YZ422 is an economical RS232-422 converter, which realizes the mutual conversion of RS232 and 422 interfaces. Using unique serial port theft power technology, no external power supply is required; data transmission rate is automatically adapted, with a rate of 300-115.2kbps; the maximum transmission distance is 1200 meters; it converts and transmits TXD, RXD, GND three-wire signals; the interface conversion is completely transparent, and everything is automatically completed to adapt to all software; standard RS232 serial port is applicable, and it is more suitable for single chip serial port; it has a unique external adjustable resistor, which is suitable for any number of nodes (<32); it is fully compatible with RS422 interface.
The YZ422 is a compact RS232‑to‑RS422 converter designed to translate serial data between RS232 and RS422 interfaces. It supports data rates from 300 kbps to 115.2 kbps and can transmit up to approximately 1200 m.
Installation uses a DB9‑to‑DB9 cable; a DB25‑to‑DB9 adapter is required for 25‑pin serial ports. Pin assignments are TXD (pin 2), RXD (pin 3) and GND (pin 5) on the RS232 side, and TX+, TX‑, RX+, RX‑ on pins 1‑4 of the RS422 side. The unit measures 61 mm × 33 mm × 17 mm and includes a warranty of one year repair and three years free service. This manual is written in Chinese.
| Data rate | 300‑115.2 kbps |
|---|---|
| Maximum transmission distance | up to 1200 m |
| Connector type | DB9‑to‑DB9 (optional DB25‑to‑DB9 adapter) |
| RS232 pinout | TXD = pin 2, RXD = pin 3, GND = pin 5 |
| RS422 pinout | TX+ = pin 1, TX‑ = pin 2, RX+ = pin 3, RX‑ = pin 4 |
| Physical dimensions | 61 mm × 33 mm × 17 mm |
| Warranty | 1 year repair, 3 years free service |
It supports data rates from 300 kbps up to 115.2 kbps.
The converter can transmit data up to about 1200 meters.
TXD is pin 2, RXD is pin 3, and GND is pin 5 on the DB9 connector.