RS232 To RS485 Converter Serial Data Adapter RS-232 To RS-485 Interface Communication Driver

Product description

It is an industrial-grade optical isolation multifunctional converter with external power supply, it compatible with RS- 232/RS-485/RS-422 standard. It can change the single-ended RS-232 signal to balanced RS-485/RS-422 signal, The internal optoelectronic isolator and DC Voltage stabilizer can effective lightning suppression , and the ESD offer 600W Surge Protection for each line, it can avoid the lightning strike and prevent interference effectively. RS-232 interface use the DB9 female connector connect with the serial of computer ,on the other side RS-485/RS-422 use the DB9 male connect with 6 terminal board. Since the RS-485 support two wire half duplex, which means the RS-485 only have two lines to receive data and send data. Handshaking signal(RTS Request To Send) usually control the direction of data sending, the inner circuit of HXSP-2108C converter is able to auto sensing the direction of data flow, and switch to ENABLE CONTROLS automatic. A RS-485 network can be built convenient without any handshaking signal; the RS-485 ENABLE CONTROLS is full transparent, no need to modify any software for the old working method based on RS-232. HXSP-2108C converter comes with external power supply, the characteristic have small in design, long transmission distance, performance stable, etc. it is mainly used for the field of electricity, industrial automatic control, IC card billing system and time attendance, one card solution, access control 
system, parking system, and so on.

Technical parameters:

1. Interface characteristic: compatible with the standards of RS- 232C and RS485/RS-422 issued by EIA/TIA.
2. Electric interface: DB9 female connector for RS-232 interface input end DB9 male connector for RS-422/RS-485 interface output end.
3. Protection grade: +/-15KV ESD protection for RS-232 interface, and 600W surge protection each line for RS-422 and RS- 485 interfaces.
4. Isolation degree: isolation voltage 2500Vrms 500DC non-stop.
5. Operation mode: asynchronous half duplex or asynchronous full duplex.
6. Signal indication: 3 pilot lamps for Power (PWR), Send (TXD) and Receive (RXD).
7. Transmission media: twisted pair cable or shielded cable.
8. Transmission rate: 115.2K BPS to 300M and 9,600 BPS to 1.2KM.
9. Dimensions: 113mm*55mm*25mm.
10. Working circumstance: -25 to 70 , relative humidity 5%-95%.
11. Transmission distance: 0-1,200meters (115,200bps-9,600bps).

Connector and signal
RS-232C bay-line distribution 
DB9 Female (PIN) RS-232C Interface Signal
1 Earth proteation
2 Receive data SIN(RXD)
3 Send data SOUT(TXD)
4 Data terminal ready DTR
5 Ground Signal GND
6 Data seeting ready DSR
7 Request send RTS
8 Clear send CTS
9 Ring indication RI

RS-485/RS-422 output signal and connector end bay-line distribution
DB9 Male (PIN) RJ45 Output Signal RS-422 full-duplex connection RS-485 half-duplex connection
1 1 T/R+ Send(A+) RS-485(A+)
2 2 T/R- Send(B-) RS-485(B-)
3 3 RXD+ Receive(A+) None
4 6 RXD- Receive(B-) None
5 4,5,7,8 GND Underground line Underground line
6 VCC 9~30V DC 9~30V DC
7 N/A 
8 N/A 
9 N/A 


Hardware installment and application
Read the user manual carefully before installing the HK-5103A photoelectric isolation interface converter. Connect the attached communication cable to RS-232 interface, and insert the power supply converter to power socket. The product adopts the DB-9/DB-9 general used connector for input and output interface without jumper setting for RS-485 or RS-422 automatic communication mode. Either twisted pair cable or shielded cable is applicable for easy installation or un-installation. T/R+T/R-represents sending and receiving the A+/B-, RXD+/RXD- represents receiving the A+/B-,VCC represents power input or output, GND represents public underground line. Point-to-point and point-to-multipoint.Half duplex communication use the two lines of T/R+ and T/R-, point-to-point and point-to-multipoint full duplex communication use the four lines of T/R+ T/R- RXD+ and RXD-.
WST-RS485T232 interface converter supports the following 4 communication modes:
1. Point-to-point 4-line full duplex
2. Point-to-multipoint 4-line full duplex
3. Point-to-point 2-line half duplex
4. Point-to-multipoint 2-line half duplex
In order to prevent the signal reflection or interference when converter is used in full-duplex or half-duplex mode a proper matching resistance should be connected at the terminal of the line (120 1/4W).

Communication connection chart

Conversion from RS-232 to RS-422
1.RS-422 point-to-point 4-line full duplex communication
externally-powered opto-isolated rs232 to rs485 / rs422 converter
2. RS-485 point-to-multipoint /2-line half duplex
externally-powered opto-isolated rs232 to rs485 / rs422 converter
3. Half-duplex communication connections between HK-5103A interfaces
externally-powered opto-isolated rs232 to rs485 / rs422 converter

Conversion from RS-232 to RS-485
1. RS-485 point-to-point /2-line half duplex
externally-powered opto-isolated rs232 to rs485 / rs422 converter
2. RS-485 point-to-multipoint /2-line half duplex
externally-powered opto-isolated rs232 to rs485 / rs422 converter
3. Half-duplex communication connections between HK-5103A interfaces
externally-powered opto-isolated rs232 to rs485 / rs422 converter

Package Content
1 x Converter
1 x Terminal Block
1 x Power Supply
1 x RS232 Cable

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