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Description
2-4 Wire 422/485 9 pin Converter - B+B SmartWorxThe 2 4 Wire 422 485 9 pin Converter from B+B SmartWorx is a compact, port powered solution that bridges RS 232 devices to robust RS 422 and RS 485 networks. Designed for reliability in industrial environments, this converter transforms TD (transmit) and RD (receive) signals from RS 232 into the differential RS 422 RS 485 formats, enabling longer cable runs, multi drop networks, and improved noise immunity. With Automatic Send Data Control (SDC) built
The 2-4 Wire 422/485 9 pin Converter from B+B SmartWorx is a compact, port-powered solution that bridges RS-232 devices to robust RS-422 and RS-485 networks. Designed for reliability in industrial environments, this converter transforms TD (transmit) and RD (receive) signals from RS-232 into the differential RS-422/RS-485 formats, enabling longer cable runs, multi-drop networks, and improved noise immunity. With Automatic Send Data Control (SDC) built in, the unit automatically enables the RS-485 driver whenever data appears on the RS-232 side, removing the need for external control signals and simplifying integration into existing equipment. This makes it an ideal choice for automation, process control, data acquisition, and serial device networks where simplicity and dependability matter most.
- Port-powered RS-232 to RS-422/RS-485 converter that draws power directly from the host serial port, eliminating the need for an external power supply.
- Supports both 2-wire and 4-wire RS-422/RS-485 configurations, enabling flexible topologies such as point-to-point, multidrop, and networked devices across varying distances.
- Automatic Send Data Control (SDC) automatically enables the RS-485 driver when data is present on the RS-232 side, reducing latency and removing manual direction-control requirements.
- 9-pin (DB9) port design and durable construction provide reliable performance in industrial settings while preserving compatibility with standard serial interfaces.
- Simple, plug-and-play operation with no external power dependency and straightforward topology integration for quick deployment in new or existing systems.
Technical Details of 2-4 Wire RS-422/RS-485 Converter (B+B SmartWorx)
- Type: Port-powered RS-232 to RS-422/RS-485 converter supporting 2-wire and 4-wire configurations
- Connector: 9-pin DB9 port on the RS-232 side for host interface; RS-422/RS-485 network connections suitable for differential signaling
- Power: Draws operating power from the RS-232 port (no external supply required)
- Direction control: Automatic Send Data Control (SDC) automates RS-485 driver enable/disable based on RS-232 activity
- Data compatibility: Converts TD and RD lines from RS-232 to differential RS-422/RS-485 signals for reliable long-distance communication
- Environment: Designed for durability in standard industrial environments and compatible with typical serial devices and controllers
- Brand and model lineage: B+B SmartWorx line of serial interface devices known for robust industrial communications
how to install 2-4 Wire 422/485 9 pin Converter
- Power is supplied by the host RS-232 port, so connect the converter to the DS carte or computer’s serial port using a standard RS-232 cable to the DB9 connector.
- Connect the RS-422/RS-485 network lines to the corresponding terminals or connectors provided on the converter according to your topology (2-wire or 4-wire as required by your device network).
- Ensure the RS-232 device is configured for the desired baud rate, data bits, parity, and stop bits that match the RS-422/RS-485 network requirements, since the converter passes through the RS-232 framing to the differential side.
- Power the host device and verify the link status. The Automatic Send Data Control will enable the RS-485 driver automatically when data is transmitted from the RS-232 side.
- Test the communication with a loopback or an end-to-end data transfer test to confirm successful data exchange across the RS-422/RS-485 network. If issues arise, check cabling, termination resistors, and network topology for compatibility.
Frequently asked questions
- What is the purpose of this converter? It bridges RS-232 devices to RS-422/RS-485 networks, enabling longer distance communication with improved noise immunity and the ability to support multi-drop networks.
- Do I need an external power supply? No. The unit is port-powered and draws its operating power directly from the RS-232 port.
- What is Automatic Send Data Control (SDC)? SDC is a feature that automatically enables the RS-485 driver when data appears on the RS-232 side, simplifying integration and eliminating manual driver control.
- Can I use 2-wire and 4-wire configurations? Yes. The converter supports both 2-wire and 4-wire RS-422/RS-485 configurations, providing flexibility for different network topologies.
- Is this compatible with standard Windows or Linux systems? Devices in the B+B SmartWorx family are designed for broad compatibility with common operating systems and serial interfaces. For specific driver requirements or compatibility, consult your host system documentation and the product manual.
- What kind of networks can I connect? You can connect point-to-point links or multidrop RS-422/RS-485 networks, depending on your topography and termination strategy. Ensure proper biasing and termination for reliable operation.
- What baud rates are supported? The converter operates at standard RS-232 baud rates and passes those rates to the RS-422/RS-485 side. Match the host and network settings to ensure reliable communication.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.7 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 5
A perfect start
Format: Kindle
This is exactly the kind of graphic novel I was looking for. Full of sweetness with a little bit of bite. Reminds me of the great comic series bone. Great story, great art, I can’t wait to get into the next chapter.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Draws You in to the Series
Format: Paperback
The Stonekeeper is the first volume in Kazu Kibuishi's graphic novel series. Although aimed at middle school, it is good for upper elementary school children, and is enjoyable for adults as well. 2 years after the death of Emily and Navin's father in a tragic car crash, Karen moves her children to the family's old house in a dense forest. Built by Karen's grandfather Silas who then disappeared, it has been abandoned for years. During the first night, they hear a strange noise, and Karen is captured by an Arachnopod, a creature from a parallel world, Alledia. Emily and Navin follow their mother into the parallel world where they find their ailing great-grandfather Silas. He tells Emily about the power of the amulet she found in his house. It is the key to ruling Alledia. Silas expires, but not before instructing his robot and animal minions to aid Emily and Navin. This first volume, besides setting the story arc, narrates the rescue of Karen. Unfortunately, she is poisoned setting up the next volume for finding the antidote.
Besides an engaging story with compelling characters, Kibuishi is a fantastic illustrator. As with many exemplar graphic novels the spare text is amplified and much of the story told through his illustrations. The creatures of Alledia are strange enough to pique our imagination, but not so much that they are totally alien in form.
After reading Stonekeeper, I am eager to see what happens next with Emily and Navin, and their company.
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Reviewed in the United States on March 1, 2014
★★★★★ 5
wow
Format: Paperback
I remember when I read in reviews that kids had gotten sucked into this story and had become fans of this series so quickly.... Well, my daughter resisted till page 13 or 14... but since then she's in it... She's very picky when it is about books and even that she's 9, she started to read in English only a few months ago ( we lived abroad,she reads other language) so she still prefers books that is easy to read.
Anyway, get ready, this series is addicted... gooooood :) that is what we need :)
I mean, you can complain that this is a comic book but still, at least the child has the book in his/her hand and not a tablet... and at least he/she reads...
I'm really happy that I got this book for her.
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Reviewed in the United States on November 16, 2023
★★★★★ 5
Wonderful Story, But Small Print
Format: Paperback, Format: Paperback
My son really likes this book. He usually doesn’t enjoy reading much, but this one caught his interest right away. The illustrations are great, and the story is engaging too. He finished the book in just two days! I already bought the second one and am thinking about getting the whole series.
The only thing I didn’t like was the size of the letters. It wasn’t very easy for my 9-year-old to read on his own, and sometimes I had to help him.
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Reviewed in the United States on October 14, 2025
★★★★★ 5
Great story and great quality!
Format: Hardcover
These books are always great! One of my son’s faves. Great story and great quality as usual!
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Reviewed in the United States on May 15, 2026