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Industrial Ethernet to Serial Device Servers


Item# OM-ES-522

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-9 $647.78
10-24 $615.39
25-49 $602.44
50-99 $576.52
100-199 $563.57
200+ $550.61

In stock

Lead Time (If not in stock): 8 weeks
Industrial Ethernet to Serial Device Servers OM-ES-522 OM-ES-522
  • 1 Serial Port (OM-ES-511) or 2 Serial Ports (OM-ES-522) Software Selectable as RS232, RS422/485 Full Duplex, or RS485 Half Duplex
  • State-of-the-Art Autogating for Trouble Free RS485 Half Duplex Flow Control
  • Maximum Baud Rate 1,000,000 (1 MegaBaud), Custom Baud Rates
  • 10/100Base TX Ethernet Port

OM-ES-522 Model Options

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Number of Ports
Input Type
Output Type
Additional Features


OM-ES-511 (1 serial port) and OM-ES-522 (2 serial ports) are software selectable as RS232, RS422/485 full duplex or RS422 half duplex and have removable screw terminals blocks for easy wiring, a slim ‘end on’ case and integral DIN rail mount. OM-ES-511 and OM-ES-522 have an operating temperature range of -30 to 80°C (-22 to 176°F) and with 5 to 30 Vdc dual input reverse polarity protected power supply making them perfect for industrial applications. Data transfer rates up to 1,000,000 baud, coupled with 1Mbit/s line drivers deliver uncompromising performance. OM-ES-511 and OM-ES-522 provide simple instant networked serial ports in demanding environments. Serial Port Tunneling allows serial cable replacement over any distance, no software required. Suitable to be wired into existing power and network infrastructure or can be used with a separate power supply.

Users of the Windows® Operating System Our software drivers give you local COM ports, allowing you to retain your existing software applications and connect to your devices over the network. COM Port can be assigned from COM 1 to COM 255 and the ethernet to serial device remembers your COM port assignment on reboots.

Web Interface Users (Linux®/Android™) A web interface allows secure configuration and control of the serial ports over a local network or the internet using any browser. You can access the device via TCP/ IP sockets from any networked device like a tablet for Android, PC or phone.

OM-ES-511 and OM-ES-522 Factory Floor Applications Factory floors can be harsh environments. Extreme temperatures can be generated in the manufacturing process, machinery can be noisy and dangerous and space is a premium. However engineers still need to be able to access and maintain equipment safely and without downtime.

As factories expand and modernize older equipment and remote devices need to be networked, but cabling can be expensive and impractical, especially over larger areas.

Once your serial equipment is connected to a OM-ES-511 or OM-ES-522 Ethernet to Serial device you have the option of accessing it over a local network or connecting it to the internet. The devices can be fitted in areas where it would be dangerous for workers to monitor while the factory line is in operation.

Manufacturing process and performance across a large site can be monitored and potential faults detected before they cause serious downtime costs. Use two devices back to back for serial tunnelling over Ethernet, for when you need to extend the reach of your serial cables.
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