ATC-840 USB to RS-422 Converter
ATC-840 USB to RS-422 Converter
Industrial-grade USB-to-RS422 converter designed for long-distance, noise-resistant serial communication. Shielded twisted-pair cable, 15 kV ESD protection, and full duplex support make it ideal for automation, manufacturing, and industrial control systems.
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ATC-840 USB to RS-422 Converter – Industrial Full-Duplex Serial Communication Adapter
The ATC-840 USB to RS-422 Converter provides reliable and noise-immune communication between modern computers and RS-422-enabled industrial devices. Equipped with a shielded twisted-pair (STP) cable, PVC flame-resistant jacket (UL94V-0), and 15 kV ESD protection, it is built for harsh industrial environments requiring stable and long-distance serial communication.
Supporting full duplex RS-422 over a 1.2-meter shielded cable, the ATC-840 enables data connectivity with up to 32 RS-422 devices. The converter offers plug-and-play installation on modern Windows and Linux systems, with automatic send/receive switching and LED indicators for real-time data monitoring.
This compact and robust converter is suitable for field engineers, automation technicians, and industrial communication systems requiring dependable RS-422 connectivity.
Key Features
USB Type-A male to DB9 male RS-422 interface
Full duplex RS-422 communication (4-wire)
Supports up to 32 RS-422 devices simultaneously
Operating temperature: -20°C to +70°C
1.2-meter shielded twisted-pair cable for noise immunity
Flame-resistant PVC insulation (UL94V-0)
15 kV ESD protection for device safety
Automatic send/receive switching
LED indicators for TX/RX activity
Plug-and-play installation on Windows and Linux
Designed for industrial data communication
Technical Specifications
| Parameter | Value |
|---|---|
| Model | ATC-840 |
| Interface Type | USB to RS-422 |
| Connectors | USB Type-A Male → DB9 Male |
| Communication | Full Duplex RS-422 |
| Supported Devices | Up to 32 RS422 devices |
| Cable Length | 1.2 meters |
| Cable Type | Shielded twisted pair |
| Conductor Material | Copper |
| Wire Gauge | 24 AWG |
| No. of Conductors | 4 |
| Shielding | Yes, shielded for EMI immunity |
| Jacket Material | PVC (UL94V-0 flame-resistant) |
| Voltage Rating | 300V |
| Operating Temperature | -20°C to +70°C |
| Color | Black |
| Outer Diameter | 5.0 mm |
| OS Support | Windows XP/7/10, Linux |
| Power | USB powered |
| Enclosure Material | ABS |
| Warranty | 1 Year |
Applications
Industrial automation systems
RS-422 PLC and controller communication
Manufacturing machine interfaces
Serial device communication in laboratories
Long-distance industrial data links
Industrial control rooms and monitoring systems
What’s in the Box
1× ATC-840 USB to RS-422 Converter
1× Quick installation/user guide
FAQ
1) How do I connect the ATC-840 to my device?
Connect the USB Type-A connector to your PC and the DB9 male connector to the RS-422 device. For DB9 female applications, an adapter can be provided.
2) Does the ATC-840 require drivers?
For modern Windows and Linux systems, no external driver installation is required. It operates as a virtual COM port.
3) How many devices can it support?
Supports up to 32 RS-422 devices on a multi-drop configuration.
4) Is it suitable for industrial applications?
Yes. With shielded cable, flame-resistant PVC, and 15 kV ESD protection, it is ideal for industrial, automation, and manufacturing environments.
5) What is the supported operating temperature?
The converter supports -20°C to +70°C, suitable for harsh conditions.
6) Does it support full duplex communication?
Yes, ATC-840 supports full duplex RS-422 (4-wire communication).