スマート・ファクトリ：IO-Linkマスタ

The MAX14819/MAX14819A low-power, dual-channel, IO-Link^® master transceiver with sensor/actuator power- supply controllers is fully compliant with the latest IO-Link and binary input standards and test specifications, IEC 61131-2, IEC 61131-9 SDCI, and IO-Link 1.1.3. This master transceiver also includes two auxiliary digital input (DI_) channels.

The MAX14819/MAX14819A is configurable to operate either with external UARTs or using the integrated fram- ers on the IC.

To ease selection of microcontroller, the master transceiver features frame handlers with UARTs and FIFOs. These are designed to simplify time critical control of all IO-Link M-sequence frame types. The MAX14819/MAX14819A also features autonomous cycle timers, reducing the need for accurate controller timing. Integrated establish-communication sequencers also simplify wake-up management.

The device message response delay on the MAX14819A can be disabled when using the frame handler and the MAX14819A features higher L+ thresholds than the MAX14819. The MAX14819A receivers also feature increased high-frequency signal isolation compared to the MAX14819.

The MAX14819/MAX14819A integrates two low-power sensor supply controllers with advanced current limiting, reverse current-blocking, and reverse polarity protection capability to enable low-power robust solutions.

The MAX14819/MAX14819A is available in a 48-pin (7mm x 7mm) TQFN package and is specified over the extended -40°C to +125°C temperature range.

Applications

• IO-Link Gateways
• IO-Link Master Systems

The MAX14916 and MAX14916A are equipped with eight high-side switches with an on-resistance of only 120mΩ (typ), or 250mΩ (max) at 125°C ambient temperature. Each channel is specified to handle up to 1.1A (MAX14916) or 1.5A (MAX14916A) of continuous current. Similarly, two adjacent channels can be driven together to form four 2.4A (MAX14916) or 3A (MAX14916A) switches.

The SPI interface has a built-in chip addressing decoder, allowing communication with up to four MAX14916 or MAX14916A devices utilizing a common SPI chip select (CS).

The SPI interface provides flexibility for global and per-channel configuration and diagnostic, including undervoltage detection, open-wire detection, overload and current limiting reporting, thermal conditions reporting, and more.

Each channel is equipped with open-wire detection that can detect an open-load in both switch on and off states. LED drivers provide indication of per-channel fault, status, and supply undervoltage conditions. Internal active clamps allow for fast turn-off of inductive loads.

Integrated line-to-ground and line-to-line surge protection only requires a single TVS on V_DD. Integrated surge protection works for quad and octal configuration.

The MAX14916 and MAX14916A are available in a compact 48-pin 6mm x 6mm QFN package.

Applications

• Industrial Digital Outputs
• PLC Systems

The ADIN2299 is a multiprotocol industrial Ethernet platform designed to address the connectivity needs of a broad set of industrial applications. The platform contains a communications controller, a two-port 10/100 Mbps Ethernet switch, memory, physical layer (PHY), and protocol stacks. The ADIN2299 hardware, coupled with its software and precertified industrial protocols, reduces system integration time, and enables fast time to market. Protocol support includes PROFINET, EtherCat, EtherNet/IP, and Modbus TCP.

The ADIN2299 reduces design and debug time by not only providing the protocol stack but also the real-time operating system (RTOS), file system, drivers, and transmission control protocol (TCP)/internet protocol (IP). An application processor can connect to the platform via a universal asynchronous receiver transmitter (UART), serial peripheral interface (SPI), or Ethernet interface. The ADIN2299 software enables the application processor to connect to a unified interface so that various industrial protocols can be utilized without requiring any changes to the application processor software. This eliminates the learning curve associated with incorporating additional protocols. Customers can now leverage a single field device hardware design to support multiple industrial protocols.

Another critical element of the ADIN2299 is cybersecurity. The ADIN2299 has a secure boot and secure update feature which ensures that only verified code is executed, reducing possible disruptions in the field caused by cyberattacks. The ADIN2299 is also available as an embedded design to address applications that have space constraints and unique form factors. To minimize embedded design efforts, the schematics, layout examples, bill of materials, firmware, and design files are readily available.

