The BPI‑452 interface converter is designed for:

• 🔄 Bidirectional electrical signal conversion between RS‑485 interfaces (four independent channels) and USB;
• ⚡ Operation in asynchronous data transfer mode, compatible with most industrial controllers and sensors;
• 🛡 Galvanic isolation between the industrial communication line and the PC, protecting equipment from potential differences and transient processes;
• ✅ Reliable data exchange between industrial devices and a PC without the need for a hardware COM port.

When connected to a PC, the device creates four independent virtual COM ports, allowing the use of standard software (SCADA systems, configurators, monitoring systems) without additional adaptation.

Main Functions

• 🔄 Mutual signal conversion RS‑485 (4 channels) ↔ USB;
• ⚡ Automatic data direction detection on each channel;
• 🛡 Galvanic isolation of interfaces, protecting the PC and equipment from surge voltages and leakage currents;
• 💻 Support for four virtual COM ports, compatible with software for hardware serial ports;
• 🔋 Powered via USB, no external power supply required.

Electrical and Functional Specifications

• ⭕ Number of RS‑485 channels: 4 independent channels
• ⭕ Interfaces:
  • USB 2.0 (compatible with USB 1.1/3.0)
  • RS‑485 (two‑wire connection, half‑duplex, 4 separate channels)
• ⭕ Communication mode: asynchronous
• ⭕ Galvanic isolation: between USB and each RS‑485 channel
• ⭕ Supply voltage: 5 V DC (from USB)
• ⭕ Data rate: up to 3 Mbit/s per channel
• ⭕ Virtual COM ports: 4 independent, automatic driver installation

Supported Operating Systems

• Windows: XP / Server 2003 / Vista / 7 / 8 / 8.1 / 10 / 11
• Linux: kernel versions 2.6.x / 3.x.x