Description
This converter is an RS-485 half-duplex to RS-232 converter. It is powered from the computer™s serial (COM) port so no external power is required. This unit is small in size, has a long transmission distance, can handle high data rates, is very stable in performance and connects to a standard DB9 serial (COM) port. The converter can be used in a wide range of applications including industrial automatic control and measuring systems and PLC applications.
RS232 to RS485 converters are mostly used in industrial and commercial environments.
The main differences between these RS232 to RS485 converter units are that some of them can have a DB9 connector whereas others have a terminal screw header or RJ11 connector, some are isolated some are not, some has more than one RS485 port, some has LED lights for indicating RX/TX data flow, some are port-powered and some needs an external power supply, some are industrial strength, some are consumer products.
The RS232 to RS485 itself, regardless of what model you choose, is simply a device that can convert standard RS232 data signals into RS485 signals and vice versa. Most RS232 to RS485 converters can convert data in both directions, from RS232 to RS485 and from RS485 to RS232, this is also called a bi-directional converter.
When you want to buy an RS232 to RS485 converter, you should first determine if you need an industrial-strength or a commercial/consumer-grade converter. It depends on which environment you plan to use the converter. Next, you should determine if you need an isolated or non-isolated converter, where after you can decide if you need an externally powered converter or if you can use a port-powered converter. Then you can find the connector type you need, either DB9 or DB25 connectors, terminal screw header, RJ11 connector or a combination. Finally, you should decide if you want LED lights for the TX/RX lines, this can be very helpful when troubleshooting.
Features
Compatible With RS-232, RS-485 Standard of EIA/TIA
Transmission Media: Common wire, Double wire or UTP or Shielding line.
Interface: RS232 , RS485
Baud Rate: 300bps ~ 115200bps
Port: Female DB9 (RS-232) , Male DB9 (RS-485)
Operating Temperature: 2°C ~ 50°C
Operating Humidity: 5 ~ 95% RH
Size: 57mm x 37mm x 17mm