Choosing an industrial networking fieldbus gateway has one core job: translate between a controller and the field devices on the other side of the network. Get the protocol wrong and the module becomes an expensive paperweight. This head-to-head looks at two modules that solve the same problem in different protocol worlds: the Delta Tau ACC-72E, a CAN/PROFIBUS interface card, and the Invertek OPT-2-ETHEG-IN, an Ethernet IP fieldbus gateway module. The deciding question is not which brand sounds better; it is which language your system already speaks.
Quick Verdict
If your floor uses CAN or PROFIBUS, the Delta Tau ACC-72E Fieldbus Gateway CAN/PROFIBUS Interface Card is the direct match. If your control network runs on Ethernet IP, the Invertek OPT-2-ETHEG-IN Ethernet IP Fieldbus Gateway Module is the one to install. The two also sit on different sides of the price spread: the Delta Tau card is listed at $404.99, while the Invertek module is listed at $152.98. Match the protocol first, then let the listed price break a tie.
At a Glance
| Delta Tau ACC-72E | Invertek OPT-2-ETHEG-IN | |
|---|---|---|
| Listed price | $404.99 | $152.98 |
| Condition | Used | New |
| Protocol focus | CAN/PROFIBUS | Ethernet IP |
| Model / MPN | ACC-72E | OPT-2-ETHEG-IN |
| Country of Origin | United States | United Kingdom |
Where Each Product Wins
- Delta Tau ACC-72E is the better fit when the controller and field devices communicate over CAN or PROFIBUS and you need an interface card with that protocol focus.
- Invertek OPT-2-ETHEG-IN is the better fit when the network is Ethernet IP and you want a new module classified for PLC Ethernet use.
Product Notes
Delta Tau ACC-72E Fieldbus Gateway CAN/PROFIBUS Interface Card
The Delta Tau ACC-72E is a fieldbus gateway that is explicitly named for CAN and PROFIBUS. The model and MPN both read ACC-72E, and the condition is listed as used, so expect a pre-owned board. For teams that already support CAN or PROFIBUS, this card is a natural fit because it targets that protocol family directly. The limitation is its protocol focus: this is a CAN/PROFIBUS gateway, and an Ethernet IP application would need a different module. If the plant is shifting toward Ethernet-based control, this card will not bridge that newer network. Stick with it for applications that are firmly in CAN/PROFIBUS territory, where its role as an interface card is clear.
Invertek OPT-2-ETHEG-IN Ethernet IP Fieldbus Gateway Module
The Invertek OPT-2-ETHEG-IN is positioned as an Ethernet IP fieldbus gateway module and is classified as a PLC Ethernet module. It is listed as new, which removes the used-equipment variable from the buying decision. The model and MPN both read OPT-2-ETHEG-IN, so the identity of the module is consistent across the listing. This one makes sense when your controller and end devices are on Ethernet IP and you need a fresh module to insert into that network. The limitation is the mirror image: this is an Ethernet IP module, and a CAN or PROFIBUS device would need a different gateway. Choose it for Ethernet IP applications where you want a new, straightforward PLC Ethernet module.
Final Choice by Use Case
- CAN/PROFIBUS network: Go with the Delta Tau ACC-72E.
- Ethernet IP network: Go with the Invertek OPT-2-ETHEG-IN.
- Mixed network: Use the module that matches the segment you are bridging; the Delta Tau for CAN/PROFIBUS segments and the Invertek for Ethernet IP segments.
