Overview
The Moxa TCC-100I is an industrial RS-232 to RS-422/485 converter with 2 kV optical isolation, designed to extend RS-232 transmission distances while protecting equipment from ground loops and electrical surges in critical industrial environments. Supporting RS-422 full-duplex and RS-485 2-wire and 4-wire configurations, the TCC-100I is suited to applications where signal integrity and electrical isolation are essential. The compact metal housing supports both wall mounting and DIN-rail mounting (with optional kit).
Key Features
- RS-232 to RS-422 conversion with RTS/CTS flow control support
- RS-232 to 2-wire or 4-wire RS-485 conversion
- 2 kV optical isolation protection against ground loops and transients
- Automatic Data Direction Control (ADDC) for RS-485
- Supports baudrates from 50 bps to 921.6 kbps including non-standard rates
- Software-selectable RS-485 termination: N/A, 120 Ω, 120 kΩ
- Plug-in terminal block for easy RS-422/485 wiring
- External terminal block power input (12–48 VDC)
- LED indicators for power, Tx, and Rx
- Wall mounting standard; DIN-rail mounting with optional kit
- Overload current protection
- 5-year warranty
Serial Interface
The TCC-100I provides two serial ports — one RS-232 (TxD, RxD, RTS, CTS, GND) and one RS-422/485 via terminal block. RS-422 mode supports full-duplex operation with optional RTS/CTS hardware flow control. RS-485 2-wire mode uses Data+/Data-/GND; 4-wire mode uses Tx+/Tx-/Rx+/Rx-/GND. Pull high/low resistors (1 kΩ / 150 kΩ) and three termination options (N/A, 120 Ω, 120 kΩ) are user-selectable. The 2 kV isolation is applied across the RS-232/RS-422/485 boundary.
Power & Environmental
Powered via terminal block at 12 to 48 VDC, drawing up to 144 mA (higher than the non-isolated model due to the isolation circuitry). The TCC-100I-T operates across the full wide-temperature range of -40 to 85°C, suitable for outdoor enclosures and harsh industrial environments. Ambient humidity tolerance is 5 to 95% non-condensing. The metal IP30 housing measures 67 x 100.4 x 22 mm and weighs 148 g.
Certifications
UL 60950-1, EN 55032/35, CISPR 32, FCC Part 15B Class A, CE. MTBF: 3,017,857 hours (Telcordia/GB).