System Board 6598

MAXREFDES165# Four-Channel IO-Link Master



The MAXREFDES165# is a fully IO-Link®-compliant, 4-port IO-Link master reference design. This design uses the TMG TE IO-Link master stack and is both an IO-Link master reference design and a development and test system for IO-Link sensors/actuators. Four IO-Link ports allow for simultaneous testing of up to four different sensors (or actuators). The reference design has four robust female M12 connectors—the most common connector used for IO-Link—and ships with an IO-Link cable for connecting quickly to IO-Link compatible sensors and actuators. An AC-to-DC (24VDC/1A) power supply is capable of providing at least 250mA to each port simultaneously, and more when fewer ports are used. A USB 2.0 Type B connector allows for quick connectivity to a Windows® PC.

Features

  • Fully IO-Link Version 1.1 compliant
  • TMG TE IO-Link master stack
  • Easy-to-Use IO-Link Device Tool V5 from TMG
  • 4 IO-Link master ports
  • Ships with all required cables
  • Field-update programmable

Competitive Advantages

  • Simultaneous four-port operation
  • Easy-to-use GUI
  • IODD import

Applications

  • Control and automation
  • IO-Link sensors
  • IO-Link actuators
MAXREFDES165# System Board Enlarge+


IO-Link is the first open, field-bus agnostic, low-cost, point-to-point serial communication protocol for communicating with sensors and actuators. 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 through a gateway, quickly making it the de facto standard for universal communication with smart sensors and actuators.

IO-Link is a single-drop digital communication interface (SDCI), which means it supports only one sensor or actuator per port. The three-wire protocol is also backward compatible with binary sensors and actuators that use standard inputs and outputs. IO-Link device descriptor (IODD) files completely define the device and eliminate manual parameterization.

The MAXREFDES165# design utilizes two MAX14819 dual-channel Maxim Integrated IO-Link master transceivers, an on-board digital isolator, the efficient industrial MAX15062AATA+ step-down converter, a FTDI USB-to-SPI interface, and a STMicroelectronics® 32-bit Arm® Cortex®-M4 microcontroller (STM32F4) utilizing TMG TE’s IO-Link Device Tool software and TMG TE’s IO-Link master stack. Figure 1 is the system block diagram of the MAXREFDES165# design.


MAXREFDES165# System Board Enlarge+

Figure 1. The MAXREFDES165# Reference Design Block Diagram.

Detailed Description of Hardware

The MAXREFDES165# IO-Link master comprises four main blocks:

  • Two dual-channel MAX14819 IO-Link master transceivers
  • A MAX14931 digital isolator for the SPI interface
  • A microcontroller
  • A USB connection (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 x 10mm, 64-pin LQFP package provides system control. A USB port is implemented using the FTDI FT2232 USB-to-SPI transceiver and driver. An on-board MAX15062A high-voltage, synchronous step-down converter provides power to the STM32F4 microcontroller from the 24V supply.

A digital isolator, the four-channel MAX14931F protects 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 this isolator.

A stand-alone SPI header (J3) is available on the MAXREFDES165# to allow the user to bypass the USB interface and communicate directly 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 four IO-Link interface ports and at the power supply inputs provide surge and reverse-polarity protection for each master transceiver on the MAXREFDES165#.

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 MAXREFDES165# reference design.

MAXREFDES165 box contents.Figure 2. MAXREFDES165# box contents.

The MAXREFDES165# box contents include the following:

  • MAXREFDES165# four-port IO-Link master
    • TMG IO-Link Master Stack
    • AC-to-DC 24V/1A (min) output power converter
    • One IO-Link cable
    • USB 2.0 Type B cable
  • Necessary downloadable software includes:
    • TMG IO-Link Device Tool V5 Software
    • FTDI® driver

Note: Download the files from the Design Resources tab.

The MAXREFDES165# typically consumes 30mA from the 24V supply at 25°C with no sensors attached.

MAXREFDES165 hardwareFigure 3. MAXREFDES165# hardware.

Detailed Description of Software

TMG IO-Link Device Tool Windows-compatible software features IODD file import capability, connects to a PC through USB, and is available to download from the Design Resources tab of the MAXREFDES165# webpage. The TMG IO-Link Device Tool software is shown in Figure 4, and a complete step-by-step Quick Start guide is also downloadable from the Design Resources tab.

Note: The MAX14819 can be configured to operate with a UART interface (within the microcontroller) or by using the integrated framers on the IC. The default stack that ships with the MAXREFDES165# is the UART version. If you require the Framer version please contact the factory.

MAXREFDES165 TMG IO-Link Device ToolFigure 4. MAXREFDES165# TMG IO-Link Device Tool

The TMG TE IO-Link master stack ships preprogrammed inside the MAXREFDES165# hardware with a perpetual license. TMG contact information is as follows:

TMG Technologie Management Gruppe
Technologie und Engineering GmbH
Zur Gießerei 10
76227 Karlsruhe
Phone +49 721 82 806 0
Fax +49 721 82 806 10

Quick Start Guide

Required Equipment:
Supplied by Maxim:

  • MAXREFDES165# (box contents)
  • MAXREFDES165# four-port IO-Link master
  • TMG IO-Link Device Tool software (Note 1)
  • AC-to-DC 24V/1A output power converter
  • One IO-Link cable
  • 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 MAXREFDES165# Quick Start Guide

IO-Link Compliance Report

The MAXREFDES165# 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: MAXREFDES165# Four-Channel IO-Link Master Test Report

IO-Link is a registered trademark of Profibus User Organization (PNO).
Arm is a registered trademark and registered service mark of Arm Limited.
Cortex is a registered trademark of Arm Limited.
Windows is a registered trademark and registered service mark of Microsoft Corp.
FTDI is a registered trademark and service mark of Future Technology Devices International Limited.
STMicroelectronics is a registered trademark of STMicroelectronics, Inc.

Quick Start Guide

Required Equipment:
Supplied by Maxim:

  • MAXREFDES165# (box contents)
  • MAXREFDES165# four-port IO-Link master
  • TMG IO-Link Device Tool software (Note 1)
  • AC-to-DC 24V/1A output power converter
  • One IO-Link cable
  • 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 MAXREFDES165# Quick Start Guide

 
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Temperature:

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

MAXREFDES36
MAXREFDES36#: IO-Link 16-Channel Digital Input Hub