Part#: 530E


Ethernet Modbus TCP to 16 Isolated Inputs / 16 Open-Collector Outputs



Monitor and control 16 optically isolated inputs and 16 open-collector outputs via any Ethernet connection with the SeaI/O-530E. Inputs can range from 5-30VDC, while the open-collector outputs provide high current sinking over a large operating voltage. Each open-collector output circuit includes a flyback diode for protection when interfacing highly inductive loads, such as DC motors. Inputs are grouped into four-bit segments. Each group shares a common for easy wiring via removable 3.5mm terminal blocks. Outputs are grouped in eight-bit ports which share high and low voltage inputs.

The SeaI/O-530E is powered from your 9-30VDC source, or select from a variety of Sealevel power supply options.

Communicate with the SeaI/O-530E using industry standard Modbus TCP protocol or use the Sealevel SeaMAX API software libraries from your application program. Sealevel’s SeaMAX software drivers and utilities make installation and operation easy using Microsoft Windows and Linux operating systems.

The Sealevel Modbus Connect app for iOS allows you to access the registers, coils and discrete I/O of your Sealevel Modbus devices and is available on the App Store. Use the app to remotely access I/O in the field or for testing and troubleshooting during application development.

Expand your I/O network with SeaI/O N-series products. SeaI/O modules are available with Reed and Form C relays, optically isolated inputs, TTL interfaces, A/D and D/A functionality. Up to 246 additional expansion modules can be added using convenient pass-through connectors.

Get a jumpstart on your digital I/O development with The Digital I/O Handbook that will provide helpful information that you will use again and again. Check out Chapter 1 for an overview of logic principles.

Additional information

Weight 2.3000 lbs
Dimensions 7.5 x 5.1 x 1.3 in

Number of Inputs/Outputs


Extended Temperature

Humidity Range

Input Isolation

Input Range

Input Impedance

Host Interface(s)

Digital I/O


Output Dissipation

Operating Temperature

Output Isolation

Output Power

Output Type

Output Voltage

# of Ports

Power Requirement

RoHS Compliant

Storage Temperature

  • • 10/100BaseT Ethernet Modbus TCP interface
  • • 16 optically isolated inputs
  • • 16 open collector outputs
  • • Removable screw terminals simplify field wiring
  • • Status indicator LEDs for Communication, Fault, and Power
  • • Input power via terminal block or modular connector
  • • Optional DIN rail or table mount
  • • Sealevel SeaMAX software supports Microsoft Windows and Linux operating systems

Windows Software

Software: SeaMAX - Windows

Linux Software

Software: SeaMAX - Linux

1 review for SeaI/O-530E

  1. Rated 5 out of 5

    C. Welch

    The 530E is a reliable and easily integrated interface
    We are using the 530E as an Ethernet interface to mechanical RF switches. Currently in development stage, it plays well in the NI LabView environment. We intend to stress its physical limits as it will be mounted in a weatherproof box, but subject to outdoor temp and humidity.

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