Two gateway modules, one job: bridge fieldbus traffic onto an Ethernet network. The Softing FG-100-PB and the Invertek OPT-2-ETHEG-IN both sit in that industrial networking fieldbus space, but the right one for your cabinet depends on which fieldbus side you are connecting and how comfortable you are with condition trade-offs. Use this head-to-head to get to a decision without sorting through protocol sheets.
Quick verdict
The Softing FG-100-PB is the more direct fit when you need a dedicated gateway and are willing to accept an open-box unit. The Invertek OPT-2-ETHEG-IN is the cleaner pick when you want a new module in a PLC Ethernet form. The table below lays out the price spread, condition, and protocol type side by side.
At a glance
| Consideration | Softing FG-100-PB | Invertek OPT-2-ETHEG-IN |
|---|---|---|
| Listed price | USD 233.89 | USD 152.98 |
| Price position | ||
| Condition | New - Open box | New |
| Protocol / type | PROFIBUS/Ethernet gateway | Ethernet/IP gateway module |
Where each product wins
The Softing FG-100-PB wins when the fieldbus protocol in your cabinet is the one it names in its title. The Invertek OPT-2-ETHEG-IN wins when you want a new PLC Ethernet module and prefer to avoid the open-box condition.
Product notes
Softing FG-100-PB
The Softing FG-100-PB enters this comparison as a single-channel PROFIBUS/Ethernet gateway. If your existing fieldbus segment is PROFIBUS, this is the product that names that protocol directly, so the compatibility path is straightforward. The gateway is listed as New - Open box, which matters if you need a factory-fresh seal. On the limitation side, the open-box condition and the single-channel design mean you should confirm that one channel is enough for the segment you are connecting; if you need a second fieldbus channel, you would need to plan for additional hardware. The single channel also keeps the setup clearly scoped.
Invertek OPT-2-ETHEG-IN
The Invertek OPT-2-ETHEG-IN is listed as a new Ethernet/IP gateway module in a PLC Ethernet module form. That combination makes it a comfortable fit for applications already working with Ethernet/IP. The new condition removes the open-box question, and the module carries a specific OPT-2 model designation. The main limitation is scope: the listing note says items include only what is shown in the photos, so the module is what the purchase centers on. Installation and correct application are left to a qualified person, so include that in your project plan. That matters when planning the rest of the cabinet.
Final choice by use case
Pick the Softing FG-100-PB when the fieldbus side you need to reach is the one named in its title and one channel is enough; accept the open-box condition and the higher listed price as part of that trade-off. Pick the Invertek OPT-2-ETHEG-IN when you want a new module, a PLC Ethernet form, and the lower end of the price spread. If the protocol direction is still open, let the fieldbus devices you already own be the tie-breaker: the gateway you choose should speak the same language they do.
