System-S Serial RS232 to RS422 / RS485 Converter Adapter

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)
• Operation: 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 port)

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. Rig Instructions: R1

DB9 Male (Output) RS-422 Full Duplex:

• T/R +：Send (A+)
• T/R -：Send (B-)
• RXD +：Receive (A+)
• RXD -：Receive (B-)
• GND: Ground Line
• VCC：+5V stand-by power input

RS-485 Full Duplex:

• RS-485 (A+)
• RS-485 (B-)
• Blank
• Blank
• Ground Line
• +5V stand-by power input

Scope of delivery: 1x System-S Serial RS232 to RS422 / RS485 Converter Adapter