Communica

Active AS-i Modules for Sale in South Africa - Local Stock at Communica

Browse active AS-Interface (AS-i) modules for industrial automation at Communica. Rapid stock checks, VAT invoices, top brands, and branch pickup across South Africa.

internet of things
June 15, 2026
3 min read

Extensive AS-i Module Range

Choose from top brands for digital and analog I/O, expansion, and diagnostics.

Local Stock & Support

Fast availability, VAT invoicing, and expert guidance from Communica branches.

Easy Integration

Designed for PLCs, sensors, and actuators in South African industry projects.

Streamline Automation with Reliable Active AS-i Modules

AS-Interface (AS-i) is a robust and cost-effective fieldbus system for industrial automation, allowing simple two-wire connectivity for sensors, actuators, and distributed I/O. At Communica, we stock a broad selection of active AS-i modules designed for seamless integration with your PLC or control network - whether you need to add digital inputs and outputs, expand analog capabilities, or enhance diagnostics on your production floor.

With decades of experience supplying automation components across South Africa, our range ensures engineers, students, and maintenance technicians get proven modules, fast. All products come with VAT-invoiced sales for procurement, and you can collect from our Samrand, Pretoria, or Cape Town locations.

What is an Active AS-i Module?

Active AS-i modules act as interface points, connecting sensors, switches, and actuators to a central controller over the AS-Interface network. Unlike passive junction blocks, these modules offer integrated electronics for:

  • Digital and analog input/output signal conversion
  • Advanced diagnostics (e.g., wire break, short circuit detection)
  • Direct field mounting for decentralised installations
  • Easy integration of industrial devices (proximity switches, valves, etc.)

Make sure to check your PLC or automation system for AS-i master compatibility - most leading brands such as Siemens, ABB, and IFM support standard AS-i nodes and modules available at Communica.

Types of Active AS-i Modules Stocked

Module Type Application Typical Features
Digital Input Switches, sensors 4-8 channels, LED indication
Digital Output Solenoids, relays 4-8 channels, short circuit protection
Analog Input/Output Sensors (0-10V/4-20mA) 1-2 channels, signal conditioning
Addressing Modules Network setup ID switches, LCD display

Whether you are retrofitting plant equipment or rolling out a new automation line, you can find modules compatible with leading control brands. Use the Communica automation category to explore available stock by specification.

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Why Buy Active AS-i Modules from Communica?

  • Local Stock: Access a robust product range held in our Samrand warehouse, with real-time updates for South African buyers.
  • Fast Branch Collection: Collect at Samrand (Centurion), Pretoria CBD, or Cape Town branches - ideal for urgent project schedules.
  • Industry-Focused Support: Our technical team understands the AS-i ecosystem and South African industrial context, offering guidance on device selection and integration.
  • Top Brands: Stock includes trusted names like IFM, ABB, and Amphenol, plus support for compatible sensors, power supplies, and cabling.
  • Procurement Ready: VAT invoices and quotation support provided - suitable for education labs, system integrators, and plant maintenance alike.

Specification Highlights

Key parameters to compare when selecting an active AS-i module:

Parameter Typical Range/Value SA Buying Consideration
Voltage 24V DC (standard) Matches common panel supplies; check existing bus voltages
Number of Channels 4, 8, 16+ Plan for current & future expansion
Mounting Type DIN rail, field housing Check for IP ratings
Diagnostics LED status, short circuit detect Eases troubleshooting on site

Tip: For industry and higher education training environments, active AS-i modules offer hot-swap flexibility and reduce panel wiring overhead versus legacy multi-core cable systems.

How to Compare and Order

  • Review your automation network's channel and power requirements
  • Identify required input/output types (digital/analog/addressing)
  • Use our branches & hours page for nearest pickup
  • For bulk or project orders, request a quote or VAT invoice as needed

Find compatible sensors, cabling, and power supplies in the full Communica product index. Our automation specialists can assist with integration advice for South African production, research labs, or training setups.

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 15, 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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