ENET-AIO16-16F Ethernet Multifunction Module — Preliminary

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  • Ethernet 10/100/1000 Multifunction DAQ
  • Sustained sampling speeds up to 1MHz
  • 16-bit or 12-bit resolution A/D converter
  • Flexible, software configured functionality
  • 16 single-ended or 8 differential analog inputs
  • 8 input ranges, 4 unipolar and 4 bipolar, channel-by-channel programmable
  • Autocalibration and filtering onboard for accurate data
  • Four 16-bit analog outputs with 4 factory ranges
  • 16 high-current digital I/O lines
  • TCP packet interface with Windows DLL API wrapper
  • Small, (4″x4″x1.7″) rugged, steel industrial enclosure
  • Designed, made, supported, and manufactured in the USA


  • Industrial operating temperature (-40°C to +80°C)
  • OEM version (board only), features PC/104 size and mounting compatibility
  • DIN rail mounting provision
  • RoHS available, please contact us for ordering information
Last updated on November 2, 2023, 6:31 pm


In Stock


The eNET-AIO16-16F is an ideal solution for adding portable, easy-to-install high-speed analog and digital I/O capabilities to any computer or Ethernet network. The board is plug-and-play auto-detecting.

The eNET-AIO16-16F is a 16-bit resolution A/D board capable of sampling speeds up to 1MHz for its 16 single-ended or 8 differential analog inputs. Each channel can be independently software configured to accept 8 different input ranges. A unique, real-time internal calibration system allows the card to continually compensate for offset/gain errors giving a more accurate reading. Additional features include 16 digital I/O lines and 4 (optional) analog outputs.

This small, compact, multifunction I/O board provides the user with everything needed to start acquiring, measuring, analyzing, and monitoring in a variety of applications. The eNET-AIO16-16F data acquisition board can be used in many current real-world applications such as embedded equipment monitoring, precision PC-based and portable environmental measurements, and mobile data acquisition. The board is designed to be used in rugged industrial environments but is small enough to fit nicely onto any desk or testing station. The board is PC/104 sized (3.550 by 3.775 inches) and ships inside a steel powder-coated enclosure with an anti-skid bottom.


The OEM (board only) version is perfect for a variety of embedded applications.  What makes the OEM option unique is that its PCB size and mounting holes match the PC/104 form factor (without the bus connections).  The board can be added to any PC/104 type stack by connecting it to an available 10/100/1000 base T port typically available on embedded CPU form factors such as EPIC, and PC/104.  It can also be installed using standoffs inside other enclosures or systems.


  • Industrial Automation
  • Embedded OEM
  • Portable DAQ
  • Laboratory
  • Home Automation
  • Kiosks


Available accessories include a broad range of ribbon cables, screw terminal boards, ADC submultiplexer boards for higher channel-count, and more. Special order items such as conformal coating, custom software, and more, are also available.


Because of Ethernet’s ubiquitous nature these boards are supported for use in all operating systems — including Windows, Linux, Unix, iOS, Android, — even Raspberry PI, etc.  The software package includes free Linux and Windows software with sample programs and source code in C# and Delphi for Windows.  Also provided is a graphical setup program in Windows and extensive Ethernet-packet level API documentation.  Third party application support includes a Windows standard DLL API usable from most popular application programs. Embedded OS support includes Windows Embedded Standard, and all applications, operating systems, and PLCs and all other devices capable of TCP/IP communication.


Data Sheets

Drivers and Downloads

Full list of available Downloads: Software Packages, Drivers, Manuals, and other documents

Information about our Free Software packages:

ACCES is proud to provide a full suite of software support with every Data Acquisition product. We are committed to supporting the most popular operating systems and platforms for our customers. Currently we are actively supporting XP -> 10, both 32 & 64 bit, including “Server 2008,” “Embedded,” and “Compact” flavors for all plug-and-play products including PCI, PCI Express, USB, and more. Many products continue to ship with support for additional operating systems such as DOS, Windows 95, 98, Me, NT4, and 2000.


Among the software we deliver with our products are sample programs in a wide variety of programming languages. These samples are used to demonstrate the software interfaces to our products — and many can be used as-is in your production environments, or to test functionality of the devices out-of-the-box. We’re currently actively supporting sample programs in Microsoft Visual C#, Visual Basic, Delphi, and Visual C/C++, with many devices including samples in Borland C/C++ 3.1 for DOS. Additionally we provide National Instruments LabVIEW compatible DLLs and many demonstration VIs for our devices.


Drivers for various operating systems are also provided, including active support for Windows XP -> 10 — all in both 32-bit and 64-bit flavors, and including consumer, server, and embedded varieties — as well as the 2.6 and newer Linux kernels and recent OSX / macOS versions. Many products continue to ship with driver support for Windows 95, 98, Me, NT4, and Windows 2000, but support for these operating systems is considered deprecated.

Setup Programs and Utilites

Our Data Acquisition devices also include a graphical setup utility that walks you through the process of configuring any option jumpers or switches on the device, as well as explaining a little about the various connectors present.

Many devices also include utility programs – little tools to make your use of the device easier, such as EWriter, a program that allows you to read and write data in the user-accessible EEPROM locations on all our USB data acquisitition products; or WinRISC, a “Really Incredibly Simple Communications” terminal program that lets you get started instantly with serial devices.

“Register Level” Documentation

Besides all this software in all these languages and operating systems ACCES has a policy of open and transparent development: none of our lowest-level “register” interfaces are hidden from you — we document every register in every bus card, every command in every serial board, and every usb control transfer in every USB Data Acquisition board. These lowest-level interfaces allow you to develop for our products in ANY operating system or language, regardless of our actively supporting it or having a driver for it. We have customers actively developing in ADA, Android, Python, Java, MATLAB, Solaris, and more, just by referring to our complete low-level interface documentation! And we provide the full source code to all of our drivers, regardless of operating system, to give you an even bigger head start in your own development tasks.

