System-S Serial RS232 to RS422 / RS485 Converter Adapter

- Conversion from RS232 to RS485 or RS422

- Supports automatic detection and manual switching of RS422 and RS485

- EIA-232 to EIA-485 specifications (with external power supply)

- Working method: Asynchronous full duplex, half duplex automatic selection, no jumper setting required.

- TTL

- Transmission media: Shielded twisted pair or lines

- Transfer speed: 300 - 115.3Kbs

- Working range: -25 ~ 70 degrees Celsius temperature, 0% ~ 95% relative humidity

- Transmission range: 1200 meters (RS-485 port); 5 meters (RS-232 connection)

- Pin assignment:

DB9 Female (Input)
1.Protected
2.Receive data : SIN (RXD)
3.Send data: SOUT (TXD)
4. Data Terminal Preparation: DTR
5.Signal Ground: GND
6. Data Preparation: DSR
7.Request to send: RTS
8.Remove sending: CTS
9.Rign Instructions: R1

DB9 Male (Output)
RS-422 Full Duplex---------------RS-485 Full Duplex
1.T/R +：Send (A+)----------------RS-485 (A+)
2.T/R -：Send (B-)------------------RS-485 (B-)
3.RXD +：Receive (A+)------------------Blank
4.RXD -：Receove (B-)------------------Blank
5.GND：Ground Line---------------Ground Line
6.VCC：+5V stand-by power input---+5V stand-by power input

Scope of delivery: 1x System-S serial RS232 to RS422 / RS485 converter adapter