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Summary of Contents for RND RS-232
- Page 1 USB to RS-232/485/422 Interface Converter User manual RND 405-00002 www.rnd-electronics.com CAUTION: Read the instructions before using the device...
- Page 2 RS-232/485/422 devices data transfer between PC and RS-232/485/422 devices. The RND 405-00002 is a universal USB/RS-232/485/422 converter with no external power supply, zero latency automatic transceiver conversion, unique I/O circuitry to automatically control the direction of data flow, and plug-and-play operation.
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Page 3: Technical Parameters
Load capacity: support point to multi-point, each converter can allow the connection of 256 RS-422 or RS-485 interface devices Transmission distance: RS-232 end no more than 5 meters, USB end no more than 5 meters; RS-485/422 end no more than 1200meters (9600bps when), USB end no more than 5 meters Interface protection: Surge protection, ±15KV electrostatic protection... -
Page 4: Communication Connection Diagram
Transmitting T/R+ (A+) RS-485 (A+) Transmitting T/R- (B-) RS-485 (B-) Receiving RXD+ (A+) Receiving RXD - (B-) USB-A: USB signal input and pin assignment diagram 6. Communication connection diagram When the mode is RS-232: RS-232 Device RS-232 Device... - Page 5 When the mode is RS-485/422: ...
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Page 6: Troubleshooting
Data communication failure A. Check whether the wiring of USB interface is correct B. Check whether the RS-232/RS-485/RS-422 output interface is wired correctly C. Check whether the power supply is normal D. Check whether the terminals are well connected E. - Page 7 Find the XR21B1411 device in other devices as shown below, right click and select Update Driver Software In the pop-up window, select Browse Computer to find the driver software According to their own computer system, select the appropriate driver software path, the following chart, the computer for Windows 7 32-bit system, then select the x86 driver, to install...
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Page 8: One-Click Installation
After that, after a short installation process, you will be prompted with a successful installation, click close to use Windows10 system access may show a driver, you need to update to a dedicated driver, update the same way as the above installation. 9.2 One-click installation Find the downloaded driver file, double click the EXE file as shown below... - Page 9 Follow the prompts and keep clicking Next to complete Mode change and configuration (default is RS-232 mode) As shown in the figure, right click on the serial device and select Properties, click Port Setting to change the mode. 1. RS-232 mode (default mode):...
- Page 10 2. RS-485 mode: 3. RS-422 mode:...
- Page 11 4. Serial port number configuration...
- Page 12 www.rnd-electronics.com...
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