Specifications

general type usb to rs422 serial db9 converter
1.+/-15KV electrostatic protection
2.with ce/rohs/fcc approval
3.support oem

general type usb to rs422 serial db9 converter details:

 

Performance parameters

1. Standards: conforming to USBV1.1 and 1.0, EIA RS-485 and RS-422, backwards compatible.

2. USB signals: VCC DATA+ DATA- GND FG

3. RS-485 signals: T+, T-, GND.

4. RS-422 signals: T+, T-, R+, R-, GND.

5. Working modes: asynchronous, point-to-point or point-to-multipoint, 2-line half duplex and 4-line full duplex.

6. Direction control: adoption of automatic data stream control for automatic recognition and control of data transmission direction.

7. Baud rate: 300-128,000bps, automatic detection of the transmission rate of the serial interface signal.

8. Workload ability: point-to-multipoint supported, a maximum of 32 RS-422 or RS-485 interface equipments are supported.

9. Transmission distance: 1200 meters for RS-485/422 end (when 9,600bps) and a maximum of 5 meters for USB.

10. Signal indication: 3 indicator lights for Power (PWR), Send (TXD) and Receive (RXD).

11. Transmission media: twisted-pair cable or shielded cable.

12. Transmission rate: 128,000bps to 300M.

                                          38,400bps to 600M.

                                          9,600bps to 1200M.

13. Dimensions: 1555mm 36mm 16mm.

14.Working environment: -25 to 70 , relative humidity5% to 95%.

15. Transmission distance: 0-1200meters (128,000bps-9,600bps)

16. Windows95/98/2000/XP/Vista/Win7/Linux and IMAG are supported.

 

Connector and signal

RS-485/RS-422 output signals and PIN assignment

DB9 Connector(PIN)	Output Signal	RS-422 full-duplex	RS-485 half duplex
1	T/R+	Sending (A+)	RS-485(A+)
2	T/R-	Sending(B-)	RS-485(B-)
3	RXD+	Receiving(A+)	NULL
4	RXD-	Receiving(B-)	NULL
5	GND	Grounding	Grounding
6	N/A
7	N/A
8	N/A
9	N/A

 

 

2. USB-B female: USB output signals and PIN assignment

Communication Connection Chart

 

1-      Standard USB A type male connector

 

2-      Filter magnetic pole

 

3-      Transparent and shielded standard 2.0 communication line

 

4-      Fine shell(blue)

 

5-      Standard DB9 male connector

 

6-      MCU adopts the product of the TaiWan chip

 

 

 

Problems and troubleshooting

 

1. Data communication failure

 

A. Check to make sure USB cable is OK.

 

B. Make sure RS-485422 output interface connection is correct.

 

C. Make sure power supply is OK.

 

D. Make sure the wire terminal connection is OK.

 

E. Make sure the indicator lights flash when receiving.

 

F. Make sure the indicator lights flash when sending.

 

2. Data missing or incorrect

 

A. Check to see whether the data rate and format at both ends of the communication equipment are consistent.