PRODUCT HIGHLIGHTS

• Multiprotocol support
• Precertified protocol support
• Secure boot and secure update
• Module and embedded design for small and unique form factors
• Low power and low latency
• Robust network policing ensures passing PROFINET Netload Class 3

APPLICATIONS

• Industrial and process automation
• Motion control
• Transportation
• Energy
• Building automation

The Himalaya series of voltage regulator ICs and power modules enable cooler, smaller, and simpler power-supply solutions. The MAXM15065/MAXM15066/MAXM15067 are a family of high-efficiency, synchronous step-down DC-DC modules with integrated controller, MOSFETs, compensation components, and inductor that operate over a wide input-voltage range. The modules operate from 4.5V to 60V input and deliver up to 300mA output current. The MAXM15065 and MAXM15066 are fixed 3.3V and 5V output modules respectively. The MAXM15067 is an adjustable output (0.9V to 6.3V) module. The modules significantly reduce design complexity, manufacturing risks, and offer a true plug and play power/supply solution, reducing time-to-market.

The MAXM15065/MAXM15066/MAXM15067 modules employ peak-current-mode control architecture. To reduce input inrush current, the modules offer a fixed 3.75ms soft-start time.

The MAXM15065/MAXM15066/MAXM15067 modules are available in a low profile, compact 10-pin, 2.6mm x 3mm x 1.5mm, µSLIC ™ package.

Applications

• Industrial Sensors and Encoders
• 4-20mA Current-Loop Powered Sensors
• LDO Replacement
• HVAC and Building Control
• Battery-Powered Equipment
• General Purpose Point-of-Load
• USB Type-C Powered Loads

In the Darwin family, the MAX32670 is an ultra-low-power, cost-effective, high-reliability 32-bit microcontroller enabling designs with complex sensor processing without compromising battery life. It combines a flexible and versatile power management unit with the powerful Arm^® Cortex^®-M4 processor with a floating point unit (FPU). It also offers legacy designs an easy and cost-optimal upgrade path from 8- or 16-bit microcontrollers.

The device integrates 384KB (376KB user) of flash memory and 160KB of SRAM to accommodate application and sensor code. Additional features, such as the two windowed watchdog timers with fully flexible and independent clocking, have been added to further enhance reliable operation. Brown-out detection ensures proper operation during power-down/power-up events and unexpected supply transients.

Multiple high-speed peripherals such as 3.4MHz I²C, 50MHz SPI, and UARTs maximize communication bandwidth. In addition, a low-power UART is available for operation in the lowest-power sleep modes to facilitate wake-up on activity without any loss of data. A total of six timers with I/O capability are provided, including two low-power timers to enable pulse counting, capture/compare, and PWM generation in the lowest-power sleep modes. All of this capability is packaged in a tiny form factor: 5mm × 5mm, 40-pin TQFN-EP or 1.75mm × 2.50mm, 24-bump WLP.

Applications

• Smart Sensor Controller
• Industrial Sensors
• Optical Communication Modules
• Secure Radio Modem Controller
• Battery-Powered Medical Devices
• System Housekeeping Controller
• Algorithm Coprocessor

The MAX22514 IO-Link transceiver integrates high voltage functionality, including one 24V line driver, an integrated DC-DC buck regulator, and 5V and 3.3V linear regulators. The MAX22514 is targeted for IO-Link devices, masters, and industrial switching sensor applications, and can be configured and monitored using a standard SPI interface.

Applications

• IO-Link and Industrial Sensor and Actuator Devices
• The MAX22514 features a SPI interface for configuration and diagnostics. A high level of integration (including two linear regulators, a DC-DC buck regulator, and integrated surge protection, combined with low power dissipation and small packages) optimizes the MAX22514 for use in many different industrial and IO-Link small sensor applications.
• IO-Link Master Transceivers: The MAX22514 is capable of being used in both IOLink devices and IO-Link master applications. A SPI interface is used for extended configurability and diagnostics, and the transceiver is capable of operating at the COM1, COM2, and COM3 IO-Link data rates. The MAX22514 can be configured to enable the required 5mA pull-down/pull-up current on the C/Q line and generate a wake-up pulse.

The MAX32670 evaluation kit (EV kit) provides a platform for evaluation capabilities of the MAX32670. The MAX32670 is an ultra-low-power, cost-effective, highly reliable 32-bit microcontroller that enables designs with complex sensor processing without compromising battery life. It combines a flexible and versatile power management unit with the powerful Arm^® Cortex^® -M4 core with floating point unit (FPU). The MAX32670 also offers legacy designs an easy and cost optimal upgrade path from 8-bit or 16-bit microcontrollers.

