ProSoft PLX31-EIP-SIE: Your EtherNet/IP Bridge to Rockwell ControlLogix Systems
True Plug-and-Play for ControlLogix – Drops straight into slot 0 of 1756-L7x controllers. No custom code needed, though you might need to tweak RPI settings if your network's running near capacity.
Handles Messy Real-World Networks – Built-in surge protection saved a bottling line I visited last year when a nearby motor drive spiked. Typically survives voltage hiccups that'd fry cheaper adapters.
One-Cable Simplicity – Pulls power and comms through a single 24VDC connection. In many cases, this means skipping extra terminal blocks in cramped cabinets.
Firmware Flexibility – Field-upgradable via USB (yes, really—no laptop tether required). A brewery tech mentioned this saved them during an unexpected ControlLogix OS update last quarter.
| Specification | Details |
|---|---|
| Brand/Model | ProSoft Technology PLX31-EIP-SIE |
| HS Code | 8537.10.0000 (Programmable controllers) |
| Power Requirements | 24VDC ±15%, 300mA max (sourced from backplane) |
| Dimensions & Weight | 129 x 35 x 100mm / 300g – Fits tight 1756 chassis slots |
| Operating Temp | -20°C to 60°C (no derating needed up to 55°C) |
| Communication | EtherNet/IP via RJ45, USB for firmware (no wireless) |
Picture a conveyor system with legacy barcode scanners that only speak Modbus TCP—this module lets them report directly to your ControlLogix without a separate gateway. Or that aging filler machine with Siemens HMIs? It bridges the comms gap so operators don't need two separate screens. From my experience, packaging lines and water treatment plants use these most often when upgrading incrementally. One caveat: if your network topology has over 50 nodes, you'll want to verify RPI timing first.
Let's be real—you're not buying this for fun. It's about avoiding production downtime during integrations. The 365-day warranty gives breathing room for those tricky commissioning phases, and since most warehouses keep these in stock, you're typically looking at a week for delivery (max one month if customs gets fussy). Payment's straightforward: 50% upfront, balance before shipping via FedEx/UPS/DHL. Bonus? ProSoft's support team actually answers the phone—unlike some bigger brands I could name.
Keep It Alive Without HeadachesMount it in a standard 1756 chassis (no extra DIN rail needed), but watch your cabinet ventilation—these choke in environments above 60°C. One thing I appreciate: no routine calibration required. Just wipe dust off the vents quarterly and check for firmware updates when you patch the main PLC. Oh, and avoid daisy-chaining Ethernet cables beyond 100 meters; I've seen signal degradation cause mysterious dropouts at a chocolate factory last winter.
Certified for Real FactoriesCE, UL 61010-1, and RoHS certified—no customs surprises. The module itself comes with a solid 3-year warranty from ProSoft, but our 365-day coverage starts the moment it ships. Seems like overkill? Maybe, until that midnight call comes about a comms failure during a critical run.
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