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USB TO RS485 Bidirectional Converter
Industrial USB to RS485 bidirectional converter with original FT232RL and SP485EEN chip. Due to its stable communication, it is an ideal choice for industrial control equipments and/or applications with high communication requirement.
The USB Signal Can Be Converted Into A Balanced Differential RS485 Signal And The Transmission Rate Is Stable. The Reliable Speed Is 300-921600bps, The Transmission Distance Is About 1.2km For RS485, And About 5 Meters For USB.
Features At A Glance
- Support USB to RS485 bidirectional conversion
- Onboard Original FT232RL and SP485EEN chip. Fast communication, stable and reliable, better compatibility
- Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & anti-electrostatic
- Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock resistance
- 3 LEDs for indicating the power and transceiver status
A Hornback
2025-08-31 09:39:39
I've had it for several months and I'm 100% satisfied.
James Henry Garriga 111
2025-08-09 18:50:44
Used this for bas systems integration for bacnet mstp to serial for ciper30. I also intend to try to go straight to a local workstation to do pre programming
Customer
2025-07-29 09:34:25
This review is for 2PCS Waveshare Industrial USB to RS485 Converter with Original FT232RL and SP485EEN Embedded Protection Circuits for Industrial Control Equipments and/or ApplicationsThe kit includes a pair of RS-485USB converters, 2 USB A Male ->USB A Female extender cables. The extenders may be needed because the transceivers are somewhat thicker and wider than is typical for USB devices, which may obstruct adjacent ports. The RS-485 connections are made on a three pin screw terminal block containing the A, B and GND signals. Two small screwdrivers are provided for the blocks.RS-485 is very effective in spanning long distances at high speeds. The usual formula is length is meters * speed in baud I tested these at speeds from 115,200 baud up to 2,000,000 baud using a pair of minicom sessions under Linux. The devices appear as USB serial ports, due to their FTDI UARTUSB converter. Monitored the A and B signals at various speeds on a 500MHz oscilloscope.. The rise/fall times were fairly fast, 4 ns at 2,000,000 baud, and the signals were inverted with respect to each other, as expected. I did notice a small glitch in both edges of the A signal at higher baud rates, but that had no effect on communications and could have been made worse by my testing setup.I used one of these to talk to a Davis weather station through about 25M of cable and it received the telemetry without any errors, even in the presence of a 1.5KW RF signal on 7 MHz with the antenna 10M away from the RS-485 cable.Overall, these devices do exactly what they say and will be useful for long distance communications in electrically noisy environments. Recommended.
Andy
2025-06-11 11:48:38
It's nice to be able to plug into the USB and get the comms on the RS485 network I have at home.My home has a couple PLCs and more than a few devices that are generally connected over an RS485 bus. It's nice to get diagnostic info directly on the laptop when I go to troubleshoot some of these devices.This is handy, I don't have to build my own, and it's easy to use.If you're in the market for something like this, you already know, probably, why you need it. This makes it easy to do.Nice touch including the USB cable extensions as well. Don't really need the screwdrivers, but always good to have extras.
Review guy
2025-05-31 12:17:30
I tested this between 2 computers. I cranked up the baud rates on both sides to the max (921600). I had each computer running a terminal session on the respective serial port. Communication back and forth worked fine. I only used short test leads between the 2 converters so I didn't test the range. To get the rated 1.2 km (if even possible) you would need some pretty good quality twisted pair shielded cabling I think.This isn't quite a true test of the RS485 capability since for all I know it could have been using some other protocol since I was going between the 2 converters and nothing else in the middle. However, one would presume that in fact it was RS485 protocol that was being used.This is a great way to extend RS485 connectivity to devices - not just for computers but things like Raspberry Pi and other microcontrollers with USB ports should be able to make use of this.I didn't need to install a driver, my computer used a driver published by FTDI (Future Technologies Devices International). I don't know if it auto-loaded the driver or was just something that Windows had there by default, or perhaps had previously loaded from some other device I had previously used. Neither computer had an issue though so I suspect it may be a preloaded driver that comes with Windows.I didn't test it with my Pi but I am hoping it works with that too. This seems like a good price for 2 of these, but I haven't comparison shopped so not sure what these typically go for.Of note, this only supports 2 wire implementation, if you want to connect to a 4 wire RS485 device you will have to bridge, if that device doesn't support bridging (4 wire to 2 wire) you will be out of luck. However, the vast majority of RS-485 devices I have come across are fine with 2 wire mode and many only support that (very few applications use full duplex, half duplex is the norm).
Fabio C.
2025-05-10 20:59:25
FUNZIONA PERFETTAMENTE
MH Oxon
2025-03-15 18:28:17
Wasted money buying another type of adapter which didn't work, but these work to connect my sunsynk inverters to a raspberry pi 4 running solar assistant, hope this helps someone.
Sprossenflieger
2025-02-05 13:49:19
Funktioniert
Les Jul's
2025-01-26 15:40:58
Super kit de RS485.Une fois connectés ils sont facilement détectés. Si besoin il faut chercher les drivers chez FTDI (FT232RL).Rien à redire sur le produit, les boitiers sont bien fait c'est propre.Juste à connecter les borniers via les vis.Comme je le dis dans le titre c'est un composant FTDI dedans, c'est du sérieux.C'est une marque que j'utilise depuis des années dans mes systèmes.Ce composant là ne dépasse pas les 3 MBaud, donc un peu moins une fois le protocole choisi (UART / HDLC etc...).Après c'est un peu cher, si vous ne chercher pas un boitier fermer il est possible de trouver la même chose pour 2 à 3 fois moins cher.
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