Choosing a fieldbus gateway for an industrial network usually comes down to two questions: what protocols do you need to bridge, and how much money can you spend? Two options illustrate the trade-off. The Burkert 00307390 / ME43 is a used Industrial Ethernet fieldbus gateway priced at $249.99. The Moxa 4101-MB-PBS is an opened Modbus-to-Profibus slave gateway with one port and a 230.4 Kbps rate, priced at $869.00. Both are ready for a control network, but they solve different problems.
Quick Verdict
If you need a general-purpose Industrial Ethernet gateway and are comfortable with a used working pull, the Burkert is the lower-cost pick. If your network specifically needs Modbus-to-Profibus slave conversion, the Moxa is the protocol-targeted choice. The two are not drop-in equivalents, so your protocol requirement is the deciding factor.
At a Glance
| Product | Price | Condition | Gateway Role | Price Indicator |
|---|---|---|---|---|
| Burkert 00307390 / ME43 | $249.99 | Used | Industrial Ethernet fieldbus gateway | |
| Moxa 4101-MB-PBS | $869.00 | Open box | Modbus-to-Profibus slave gateway, 1 port, 230.4 Kbps |
Where Each Product Wins
- The Burkert wins on cost. It lists for $619.01 less than the Moxa, making it the clear pick when budget drives the decision.
- The Moxa wins on protocol clarity. Its description names a specific Modbus-to-Profibus slave conversion, so for that exact network path it is the more direct match.
Product Notes
Burkert 00307390 / ME43
The Burkert 00307390 / ME43 is an Industrial Ethernet fieldbus gateway in used condition. If your project needs a lower-cost entry into an Ethernet-based fieldbus network, this product is the one to weigh. It is described as a working pull, meaning the unit was removed from service and is sold as-is in the photo. The biggest limitation is that used condition: you are buying a pull, not a fresh unit, so lifecycle expectations should be adjusted accordingly. For a line that runs on a strict budget, though, the Burkert gives you the essential gateway function without paying the higher price on the Moxa. Its role is clearly Industrial Ethernet, so make sure your wider network aligns with that before committing to the lower end of the price spread.
Moxa 4101-MB-PBS
The Moxa 4101-MB-PBS is an open-box fieldbus gateway built specifically for Modbus-to-Profibus slave conversion. The description spells out the single port and 230.4 Kbps rate, plus an operating range of 0 to 55°C, so you know exactly what the unit is built to do. If your network needs that precise protocol bridge, this gateway is the one that names it directly. The limitation is the price: it sits at the higher end of the spread, so the Modbus-to-Profibus feature needs to be a genuine requirement for the extra cost to make sense. In open-box condition, the part has been opened but remains a specific, named gateway for the stated protocol. For a targeted conversion need, the Moxa's explicit feature set is the clearer fit.
Final Choice by Use Case
Choose the Burkert 00307390 / ME43 for a lower-priced Industrial Ethernet fieldbus gateway when your network is Ethernet-based and a used working pull is acceptable. Choose the Moxa 4101-MB-PBS when you need Modbus-to-Profibus slave conversion on a single port with a 230.4 Kbps link. The core tension is price versus protocol fit: pay less for a general Ethernet gateway, or pay more for a protocol-specific Moxa.
