System Board 6423

MAXREFDES145#: 8-Channel IO-Link Master



The MAXREFDES145# is a fully IO-Link®-compliant, 8-port IO-Link master reference design. This design uses TEConcept's IO-Link master stack and is both an IO-Link master reference design as well as an IO-Link sensor/actuator development and test system. Eight IO-Link ports allow for simultaneous testing of up to eight different sensors (or actuators). The reference design has eight robust female M12 connectors, the most common connector used for IO-Link, and ships with two IO-Link cables to quickly connect to IO-Link compatible sensors and actuators. An AC-to-DC (24VDC/1A) power-supply cube is capable of providing at least 125mA simultaneously to each port and more when fewer ports are unused. A USB 2.0 Type B connector allows for quick connectivity to a Windows® PC.

The easy-to-use TEConcept Control Tool (CT) GUI software with IODD file import capability makes the MAXREFDES145# a must-have for any company or engineer serious about developing IO-Link products.


MAXREFDES145# System Board Enlarge+

Features

  • Fully IO-Link Version 1.1 Compliant
  • TEConcept IO-Link Master Stack
  • Easy-to-Use TEConcept TC Tool
  • 8 IO-Link Master Ports
  • Ships with All Cables Needed
  • Field Update Programmable

Competitive Advantages

  • Simultaneous 8-Port Operation
  • Easy-to-Use GUI
  • IODD Import

Applications

  • Control and Automation
  • IO-Link Sensors
  • IO-Link Actuators

Introduction

IO-Link is the first open, field bus agnostic, low-cost, point-to-point serial communication protocol, used for communicating with sensors and actuators, that has been adopted as an international standard (IEC 61131-9). IO-Link standardizes interoperability of industrial equipment from all over the world. IO-Link can function directly from the PLC or can be converted from all standard field busses to IO-Link through a gateway, quickly making it the defacto standard for universally communicating with smart sensors and actuators.

IO-Link is a single-drop digital communication interface (SDCI), which means there can only be one sensor or actuator per port. The 3-wire protocol is also backwards compatible with binary sensors and actuators that use standard input output (SIO). IO-Link device descriptor (IODD) files completely define the device and eliminate manual parameterization.

The MAXREFDES145# design utilizes four MAX14819 dual-channel Maxim Integrated IO-Link master transceivers, two on-board digital isolators, the efficient industrial MAX15062B step-down converter, an FTDI USB-to-SPI interface and an STMicroelectronics 32-bit ARM Cortex® M4 microcontroller (STM32F4) utilizing TEConcept’s CT Tool software and IO-Link master stack. Figure 1 shows the system block diagram.

MAXREFDES145# System Board Enlarge+

Figure 1. The MAXREFDES145# reference design block diagram.

Detailed Description of Hardware

The MAXREFDES145# IO-Link master consists of 4 main blocks: four dual-channel MAX14819 IO-Link master transceivers, two digital isolators for the SPI interface, a microcontroller, and a USB connection as shown in Figure 1.

The MAX14819 IO-Link master transceivers are IO-Link version 1.1.2 physical layer compliant. These transceivers feature integrated 5V linear regulators, configurable C/Q outputs (push-pull, high-side, or low-side) with configurable output drive capability, auxiliary digital inputs, and reverse-polarity/short-circuit protection.

An STM32F4 ARM Cortex M4 microcontroller in a 10mm × 10mm, 64-pin LQFP package provides system control. A universal serial bus (USB) port is implemented using the FTDI FT2232 USB-to-SPI transceiver and driver. An on-board MAX15062B high-voltage, synchronous step-down converter provides power to the STM32F4 microcontroller from the 24V supply.

Two digital isolators, the 4-channel MAX14931F and the 2-channel MAX12931B, protect the USB interface from high-voltage and large ground differentials that can occur when the MAX14819 master transceivers are connected to IO-Link peripherals. All communication between the USB port/PC and the SMT32F4 microcontroller passes through these isolators.

A stand-alone SPI header (J3) is available on the MAXREFDES145# to allow the user to bypass the USB interface and directly communicate with the STM32F4 using an external SPI master. J3 is connected to the isolated side of the board and all digital communication from the external master to the STM32F4 goes through the isolators. An external 3.3V logic supply to power the isolators is required when using J3.

High-level protection transient voltage suppressor (TVS) diodes at each of the eight IO-Link interface ports and at the power supply inputs provide surge and reverse-polarity protection for each master transceiver on the MAXREFDES145#.

Additionally, power and status LEDs (for each channel) provide quick visual confirmation that the board is working and communicating.

Figure 2 shows the box contents for the MAXREFDES145# reference design.

Figure 2. MAXREFDES145# box contents.

