8 Port IO-Link Master Reference Design


Design files


PLC applications requiring fast timing and fast cycle time can now be realized using this reference design which implements, an eight-port IO-Link master. It can be used to build a remote IO gateway to connect to OPC UA, Profinet, EtherCAT or Ethernet IP. A PRU-based frame handler enables a very flexible way of timing and time synchronization. This design helps build a very universal and scaleable IO-Link master.

  • Eight IO-link ports
  • Supports COM1, COM2, COM3
  • Supports 400-µs cycle time
  • All ports overcurrent protected and limited
  • PRU Frame handler enables flexible timing
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.


Reference design overview and verified performance test data

TIDT258.PDF (132 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Detailed overview of design layout for component placement

TIDRWQ2.ZIP (4189 K)

Files used for 3D models or 2D drawings of IC components

TIDCES4.ZIP (1112 K)

Design file that contains information on physical board layer of design PCB

TIDRWQ1.ZIP (1732 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Analog current-sense amplifiers with integrated shunt resistor

INA25380V, bi-directional, precision current sense amp w/pwm rejection & int. shunt resistor

Data sheet: PDF | HTML
Buck converters (integrated switch)

LM51653V-65V, 150mA Synchronous Buck Converter With Ultra-Low IQ

Data sheet: PDF | HTML
High-side switches

TPS27416036-V, 160-mΩ, 1.35-A, 4-ch, Industrial high-side switch with adjustable current limit

Data sheet: PDF
High-side switches

TPS4H160-Q140-V, 160-mΩ, 4-ch automotive smart high-side switch with adjustable current limit

Data sheet: PDF | HTML
IO-Link & digital I/Os

TIOL111IO-Link device transceiver with integrated surge protection

Data sheet: PDF | HTML
LED display drivers

TLC5928216-channel constant current LED driver with 4-channel Grouped delay

Data sheet: PDF

Technical documentation

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Type Title Date
* Design guide Eight Port IO-Link® Master Reference Design (Rev. C) PDF | HTML Nov. 16, 2021
Test report IO-Link Master Protocol Test Report Feb. 01, 2022
Application note Adding Real-Time Communication to Linux (Rev. A) May 07, 2021
Application note Programmable Logic Controllers — Security Threats and Solutions PDF | HTML Sep. 13, 2019
Application note Flexible Timing Configuration with IO-Link Master Frame Handler Mar. 26, 2019
Application note Advanced High-Side Switch With Dynamic Current Limit for IO-Link Master Jan. 07, 2019

Related design resources

Hardware development

TMDSIDK437X AM437x/AMIC120 Industrial Development Kit (IDK)

Support & training

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