Why the 140CRP31200 Still Matters on Live Plants
When a Quantum rack drops offline, production stops. The 140CRP31200 is the Ethernet RIO head-end module that keeps remote I/O talking to the controller over a daisy-chain ring. Schneider Electric discontinued it on 2018-12-31, so sourcing a tested spare is now the fastest route back to uptime. That is exactly the gap Oil AutoTech fills: fast dispatch, worldwide, with hands-on technical selection help.
What This Module Does
The 140CRP31200 is a Modicon Quantum Ethernet RIO master (non-S908). It occupies one slot and manages the ring topology that connects remote drops. Its partner device is the 140CRA31200 slave. If your architecture already uses that slave, this head-end is the matching master.
Key Parameters at a Glance
| Specification | Value |
|---|---|
| Communication type | Ethernet RIO master (non-S908) |
| Topology | Daisy-chain ring |
| Compatible slave | 140CRA31200 |
| Slots required | 1 |
| Supply voltage | 5 V DC (backplane) |
| Bus current | 750 mA @ 5 V DC |
| Protection rating | IP20 |
| Dimensions (H×W×D) | 250 × 40.34 × 103.85 mm |
| Weight | 0.3 kg |
Pain Point: Ring Integrity and Bus Loading
A daisy-chain ring fails at its weakest link. The 140CRP31200 draws 750 mA at 5 V DC from the backplane, so confirm your power budget before adding modules to the same rack. Because the ring is serial, one bad cable or unpowered drop can take the whole segment down. Inspect connectors and slave status LEDs first when faults appear.
Pain Point: Matching Master to Slave
This module pairs with the 140CRA31200 slave. Mixing it with a different slave revision is a common cause of commissioning delays. Verify the exact slave part number on each drop before you order.
Pain Point: Cabinet Environment
The IP20 rating means the module belongs inside a clean enclosure. Keep ambient conditions within the cabinet design limits and protect it from dust, moisture and conductive debris. Schedule periodic inspection of the ring cabling and backplane seating.
Integration Note
Wiring into an Ethernet RIO network may require specific cables or connection hardware. Confirm cable types and any gateway needs with your supplier before installation.
Sourcing the 140CRP31200 Today
Since end of sale in 2018, availability depends on remaining stock. Please verify current lifecycle status and availability with Oil AutoTech before ordering. Share your rack layout and slave count, and the team will confirm fit and dispatch options. Contact Oil AutoTech today for pricing and availability.
Selection Checklist
- Confirm the slave is 140CRA31200.
- Confirm one free Quantum slot.
- Confirm backplane current headroom for 750 mA at 5 V DC.
- Confirm cabinet space for 250 × 40.34 × 103.85 mm.
Spares when you need them — fast dispatch, worldwide.