The MAXREFDES145# box contents are:

  • MAXREFDES145# 8-Port IO-Link Master
  • TEConcept IO-Link Control Tool (CT) Software (Note1)
  • AC-to-DC 24V/3A (min) Output Power Converter
  • Two IO-Link cables
  • USB 2.0 Type B cable

Necessary downloadable software includes:

Note 1: Download files from the Design Resources tab

Figure 3 shows the MAXREFDES145# system connected to a laptop running TEConcept's CT Tool. The MAXREFDES145# typically consumes 24mA from the 24V supply at 25°C with no sensors attached.

Figure 3. MAXREFDES145# system connected and running.

Detailed Description of Software

TEConcept CT Windows-compatible GUI software features IODD file import capability, connects to a PC through USB, and is available to download from the Design Resources tab. of the MAXREFDES145# webpage. The TEConcept CT software is shown in Figure 4 and a complete step-by-step Quick Start guide is also downloadable from the Design Resources tab.

Figure 4. MAXREFDES145# TEConcept CT tool.

The TEConcept IO-Link master stack ships preprogrammed inside the MAXREFDES145# hardware with an infinite time license displayed by the TEConcept CT software.

TEConcept GMbH Contact Information
BTEConcept GmbH
Wentzingerstr. 21
D-79106 Freiburg
Tel. +49 761 21443640
Fax +49 761 21443631
Email: info@teconcept.de
www.teconcept.de/Contact.php

Quick Start

Required equipment:
Supplied by Maxim:

  • MAXREFDES145# (box contents)
  • MAXREFDES145# 8-port IO-Link master
  • TEConcept IO-Link Control Tool (CT) software (Note 1)
  • AC-to-DC 24V/3A output power converter
  • Two IO-Link cables
  • USB 2.0 Type B cable

User-supplied:

  • Windows 7, Windows 8, or Windows 10 PC with a USB port
  • IO-Link sensor or IO-Link actuator (Note 2)

Note 1: Download files from the Design Resources tab.
Note 2: Maxim Integrated offers multiple IO-Link sensor reference designs for immediate operation with the IO-Link master. Refer to MAXREFDES23#, MAXREFDES27#, MAXREFDES36#, and MAXREFDES42#.

Download, read, and carefully follow each step in the MAXREFDES145# Quick Start Guide.

IO-Link Compliance Report

The MAXREFDES145# is a fully compliant IO-Link version 1.1 master according to the following test report. It was tested with golden device GD000010. See the test report for details: MAXREFDES145# 8-Port IO-Link Master Test Report

Reference

  1. IO-Link System Description 2013 by IO-Link Company Community. Page 3, Preface. http://www.io-link.com/share/Downloads/At-a-glance/IO-Link_System_Description_engl_2013.pdf

IO-Link is a registered trademark of Profibus User Organization (PNO).
ARM and Cortex are registered trademarks and ARM is a registered service mark of ARM Limited.
Windows is a registered trademark and registered service mark of Microsoft Corp.

Quick Start

Required equipment:
Supplied by Maxim:

  • MAXREFDES145# (box contents)
  • MAXREFDES145# 8-port IO-Link master
  • TEConcept IO-Link Control Tool (CT) software (Note 1)
  • AC-to-DC 24V/3A output power converter
  • Two IO-Link cables
  • USB 2.0 Type B cable

User-supplied:

  • Windows 7, Windows 8, or Windows 10 PC with a USB port
  • IO-Link sensor or IO-Link actuator (Note 2)

Note 1: Download files from the Design Resources tab.
Note 2: Maxim Integrated offers multiple IO-Link sensor reference designs for immediate operation with the IO-Link master. Refer to MAXREFDES23#, MAXREFDES27#, MAXREFDES36#, and MAXREFDES42#.

Download, read, and carefully follow each step in the MAXREFDES145# Quick Start Guide.

 
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MAX14819
Dual IO-Link Master Transceiver with Integrated Framers and L+ Supply Controllers

  • Low-Power Architecture
  • Integrated IO-Link Framer Eliminates Need for External UARTs
  • High Configurability and Integration Reduce SKUs

MAX12931
Two-Channel, Low-Power, 3kVRMS and 5kVRMS Digital Isolators

  • Robust Galvanic Isolation of Digital Signals
  • Options to Support a Broad Range of Applications
  • Low Power Consumption

MAX14931
4-Channel, 1kVRMS, 2.75kVRMS, and 3.75kVRMS Digital Isolators

  • Robust Galvanic Isolation of Digital Signals
  • Interfaces Directly with Most Micros and FPGAs
  • Many Options Support Broad Applications

MAX15062
60V, 300mA, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converters

  • Eliminates External Components and Reduces Total Cost
  • Reduces Number of DC-DC Regulators to Stock
  • Reduces Power Dissipation

MAX15006
40V, Ultra-Low Quiescent-Current Linear Regulators in 6-Pin TDFN/8-Pin SO

  • Wide Operating Input Voltage Range (4V to 40V)
  • Guaranteed 50mA Output Current
  • Low Quiescent Current


Dual IO-Link Master Transceiver: MAX14819 Demo
4:48 min
June 2017