USB 2.0 to RS422/485 Adapter ROLINE 12.02.1004

ROLINE USB 2.0 to RS422/485 Adapter ROLINE 12.02.1004 converts a USB port into an isolated RS422/RS485 serial interface for reliable connection of serial devices to a PC. The adapter supports asynchronous serial communication, offers 3000 VDC optical isolation and is designed for DIN rail mounting. It includes a 5‑pin terminal block and a Mini USB type B connector, and comes with a USB cable, driver CD and manual.

Advantages

The adapter provides optical isolation to protect equipment and reduce interference, supports data transfer rates up to 115 Kbit/s and offers 15 KV ESD protection plus surge protection for RS‑422/485 signals. DIP switches allow configuring terminal resistance and echo mode, while status LEDs indicate link and activity. Power is supplied via the Mini USB type B connector and the unit is compatible with USB 2.0/1.1/1.0 and a range of Windows operating systems.

Suitable for

• Connecting RS422 or RS485 industrial devices to a PC via USB
• DIN rail installations in control cabinets and automation racks
• Applications requiring electrical isolation between PC and serial equipment
• Environments where ESD and surge protection are needed

Key specifications

• Model: ROLINE 12.02.1004
• Interface: USB 2.0 (compatible with USB 1.1 / 1.0)
• Serial modes: RS‑422 / RS‑485, asynchronous serial communication
• Isolation: 3000 VDC (optical)
• Data rate: up to 115 Kbit/s
• Connectors: 5‑pin terminal block (TX+, TX-, RX+, RX-, SGND), 1× Mini USB type B
• Protection: 15 KV ESD protection on signals, RS‑422/485 surge protection
• Settings: Terminal resistance and Echo mode via DIP switches
• Indicators: Status LEDs
• Mounting: DIN rail
• Power: via Mini USB type B (54 mA)
• Contents: Converter, USB cable, driver CD, manual

How to use

Mount the adapter on a DIN rail and connect the PC using the supplied Mini USB type B cable. Install the appropriate driver from the included CD or download the up‑to‑date driver for your Windows version. Wire the serial device to the 5‑pin terminal block following the signal labeling (TX+, TX-, RX+, RX-, SGND). Configure terminal resistance and Echo mode with the DIP switches as required by the connected device and set the serial parameters (baud rate up to 115 Kbit/s, parity, data bits, stop bits) in the host application.

Recommendations

For reliable communication in industrial environments, keep USB cable runs under recommended lengths, ensure correct wiring of differential pairs, and verify DIP switch settings for line termination and echo control. Use the provided surge and ESD protection features to reduce risk in electrically noisy installations.