WAVESHARE USB TORS232-485-TTL Industrial Isolated Converter User Manual

WAVESHARE USB TORS232-485-TTL Industrial Isolated Converter

Overview

This is an industrial USB to RS232/485/TTL isolated converter with original FT232RL inside. It features embedded protection circuits such as power isolation, ADI magnetical isolation, and TVS diode, etc. What’s more, the USB TO RS232/485/TTL comes with an aluminum alloy enclosure, making it solid and durable to work. The USB TO RS232/485/TTL is very easy to use, fully automatic transceiving without delay. Due to its fast communication, stability, reliability, and safety, it is an ideal choice for industrial control equipment and/or applications with high communication requirements.

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 suppresses surge voltage and 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
• A fully automatic transceiver circuit with no delay ensures the USB port communicates with different interfaces fastly and stably, without interfering with each other
• Onboard TTL serial 3.3V/5V voltage translator, config the TTL level via switch
• Aluminum alloy enclosure with sandblasting 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
• 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-multipoints (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, RDX, 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 a USB connection and voltage is detected
  • TXD: green TX indicator, light up when the USB port sends data
  • RDX: 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 weld 120Ω resistors to the first and last devices if you connect many devices at the same time.

Driver Installation

1. Connect module to PC, if you find that a yellow exclamation symbol occurs as below, the driver is required.

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

3. After downloading, extracting, and installing it

4. Click Extract：

5. Click Next Step：

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

Testing

INTERFACES

Connect RS232 and USB interface to PC. Open two Serial Assistance Software and set them with the same baud rate, test them as below：

Connect RS485 interface to RS485 interface of target board (here we use our RS485 board 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））

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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