Applications

• Algorithm Coprocessor
• Battery-Powered Medical Devices
• Industrial Sensors
• Optical Communication Modules
• Secure Radio Modem Controller
• Smart Sensor Controller
• System Housekeeping Controller

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.

The MAXREFDES277# is a dual-channel IO-Link^® master reference design optimized for quick prototyping. This design uses the Technologie Management Gruppe (TMG TE) IO-Link master stack for the MAX14819A IO-Link master transceiver and is both an evaluation model for an IO-Link master as well as an IO-Link sensor/actuator development and test system. Two IO-Link ports allow for simultaneous testing of up to two different sensors or actuators.

In this design, an STM32™ low-power microcontroller interfaces between the MAX14819A and the control board. The MAX14819A is a dual-channel IO-Link master transceiver with integrated framers and L+ supply controllers. Integrated L+ controllers are used to supply power to connected IO-Link devices. The MAX14819A integrated IO-Link framer offloads time-critical tasks from the microcontroller, easing prototyping and software requirements.

Peripheral module (Pmod™) interface is an open standard written by Digilent, Inc., and is typically used for quick development and prototyping. The MAXREFDES277# with its Pmod and non-standard IO-Link connectors is optimized for this type of functionality. In lieu of the standard M12 connectors used in IO-Link, the MAXREFDES277# uses two small on-board connectors with L+, L-, and IO-Link connections to maintain a small size board.

The board ships with two M12-to-wire IO-Link cables required to connect IO-Link devices (e.g., sensors and/or actuators) to the MAXREFDES277# master board. An AC-to-DC (24V DC/1A) power supply, capable of providing the 24V power to the on-board MAX14819A IO-Link master transceiver and any connected sensors or devices, is also included.

Connecting the MAXREFDES277# to any Analog Devices, Inc., IO-Link device reference design, with the associated software, allows for easy evaluation.

Design files and sample MicroPython software are available in the Design Files. The board is also available for purchase.

Overview

The MAXREFDES42 is a high-accuracy IO-Link^® resistance temperature detector (RTD) temperature sensor reference design for use with a 2-wire, 3-wire, or 4-wire PT100 RTD over a wide temperature range. Built in an industrial form factor, the design makes use of Maxim Integrated’s highly integrated MAX31865 RTD-to-digital converter. A rugged, on-board female M12 connector allows off-the-shelf RTDs to be connected to the board using a standard M12 extension cable. The temp sensor performs accurate temperature conversions to 15-bit resolution with multiple fault detection features. A display shows coarse temperatures rounded to the nearest °C, while the IO-Link communication tracks and provides fine temperature values. This sensor utilizes IQ² Development’s IO-Link device stack to communicate to any IO-Link version 1.1-compliant master. By utilizing an industrial DC-DC step-down converter, this reference design consumes minimal power. The board also contains a male M12 connector for connection to a compliant IO-Link master using a standard M12 cable. Connecting the MAXREFDES42# to a USB IO-link master such as the IQ² Development iqInterface^® IO-Link master, using their iqTool^® software, allows for evaluation with a PC.

Refer to the Details tab for more information and lab measurement data. Design files and firmware can be downloaded from the Design Resources tab.

The MAXREFDES37 IO-Link servo driver provides 5V power, four PWM outputs and four digital inputs for control of up to four 5V servo motors. IO-Link offers the ability to replace pneumatic actuators, and their compressed air lines, in industrial applications. With added level translation, the digital inputs allow for interfacing to binary position or status sensors. This design unveils a completely new application to the industrial segment with potential to disrupt the traditional pneumatic methods used today.

Onboard, standard 3-pin headers allow quick connection to off-the-shelf 5V servo motors. The MAXREFDES37 comes with a HiTec HS-53 servo motor. Push-in terminal blocks allow simple connection to 5V digital inputs, power, ground, and also access to all four PWM channels. The onboard rugged male M12-4 connector allows for a standard connection to any compliant IO-Link master. The MAXREFDES37 utilizes Technologie Management Gruppe Technologie und Engineering’s (TMG TE) IO-Link device stack. Maxim Integrated recommends using the MAXREFDES79 IO-Link master with simple-to-use graphical user interface (GUI) program for easy verification using a Windows^® PC.

Overview

The MAXREFDES164# is a complete, high-accuracy, IO-Link^®, local temperature sensor reference design that provides excellent temperature accuracy from -20°C to +105°C. Built in an industrial form factor, the design makes use of Maxim’s highly integrated MAX31875 digital temperature sensor with an I²C interface.

