It is a RS-485 bus-division hub designed for RS-485 system used in complicated electromagnetic environments. It supports data communication rate up to 115.2KBPS. Photoelectric isolation technique is introduced to the RS-485 interface to prevent converter and device from lightning and surge voltage for ensuring the safe and reliable data communication. The built-in photoelectric isolator (an isolation voltage as high as 2.5KVrms) and 600W surge suppressor can effectively suppress lightning and ESD and the grounding interference with each RS-485 line. It uses external switching power supply for safety and reliability and is ideal for outdoor engineering applications. The built-in discrimination circuit can automatically sense the direction of data flow and switch the enable control circuit to ensure the automatic switch of transmit and receive in RS-485 mode.

2.feature

3.specific

1.Interface Protocol           EIA RS-2332/485

2.Interface Number           1x RS-232,1xRS-485, 4x RS-485,lower position controller interfaces.

3.RS-232 signal                TxD, RxD, GND

   RS-485 signal                D+, D-, GND

4. Check                           None, Even, Odd, Space, Mark

5.Data Bit                         5bit, 6bit, 7bit, 8bit

6.Stop Bit                         1bit, 1.5bit, 2bit

7.Baud Rate                     300bps~115200bps

8.Direction Control           RS-485 adopts data flow to automatic control technology

9.Transmission Media      twisted-pair shielded cable or UTP 485 dedicated line

10.Load Capacity             RS-485: 32-node ( can be customized 128 nodes)

11. Port Protection            2KVAC isolation protection

                                         3-level of ESD protection

                                         2-level of electrostatic radiation protection

12.Transmission Distance         RS-485:1200m, RS-232 : no more than 5m