Communica

Buy 1-Port RS485/RS232/RS422 to Ethernet Converters - Local Stock at Communica South Africa

Shop 1-port RS485/232/422 to Ethernet converters in South Africa at Communica. Connect serial devices to LAN. Local pickup, VAT invoices, expert support.

sensors and semiconductors
June 2, 2026
4 min read

Seamless Serial-to-IP Integration

Bridge RS232, RS485 or RS422 devices to LAN for easy remote access.

Local Availability in SA

Stock and pickup options from Samrand, Pretoria, and Cape Town branches.

Wide Device Compatibility

Choose from a range of converters supporting Modbus, TCP/IP, and diverse serial protocols.

Modernise Serial Devices with Ethernet Connectivity

Many critical South African industry, automation, and laboratory systems still rely on RS232, RS422, or RS485 serial connections for equipment like PLCs, CNC machines, weighing stations, access controllers, and meters. With networked control and remote logging increasingly the norm, a 1-port RS485/232/422 to Ethernet converter provides a fast, dependable bridge to your LAN or WAN, upgrading legacy serial gear for compatibility with modern software and dashboards.

Why Choose a Communica-Supplied Serial-Ethernet Converter?

  • Reliable hardware from proven global brands, designed for 24/7 uptime in South African environments.
  • Support for single-port (1-channel) connection, suiting most panel, lab, or in-field retrofit needs without paying for unneeded extra capacity.
  • Available at Samrand (Centurion head office/warehouse) as well as Cape Town & Pretoria CBD branches - ideal for urgent projects or collections.
  • Expert technical support and VAT-compliant invoicing for business procurement or university labs.
  • Stock includes models supporting Modbus/TCP, HTTP, virtual COM port (VCOM), and transparent serial tunneling - ready for use with SCADA, IoT, or industrial automation setups.
South African usage tip: For UPSs, weighbridges, or CCTV RS485 PTZ cameras in demanding local sites, look for surge-protected, industrial-rated models. Lead time for specialized variants may vary, but many common converters are in local stock now.

Feature Comparison Table

Feature Typical Spec Common Options at Communica
Supported Serial RS232, RS422, RS485 (switchable or all-in-one) RJ45/DB9/terminal block inputs
LAN Interface 10/100 Mbps Ethernet (auto MDI-X) Standard RJ45; PoE variants offered by some brands
Config Methods WebGUI, serial AT commands, or proprietary utility LAN config, some with LCD/status LEDs
Protocols Modbus/TCP, TCP Server/Client, UDP, VCOM VCOM drivers, Modbus compatible models
Mounting DIN-rail or desktop Panel brackets, DIN kits available for most models

Choose the converter model that matches your device's baud rates, protocol needs, and installation environment. Communica can provide selection advice if you're unsure which standard to use (RS485 for multi-drop/metering, RS232 for legacy point-to-point, RS422 for longer distance single-ended connections).

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Choosing the Right 1-Port Serial Ethernet Converter

Key Specification Checklist

  • Determine physical serial interface required (RS485, RS232, or RS422) and match to your device connector: DB9, DB25, or terminal block.
  • Confirm data rates (baud rates) supported - typical industrial ranges are 1200-115200bps, but high-speed models go higher.
  • Select protocol support (basic TCP/UDP for tunneling; Modbus/TCP for automation; HTTP/SNMP if you need remote management).
  • Installation environment: look for DIN-rail or panel mount, wide temperature tolerance for outdoor panels, or compact desktop for lab/maker benches.
  • Power supply needs: many models accept 9-36V DC or have mains adapters. PoE is optional on some advanced versions.

South African Application Examples

  • SCADA and PLC retrofits - Remotely connect Siemens, ABB, or Omron serial PLCs to plant LAN.
  • Utility meter logging - Poll serial meters in substations and transmit data over ethernet to control rooms.
  • Access Control and Security - Link RS485 access controllers or PTZ camera heads for campus or industrial estate security upgrades.
  • Educational labs - Convert legacy serial instruments to network use for student projects or remote diagnostics.
For procurement: Larger projects (10+ units) or repeat buys can request project quotes and bulk pricing - Communica provides formal quotations and VAT documentation for South African business, campus, and research customers.

Popular Brands and Models

  • USR IOT, ATC, and HI-FOCUS: Leading brands for RS485/RS232/RS422 to Ethernet conversions in industry and makerspace settings.
  • Compatible with most Windows, Linux, and embedded systems (VCOM drivers and setup utilities usually included).
  • Accessories available: patch cables, panel mounts, surge protection for field installations.

Availability for top-selling converters is generally immediate at the Samrand warehouse; allow 2-5 working days for special-order variants or bulk. Confirm up-to-date local stock or branch pickup before visiting, as inventory is dynamic.

Sources

Communica Samrand — Electronic Component Experts

Communica supplies semiconductors and electronic components to industries such as automotive, electrical, automation, mining, and education.

Last updated: June 2, 2026

Disclaimer: This content is for educational purposes only. Product availability, pricing, and specifications are subject to change. Always verify current details on the retailer's website before making a purchase. We may earn affiliate commissions from qualifying purchases.

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