Remote IO

Distributed modules that allow sensors and actuators to communicate with the central PLC from a distance, reducing wiring complexity and installation costs.

Siemens | SIMATIC ET 200 Systems

Siemens ET 200 systems are the most versatile distributed I/O stations on the market. They are designed for a “cabinet-free” or “reduced-footprint” approach, allowing for high-density signal processing right at the machine level.

ET 200SP

Model Number: 6ES7155-6AU01-0BN0

Extremely compact; “Push-in” terminals; supports up to 64 modules per station.

Key Technical Specifications:

  • Internal data transmission allows for high-precision timestamping of signals.

  • Modules can be replaced during operation without disrupting the rest of the station.

  • F-modules (Fail-safe) can be mixed with standard modules in the same rack.

ET 200AL

Model Number: 6ES71571AB000AB0

Ruggedized for use outside the cabinet; oil-resistant and vibration-proof; M8/M12 connections.

Key Technical Specifications:

  • Can be screwed directly onto the machine frame in any orientation.

  • Plastic housing optimized for moving applications like robotic arms.

  • Connects to ET 200SP via “Internal Bus” to extend cabinet signals to the field.

Allen-Bradley | Distributed I/O Solutions

Allen-Bradley’s distributed I/O is the backbone of the “Connected Enterprise.” Their modules are favored for their high “Removal and Insertion Under Power” (RIUP) reliability and seamless integration into Studio 5000 software.

POINT I/O™ (1734)

Model Number: 1734-AENTR

Granular I/O (1 to 8 points per module); ideal for localized control where space is a premium.

Key Technical Specifications:

  • Buy only the I/O you need; add modules one at a time as system requirements grow.

  • Communication adapters support ring topology for network resiliency.

  • Removable Terminal Blocks (RTBs) allow for pre-wiring before the modules are installed.

FLEX™ I/O (1794)

Model Number: 1794-AENTR

The classic rugged distributed I/O; massive installed base with high reliability in harsh environments.

Key Technical Specifications:

  • Specialized versions available for -20°C to +70°C environments.

  • High-density analog modules (up to 8 points) with isolated inputs to reduce noise.

  • Use the same terminal base for different module types to simplify procurement and spares.

Sourcing Legacy or Hard-to-Find I/O?

We specialize in sourcing “End of Life” (EOL) modules for both Siemens and Allen-Bradley to keep your older systems running.

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