The MAX31875 operates over the -50°C to +150°C temperature range and measures temperatures from -40°C to +145°C with ±1.5°C accuracy. The temperature sensor performs more accurate temperature conversions from 0°C to +70°C (±1.0°C).

A MAX32660 microcontroller interfaces between the MAX31875 temperature sensor and the MAX14828 IO-Link^® device transceiver. All three Maxim products are in wafer-level packages (WLPs), allowing the MAXREFDES164# to have a tiny footprint—under an inch in length. The 3.3V and 5V rails are generated by utilizing the two integrated LDO regulators within the MAX14828, which saves external components and space. In addition, the three Maxim ICs are low-power devices, allowing this reference design to consume minimal power with low thermal dissipation.

This sensor utilizes either the TMG TE IO-Link device stack or the TEConcept IO-Link device stack to communicate with any IO-Link version 1.1-compliant master. The board contains a male M12 connector for connection to a compliant IO-Link master using a standard M12 cable. Connecting the MAXREFDES164# to a USB IO-link master, such as the MAXREFDES165#, with the associated software allows for easy evaluation with a PC.

Note: The default stack that ships with the MAXREFDES164# is the TMG version. Contact the factory if you require the TEConcept version.

Design files, firmware, and software can be found on the Design Resources tab. The board is also available for purchase.

The MAXREFDES173# is a complete, high-accuracy, IO-Link^®, local temperature sensor reference design that provides excellent temperature accuracy from -40°C to +85°C. Built in an industrial form factor, the design makes use of the ADI MAX31875 digital temperature sensor with an I²C interface.

The MAX31875 operates over the −50°C to +150°C temperature range and measures temperatures from −40°C to +145°C with an accuracy of ±1.75°C or better. The temperature sensor performs more accurate temperature conversions from 0°C to +70°C (±1.0°C).

A Renesas RL78 (R5F10E8EALA) microcontroller interfaces between the MAX31875 temperature sensor and the MAX14827A IO-Link device transceiver. The RL78 microcontroller operates from −40°C to +85°C. The 3.3V and 5V rails are generated by two integrated LDO regulators within the MAX14827A, which reduces the number of required external components and the required circuit footprint. Both the MAX31875 and the MAX14827A are low-power devices, which allow this reference design to consume minimal power with low thermal dissipation. Additionally, both ADI products are in wafer-level packages (WLPs), giving the MAXREFDES173# a tiny overall footprint.

This sensor utilizes the IQ² Development^™ IO-Link device stack to communicate with any IO-Link version 1.1-compliant master. The board contains a male M12 connector for connection to a compliant IO-Link master using a standard M12 cable. Connect the MAXREFDES173# to any IO-link master for easy evaluation (for example, the iqLink^® USB IO-Link Master with the associated software).

Design files, firmware, and software are available on the Design Resources tab. The board is also available for purchase.

The MAXREFDES163# is one of the world’s smallest industrial magnetic sensor solutions that uses a RedRock^™ RR120 TMR integrated digital magnetic sensor and the MAX14839, an industrial sensor output.

The reference design PCB dimension is just 15mm long × 10mm wide, with the width determined by the size of the M12 connector.

Design files can be found on the Design Resources tab. The board is also available for purchase.

Introduction

Advanced factory automation solutions, such as Industry 4.0, require increasing numbers of smart sensors, which are typically controlled using IO-Link^® for the point-to-point serial communication between the sensor and controller (master). As a leading provider of IO-Link sensor transceiver and master transceiver ICs, Maxim also provides complete reference design solutions to help our customers improve their time to market. These proven designs cover all of the hardware and software requirements needed for compliance with the IO-Link standard. The complete reference design, including all of the ICs and external protection devices such as TVS diodes, is provided on a 30mm x 7.5mm printed circuit board (PCB).

Maxim Integrated and Technologie Management Gruppe Technologie und Engineering (TMG TE) collaborated in designing the MAXREFDES171 as a reference design that is compliant with the IO-Link version 1.1/1.0 standard. The MAXREFDES171 design consists of an industry-standard MAX22513 IO-Link device transceiver, a MAX32660 ultra-low-power 16-bit microcontroller utilizing the TMG TE IO-Link device stack, and a commercially available VL53L1 distance sensor.

