System Overview
An AS-interface network offers a simple, cost-effective alternative to conventional cabling at the lowest level of automation. This network can operate directly in conjunction with an existing PLC or can be linked to a higher-level bus system for low-cost remote I/O. ifm’s goal is to improve functionality, simplify installation and maintain competitive price points.

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AS-i Controllers and Gateways
AS-i controllers provide direct connection of AS-i to higher level bus systems including EtherNet/IP, Profibus and DeviceNet. AS-i backplane masters provide direct connection of AS-i to most PLCs.

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Power Supplies
AS-i power supplies provide power to all devices connected to the AS-i flat cable, including modules, sensors, intelligent actuators and repeaters. Standard 24 VDC power supplies can power periphery devices.

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Cabinet I/O Modules
DIN rail mountable modules are used to connect digital and analog inputs and outputs in cabinet or junction box applications. Removable combicon connectors are included for easy connection of periphery devices.

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Field I/O Modules
Field I/O modules connect digital and analog inputs and outputs directly on the AS-i flat cable at the machine location. Modules are available for standard industrial automation applications as well as harsh environments.

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Network Extensions
The length of standard AS-i systems can be extended from 100 m up to 300 m by the use of repeaters and other devices.

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Network Cables & Accessories
The unique AS-i flat cable provides simple 2-wire connection for both power and communication over the entire AS-i system. The use of splitters and taps can greatly increase the flexibility of the system.

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AS-i Sensor Solutions
ifm manufactures a variety of sensors that are AS-i ready. The inductive, valve position and temperature sensors connect directly to the network as an AS-i node, which reduces the need for I/O modules.

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