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Rectangular metal box with four serial ports and network connector

Brainboxes

Brainboxes ES-346 4-port RS422/485 device server

SKU CH-4CFZ-33RDG MPN ES-346

Connects four RS422 or RS485 serial devices to an Ethernet network for remote access and control

  • Product typeOthers
  • Connect four serial devices over Ethernet with 4-port RS422/485 interface
  • Reliable industrial communication using RS422 and RS485 standards
  • Simple network integration for legacy serial equipment
  • Proven Brainboxes engineering since first listed June 2020
  • Compact device server design fits space-constrained installations

Four-port serial device server

The Brainboxes ES-346 connects up to four RS422 or RS485 serial devices to an Ethernet network, letting engineers integrate legacy equipment into modern monitoring or control systems without rewriting software.

Serial bandwidth and distance limits

RS422 and RS485 signalling constrain maximum cable length and data rate, so very long runs or high-throughput applications may hit the physical limits of the electrical standard rather than the server itself.

Replaces single-port converters

Moving from a one-to-one serial-to-Ethernet adapter to this four-port unit reduces cabling and power outlets when multiple instruments share a cabinet, and the step up makes sense once you have more than two devices to network.

How it compares

Measured against everything we stock in Serial & USB Device Servers, at today’s prices. Recalculated every night.

Price $388.99
Pricier than about 54% of the 168 comparable items (median $335.99).

Specifications

Product
Brand nameBrainboxes
Product typeOthers
Size & build
Shipping weight1.36 kg
Package size305 × 229 × 110 mm

Questions about this item

Which version of the ES-346 should I choose for four RS422/485 ports?

The ES-346 is the single model that provides four RS422/485 ports over Ethernet.

What does the four-port count mean when the unit is installed?

It lets you connect up to four serial devices at once, each running RS422 or RS485.

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