Gateways and Routers

Industrial gateways and routers connect networks that don't natively speak the same language — Modbus to EtherNet/IP, Profibus to Profinet, serial to TCP/IP — and provide remote access via cellular or VPN. Enicstra stocks gateway devices for control system integration and replacement of end-of-life network hardware.

Inventory includes Anybus protocol converters (HMS), Moxa serial-to-Ethernet gateways and industrial routers, Hilscher netTAP and netSCOUT devices, Red Lion gateways and HMI-with-protocol-conversion units, and Phoenix Contact cellular routers. We focus on the obsolete and end-of-life models often impossible to source through new channels, alongside current-production hardware. Every device is bench-tested before shipment and ships with our 12-month functional warranty.

If the protocol pair you need isn't shown — or if you're replacing a legacy gateway no longer offered by the manufacturer — send us the part number and the protocols on both sides of the conversion. Most quote inquiries reply within 1–2 business days.

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Buying guide

Choosing Gateways and Routers components

Gateway and router selection comes down to two questions: what protocols are on each side of the conversion, and how much throughput does the application demand. A Modbus-to-EtherNet/IP gateway sized for a single inverter won't handle the I/O density of a 500-point Profibus network.

Specifications to confirm before ordering:

Source-side protocol (Modbus RTU/TCP, Profibus, EtherNet/IP, EtherCAT, CC-Link, etc.)
Destination-side protocol
Required throughput — number of mapped I/O points and update rate
Master or slave role on each side
Power supply requirement (24 VDC, 110/230 VAC)
DIN-rail or panel-mount form factor
Configuration method — DIP switches, web GUI, or vendor software
Network security — VPN, firewall, certificate management for routers
Cellular routers: required carrier compatibility, SIM card format

Common gateway pairings:

Legacy PLC to modern SCADA: Modbus RTU to Modbus TCP gateway
Profibus device to EtherNet/IP PLC: Anybus X-gateway
Field device to cloud: cellular router with MQTT publishing
Serial RTU to Ethernet polling: Moxa NPort serial server
Multi-site remote access: VPN-capable router with hardware encryption

Configuration files from one gateway model rarely import directly into a different model — even from the same manufacturer — so plan for re-mapping when replacing a discontinued device.

Related categories Frequently asked questions

Can you supply obsolete Anybus, Moxa, or Hilscher gateways?

Yes — end-of-life protocol gateways from these and similar manufacturers are common requests. Many remain in service on installed automation networks where re-engineering the protocol mapping isn't economical. Submit the part number with a quote request.

Do gateways come pre-configured for my protocols?

Hardware ships in factory-default state. Configuration for your specific protocol mapping, addressing, and data tags is done after installation using the manufacturer's software or web GUI. We can provide vendor documentation and links to configuration tools where available.

What about cellular routers — do I need to provide a SIM?

Yes. Cellular routers ship without active service. You'll need a data SIM from a carrier (often a dedicated IoT/M2M plan) and configuration credentials. The router supports standard SIM formats listed in its specifications.

Are gateways new, surplus, or used?

Most stock is new-old-stock — unused, often in original packaging. Some legacy units come from tested system removals. Each product page lists condition; contact us if it isn't shown.

How quickly do these ship?

In-stock items ship same or next business day from St. Louis. Sourced items typically have a 1–2 business day quote turnaround.