The MAXREFDES174# is a complete, high-accuracy, IO-Link^® distance sensor reference design that provides accurate measurements for distances up to 4m. Built in an industrial form factor, the reference design makes use of a commercially available time-of-flight (ToF) laser-ranging sensor.

In this design, a Renesas RL78 (R5F10E8EALA) microcontroller interfaces between the distance sensor and the MAX22513 IO-Link device transceiver. The MAX22513 features an internal high-efficiency DC-DC buck regulator, two internal LDOs, and integrated surge protection for robust communications in a very small PCB area without requiring external protection components, such as TVS diodes. The MAX22513 is in a 28-pin TQFN package, allowing the MAXREFDES174# to have a tiny footprint of just 1.2in (3cm) in length. The design is reverse-polarity protected using the integrated active reverse-polarity protection of the MAX22513. The internal DC-DC buck regulator significantly reduces power dissipation, and the two integrated LDO regulators in the MAX22513 generate 3.3V and 5V, which reduces the number of required external components and saves space. The MAX22513 also features low on-resistance drivers (C/Q and DO/DI) to further reduce power dissipation, allowing this reference design to consume minimal power with very low thermal dissipation.

This sensor utilizes the IQ² Development^® IO-Link device stack to communicate to any IO-Link version 1.1-compliant master. The board contains a male M12 connector for connecting to a compliant IO-Link master using a standard M12 cable. Connecting the MAXREFDES174# to a USB IO-link master, such as the MAXREFDES145#, with the associated software allows for easy evaluation.

Design files, firmware, and software are available on the Design Resources tab. The board is also available for purchase.

The MAXREFDES177# is a complete, IO-Link^® universal analog input-output (IO) reference design that has a MAX22515 IO-Link transceiver with integrated protection. It demonstrates a fully software-configurable analog IO module using the MAX22000 industrial configurable analog IO device. The analog (field) side is fully isolated from the IO-Link side with the MAX14483 digital data isolator and an isolated power supply derived from the L+ (24V) supply from the IO-Link master connection.

The MAXREFDES177#, built in an industrial form factor, uses an industry-standard M12 connector with a 4-wire IO-Link cable. The analog (field) side uses a 4-way PCB terminal block. The complete reference design fits on a 61mm x 25mm printed circuit board (PCB).

The configurable modes include analog voltage input (±10V), analog current input (±20mA), analog voltage output (±10V), and analog current output (±20mA) across the AIO and GND terminals. The MAXREFES177# sets the linear range at 105% and full-scale range at 125% of the nominal range. The accuracy is as good as 0.1% over a ±50°C temperature variation. The other two terminals can be configured to measure temperature using a standard device such as a PT100 or PT1000 RTD. These terminals interface to the integrated Programmable Gain Amplifier (PGA) in the MAX22000 at inputs AI5 and AI6.

An Atmel^® ATSAM low-power microcontroller interfaces between the MAX22000 industrial configurable analog IO device and MAX22515 IO-Link device transceiver. The MAX22515 features integrated surge protection for robust communication in a very small PCB area without requiring external protection components such as TVS diodes. The MAX22515 is available in a tiny 20-bump wafer-level package (WLP), allowing the MAXREFDES177# to have a small footprint. The design is reverse-polarity protected using the integrated active reverse-polarity protection of the MAX22515. The MAX22515 has two integrated LDO regulators (3.3V and 5V). The 3.3V LDO generates the 3.3V supply for other circuitry, reducing the number of required external components and saving space. The MAX22515 also features low on-resistance drivers (C/Q and DO/DI) to reduce power dissipation, allowing this reference design to consume minimal power with very low thermal dissipation.

This IO-Link device utilizes the Technologie Management Gruppe Technologie und Engineering (TMG TE) IO-Link device stack to communicate to any IO-Link version 1.1-compliant master. The board contains a male M12 connector to connect to a compliant IO-Link master using a standard M12 cable. Connecting the MAXREFDES177# to a USB IO-link master, such as the MAXREFDES165#, with the associated software allows for easy evaluation.

The MAXREFDES176# is a complete, IO-Link^® 16-channel digital input hub reference design that consists of a MAX22515 IO-Link transceiver with integrated protection. It demonstrates an isolated digital input hub using the MAX22192 isolated octal digital input device daisy-chained with the MAX22190 octal digital input device to provide a total of 16 digital input channels.

Type 1 and Type 3 sensors are supported by default. Type 2 sensors can also be supported by modifying the resistor value that controls the value of the current sink within the devices. Built in an industrial form factor, the MAXREFDES176# uses an industry-standard M12 connector, allowing a 4-wire cable to be used. The digital input channels use industry-standard PCB terminal blocks.

