fiber optic cabling
• Plug‑and‑play (hot‑pluggable)
• Operating temperature −40 °C ~ +85 °C
• Compatible with ENVIROMUX‑2D, ENVIROMUX‑5D, and ENVIROMUX‑16D
• Not compatible with E‑MICRO‑TRH(P), E‑MINI‑LXO, or E‑1W(P)