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SmartNode 485 Async RS232 to RS485 Interface Converter - DB9 to Terminal Block

The SmartNode 485 enables you to address RS-232 scales, lathes, readers, or other devices as an Intelligent RS-485 peripheral for use in industrial serial applications to create your own RS485 multi-drop network with RS232 devices.

Item #:  Async RS232 to RS485 Interface Converter - DB9 to Terminal Block


Call 877-877-2269 for pricing and to place order.
Please Note: Once ordered, this product cannot be cancelled or returned for credit.
Call for Pricing
*Price excludes GST

Product Features

  • Because your RS-232 devices are connected to an RS-485 network through the SmartNodes you receive all the benefits of a multidrop line.
  • The SmartNode contains 8K of on board memory for buffering/spooling.
  • The SmartNode gives you RS-232 flow control options for your nonaddressable devices.
  • Your nonaddressable RS-232 device can run a different word structure and baud rate than the RS-485 network.
  • RS-485 supports transmission distances up to 5,000 feet.
  • Built in optional terminating resistors for the RS-485 receiver of any SmartNode that is placed on the end of the daisychain.


The SmartNode 485 enables you to address an RS-232 printer, terminal, scales, lathe, reader, or other device as an intelligent RS-485 peripheral for use in industrial serial applications.

The SmartNode 485 responds to address polls, holds information until send time, and even converts data rates and word structures.

Each port can be set for different speeds and word structures. Two-wire RS-485 support is included with the product.

Standalone and card versions are available. For the card version, you'll need a 12-Card Rack (see "Related Products" in the previous screen to order).

In applications where you require external conversion, add our optional RS232/RS485/422 Converter Plus (IC108A or IC109A-R3). And if you're at your distance limit, specify RS-485 Repeaters (IC155A or IC158A).

Tech Specs


Product works with:

  • 12-Card Rack for SmartNode 485 Card (RM010-SN)
  • RS-232 <–> RS485/422 Converter Plus (IC108A, IC109A-R3)
  • RS-485 Repeaters (IC155A, IC158A)
  • Fiber Optic Multipoint Line Driver (ME540A-ST)
  • 9-Pin (DB9 Male) to Modem Cable (DB25 Male) (EHM024-0010)
  • 9-Pin (DB9 Male) to AT® Cable (DB9 Female) (EHM025-0010)
    Questions? Contact our FREE Tech Support.

* Technical specification weight is the unit weight. It is not the packaged shipping weight. For shipping weight, please contact Black Box customer service at 1-877-877-2269.



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The Double Diamond Warranty is our warranty that protects your Black Box® brand products* from accidental damage, including drops, water, and power surges.

During the warranty period, Black Box Network Services will repair or replace your damaged equipment within one week of receipt at NO CHARGE!*

Plus, get an Extended Double Diamond Warranty.

You can also extend your warranty or protect a previously purchased Black Box® brand product** for an additional year—for only 10% of the purchase price! Or, extend your coverage for a full three years for only 20% of the purchase price!

Ordering an extended warranty is easy: When viewing a product in your shopping cart, just select the one or three years of additional coverage in the dropdown menu under “Warranty Options.” For details, contact Customer Service at 724-746-5500.

* Warranty subject to certain exclusions and limitations ** Certain products may not be eligible.

What’s more, we also have a 45-day return policy. Simply call Customer Service for a Return Authorization (RA) number, return your product in new condition and in the original package, and receive a full refund.


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