WAVESHARE RS232/485/TTL Interface Converter User Manual

WAVESHARE RS232/485/TTL Interface Converter User Manual

Overview

This is an industrial USB to RS232/485/TTL isolated converter with original FT232RLinside. It features embedded protection circuits such as power isolation, ADI magnetically isolation, and TVS diode, etc. What’s more, the USB TO RS232/485/TTL comes with analuminium alloy enclosure, make it solid and durable to work. The USB TO RS232/485/TTL is very easy to use, fully automatic transcribing without delay. Due to its fast communication, stability, reliability, and safety, it is an ideal choice for industrial control equipment’s and/or applications with high communication requirement.

Features

• USB TO RS232, USB TO RS485, USB TO TTL (UART)
• Adopt original FT232RL, fast communicating, stable and reliable, better compatibility
• Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal
• Onboard unibody magnetical isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption
• Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltageand transient spike voltage in the circuit, lightning-proof & anti-electrostatic
• Onboard self-recovery fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock resistance
• Fully automatic transceiver circuit with no delay, ensures the USB port communicates with different interfaces fastly and stably, without interfering eachother
• Onboard TTL serial 3.3V/5V voltage translator, config the TTL level via switch
• Aluminium alloy enclosure with sand blasting and anodic oxidation, CNC process opening, solid and durable
• 3 LEDs for indicating the power and transceiver status
• High quality USB-B and RS232 connectors, smoothly plug/pul

Specifications

• Product type: industrial ADI magnetical isolation converter
• Baudrate: 300-921600bps
• Host port: USB
• Device port: RS485/RS232/TTL
• USB:
  • Operating voltage: 5V
  • Connector: USB-B
  • Protection: 200mA self-recovery fuse, isolated output
  • Transmission distance: ~5m
• RS485:
  • Connector: screw terminal
  • Pins: A+, B-, GND
  • Direction control: hardware automatic control
  • Protection: 600W lightning-proof and surge-suppress, 15KV ESD protection(reserved 120R balancing resistor solder pads)
  • Transmission distance: ~1200m
  • Transmission mode: point-to-multipoint (up to 32 nodes, it is recommended to use repeaters for 16 nodes or more)
• RS232:
  • Connector: DR9 male
  • Protection: TVS diode, surge protection, ESD protection
  • Transmission distance: ~15m
  • Transmission mode: point- to-point
• TTL (UART):
  • Operating voltage: 3.3V/5V
  • Connector: screw terminal
  • Pins: TXD, RXD, GND
  • Protection: clamp protection diode, over-voltage/negative-voltage proof, shock resistance
  • Transmission mode: point- to-point
• LED indicators:
  • PWR: red power indicator, light up when there is USB connection and voltageis detected
  • TXD: green TX indicator, light up when the USB port sends data
  • RXD: blue RX indicator, light up when the device ports send data back
• Operating environment:
  • Temperature: -15℃ ~ 70℃
  • Humidity: 5%RH ~ 95%RH
• Operating system: Windows 10 / 8.1 / 8 / 7 / XP

Note: There is a pad reserved for 120R balancing resistance. Recommend you to weld120Ω resistors to the first and last devices if you connect many devices at the same.

Driver Installation

1. Connect module to PC, if you find that a yellow exclamation symbol occur as below,
   

2. Download the driver from Waves are Wiki
   https://www.waveshare.com/wiki/USB_TO_RS232/485/TTL#Resources

3. After downloading, extract and install it
   

4. Click Extract:
   

5. Click Next Step：
   
   
   

6. After installing, you can check if the yellow exclamation symbol disappear.
   

Testing

INTERFACES

RS232

Connect RS232 and USB interface to PC. Open two Serial Assistance Software andset them with same baudrate, test them as below：

RS485

Connect RS485 interface to RS485 interface of target board (here we use our RS485board to test), A to A and B to B. Open two Serial Software on PC and test it. （Note that RS485 Board should pull-high RSE to send data and pull0download it to receive)

TTL

Connect TTL interface to other UART board and connect to PC, open two Serial software and test：

References

• USB TO RS232/485/TTL - Waveshare Wiki

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