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#26 in Industrial Control (B2B)
PUSR DR302 — Modbus RTU to Modbus TCP Gateway, DIN Rail
Industrial Control (B2B)

PUSR DR302 — Modbus RTU to Modbus TCP Gateway, DIN Rail

4.5(44 reviews)

$39.00reference price

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Best for

Anyone who needs to connect existing Modbus RTU (RS485) equipment to an Ethernet/TCP network and wants a cheaper DIN-rail option than the Waveshare gateways in this ranking.

  • Modbus RTU/TCP
  • RS485
  • DIN rail

What is it and what's it for?

It's a translator between two versions of the Modbus protocol: it takes the RS485 signal (Modbus RTU) from an old or budget industrial device and converts it to Modbus TCP so you can read it from a normal Ethernet network, without running RS485 cable all the way to the PC or central PLC.

Real-world use cases

At home

You have an industrial meter or sensor that only speaks RS485 and want to monitor it from software on your networked PC — this gateway acts as the bridge without you having to run a long serial cable.

In a business or workshop

A small plant with several scattered RS485 devices can centralize reading all of them into a single Ethernet-connected SCADA software, using one of these gateways per section of RS485 equipment.

How to avoid buying the wrong one

  • It's Modbus RTU to Modbus TCP — it doesn't work for other serial protocols besides Modbus over RS485.
  • Has considerably fewer reviews (44) than the Waveshare gateways in this ranking, though it's an "Amazon's Choice" in its category.
  • Mounts on a DIN rail, same as the rest of the industrial components in this ranking — no need to improvise the mounting.

The investment takeaway

It's the cheapest option in this ranking for the same job a Waveshare gateway does — worth it if price is the deciding factor and you're not concerned about having less review history backing the brand.

PUSR DR302 — Modbus RTU to Modbus TCP Gateway, DIN Rail

$39.00reference price

See current price on Amazon

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