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Product Description

The 140CRA93200 is a Remote I/O (RIO) drop adapter for the Modicon Quantum automation platform. It enables distributed I/O expansion by connecting a remote Quantum rack to a central PLC processor over a coaxial S908 Remote I/O network. Designed for deterministic, high-reliability communication, the module ensures synchronized I/O updates across geographically distributed industrial systems.


Core Function

The 140CRA93200 interfaces the remote Quantum backplane with an S908 RIO head module, managing time-critical data exchange with minimal latency. It maintains deterministic I/O behavior required for high-availability and continuous-process applications.


Technical Specifications

Parameter Specification
Series Modicon Quantum
Model 140CRA93200
Function Remote I/O (RIO) Drop Adapter
Communication Protocol S908 Remote I/O
Transmission Rate 1.544 Mbit/s
Media Interface Dual coaxial F-connectors (redundant)
Backplane Support Full Quantum I/O rack (per head processor limits)
Backplane Current 750 mA @ 5 VDC (typical)
Addressing Rear rotary switches (Drop address 1–31)
Maximum Cable Length Up to 15,000 ft (4,500 m) with repeaters
Diagnostics LED indicators: Ready, Run, Modbus Plus, Comm Error
Maintenance Feature Front sliding door with label area

Installation & Maintenance

The 140CRA93200 supports hot swap in most Quantum configurations, allowing replacement without powering down the entire system (application permitting temporary RIO drop loss). The front-panel protective door safeguards internal components while allowing clear field labeling.


Application

Commonly used in distributed automation architectures, including:

  • Large process plants

  • Power generation and substations

  • Water and wastewater treatment

  • Material handling systems with remote I/O islands


FAQ

Does this module support Modbus Plus communication?
Yes. The module includes an integrated Modbus Plus (RS-485) port for programming terminals or HMI connections at the remote drop.

Can the 140CRA93200 be used as a standalone PLC interface?
No. This is a RIO drop module and must be paired with a RIO head module (e.g., 140CRP93100 or 140CRP93200) located at the CPU rack.

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