No Fees or Royalties

All of this software is provided at no additional charge, and is licensed under any of a variety of flexible — and royalty free — options. Check out our software license explanation if you’d like more information.

Custom Software

ACCES also offers Custom Software Services for our products. Our prices are unbelievably low, often as inexpensive as free! If you need something tweaked to support your needs, or an entire enterprise application developed from scratch, it is definitely worth your time to inquire with us, first.

Further information about available ACCES Software:

Redistributing Windows Drivers
A list of ACCES drivers and the files that compose them under different versions of Windows, so you can easily redistribute ACCES cards and drivers.

PC Interface

RJ45 Ethernet 10/100/1000 Base-T

Analog Inputs

ADC Type Successive approximation
Resolution 16-bit differential bipolar ADC
Sampling rate 1 Msps aggregate
Number of channels 16 Single-Ended or 8 Differential inputs software control)
Ranges 0-1V, 0-2V, 0-5V, 0-10V, ±1V, ±2V, ±5V, ±10V (software selectable)
Int Nonlinearity Error 0.0011% FS
No Missing Codes 16 bits
Input Impedance 1MO
A/D Start Sources Software Start, Timer Start, External Start, Externally Triggered Timer Start
A/D Start Types Single Channel or Scan
Overvoltage Protection -40 to +40V
Crosstalk -53dB @ 1MHz
-84dB @ 500kHz

Analog Outputs

Number 4
Type: Single-ended
Resolution: 16-bit
Bipolar Ranges: ±5V, ±10V (factory configured)
Unipolar Ranges: 0-5V, 0-10V (factory configured)
Settling Time 20us typical, +/-10V (+/-1LSB at 16 bits)
Output Current max ±10mA per channel

Digital Input / Output Interface

Digital Bits 16, individually direction controllable
Digital Inputs Logic High
Logic Low
0.7V x V_DIO to 5.5V
-0.5V to 0.3V x V_DIO
Digital Outputs Logic High
Logic Low
2.0V (min) 24mA source
0.5V (max) 24mA sink

I/O Interface Connectors

On card 68pin SCSI female .050 Series, Amplimite, PN 1761028-4


Power required, PoE
Power required, External 12VDC to 30VDC @ TBD


Temperature Operating    0°C to   +70°C
-40°C to   +85°C (-T option)
Storage -40°C to +105°C
Humidity 5% to  95% RH, non-condensing
Dimensions PC/104 format 3.550” by 3.775” w/mounting holes

Model Options

-T Extended Temperature Operation (-40° to +85°C)
-I 4-20mA inputs
-Sxx Special configurations (10-50mA inputs, input voltage dividers, conformal coating, etc.)

Regulatory Compliance

This product is designed to be in full compliance with CE requirements.
ModelDescriptionPrice (USD)

Ethernet, 16 Channel, 16 Bit, 1MHz Analog Input, Four Analog Output Module


Ethernet, 16 Channel, 16 Bit, 500kHz Analog Input, Four Analog Output Module


Ethernet, 16 Channel, 16 Bit, 250kHz Analog Input, Four Analog Output Module


Ethernet, 16 Channel, 16 Bit, 1MHz Analog Input Module


Ethernet, 16 Channel, 16 Bit, 500kHz Analog Input Module


Ethernet, 16 Channel, 16 Bit, 250kHz Analog Input Module


Ethernet, 16 Channel, 12 Bit, 500kHz Analog Input, Four Analog Output Module


Ethernet, 16 Channel, 12 Bit, 250kHz Analog Input, Four Analog Output Module


Ethernet, 16 Channel, 12 Bit, 100kHz Analog Input, Four Analog Output Module


Ethernet, 16 Channel, 12 Bit, 500kHz Analog Input Module


Ethernet, 16 Channel, 12 Bit, 250kHz Analog Input Module


Ethernet, 16 Channel, 12 Bit, 100kHz Analog Input Module

Direct Connect
STB-68 KIT Used for mounting the STB-68 to the enclosure of both the USB-AI and Fast USB-DIO Series of USB products.
Includes STB-68, cable and specialized mounting hardware. $89.00
C68MM-1.85 68-pin male to male SCSI ribbon cable, 1.85 inches long. $19
C68MM-1.00 68-pin male to male SCSI ribbon cable, 1.00 inches long. $19
104-HDW-KIT(X) Hardware kit for stacking; includes 4 screws, nuts and standoffs. Specify metric (M) or standard (S). $10
Cabled Connect
C68PS18L 68-pin SCSI 18″ shielded cable $29.00
STB-68 68-pin screw terminal board $69
Mounting Provision
MP104-DIN DIN rail mounting provision $19
Model Options (call for pricing)
-OEM Board only version (no enclosure)
-P External power components and AC/DC adapter
-T Extended operating temperature (-40°C to +85°C)
-ST External power connection via screw terminals (high retention)
-4AO Four analog outputs
-PD Pseudo-differential analog inputs
-RoHS RoHS compliant version
Call 4-20mA or 10-50mA inputs
Call 16 current inputs when factory configured as single-ended
Call 8 current inputs when factory configured as differential
-5U Analog output voltage range of 0-5V only
-10U Analog output voltage range of 0-10V only
-5B Analog output voltage range of ±5V only
-10B Analog output voltage range of ±10V only
Call DIO lines can be configured with pull down resistors
S0x Special configurations (input voltage dividers, conformal coating, etc.)