In this design, an Atmel^® ATSAM low-power microcontroller interfaces between the MAX22192 isolated digital input serializer and the MAX22515 IO-Link device transceiver. The MAX22515 features integrated surge protection for robust communication in a very small PCB area without requiring external protection components, such as TVS diodes. The MAX22515 is available in a tiny 20-bump WLP package, allowing the MAXREFDES176# to have a small footprint, though this is mostly determined by the size of the connectors. The design is reverse-polarity protected using the integrated active reverse-polarity protection of the MAX22515. The MAX22515 has two integrated LDO regulators (3.3V and 5.0V). The 3.3V LDO is used to generate the 3.3V supply for other circuitry, reducing the number of required external components and further saving space. The MAX22515 also features low on-resistance drivers (C/Q and DO/DI) to reduce power dissipation, allowing this reference design to consume minimal power with very low thermal dissipation.

This IO-Link device utilizes the Technologie Management Gruppe Technologie und Engineering (TMG TE) IO-Link device stack to communicate to any IO-Link version 1.1-compliant master. The board contains a male M12 connector for connecting to a compliant IO-Link master using a standard M12 cable. Connecting the MAXREFDES176# to a USB IO-link master, such as the MAXREFDES165#, with the associated software allows for easy evaluation.

Design files, firmware, and software are available on the Design Resources tab. The board is also available for purchase.

The MAXREFDES278# is a complete IO-Link^® 8-Channel solenoid actuator reference design based on a MAX22514 IO-Link transceiver with integrated protection. It demonstrates an 8-Channel solenoid actuator using the MAX22200 1A Octal Integrated Serial-Controlled Solenoid Driver with integrated FETs. This reference design has two power-options, it can be powered either through the IO-Link master directly, delivering up to 800mA total load, or for higher currents external power can be provided using an external source. To make sure no current flows back to the IO-Link master, and the IO-Link portion is always powered, this design uses the MAX17608 current limiter with over voltage (OV), under voltage (UV), and reverse protection.

Built in an industrial form factor, and measuring just 85mm x 42mm, the MAXREFDES278# uses an industry-standard M12 connector, allowing a 4-wire IO-Link cable to be used. Each individual solenoid channel has its own 2-way terminal block.

In this design, a STM32 low-power microcontroller interfaces between the MAX22200 octal solenoid driver and the MAX22514 IO-Link device transceiver. The MAX22514 features integrated surge protection for robust communication in a small printed circuit board (PCB) area without requiring external protection components such as transient voltage suppressor (TVS) diodes. The MAX22514 is available in a tiny 25-bump wafer-level package (WLP) as well as a 24-pin TQFN package, allowing the MAXREFDES278# to have a small footprint. The design is reverse-polarity protected using the integrated active reverse-polarity protection of the MAX22514. The MAX22514 has an integrated DC-DC converter as well as two integrated low dropout (LDO) regulators (3.3V and 5.0V). The DC-DC converter is used to generate the 3.3V supply for the microcontroller as well as the MAX22200 logic supply, reducing power-dissipation as well as the number of external components required, saving space and cost. The MAX22514 also features a low on-resistance C/Q driver to reduce power dissipation, allowing this reference design to consume minimal power with very low thermal dissipation.

This IO-Link device utilizes the Technologie Management Gruppe Technologie und Engineering (TMG TE) IO-Link device stack to communicate to any IO-Link version 1.1-compliant master. The board contains a male M12 connector for connecting to a compliant IO-Link master using a standard M12 cable. Connecting the MAXREFDES278# to a USB IO-link master, such as the MAXREFDES165# or MAXREFDES145#, with the associated software allows for easy evaluation.

Design files and software are available on the Design Resources tab. The board is also available for purchase. The reference design document describes the hardware shown above.

APPLICATIONS

• Industrial Automation
• Actuator Modules
• PLC and DCS Systems
• Smart Actuators

Advanced factory automation solutions (i.e., Industry 4.0) require an increasing number of smart sensors and smart actuators, which are typically controlled using IO-Link^® point-to-point serial communication between the sensor/actuator and IO-Link master. As a leading provider of IO-Link device transceiver and master transceiver ICs, Analog Devices, Inc., also provides complete reference design solutions to help our customers improve their time to market. These proven designs cover all the hardware and software requirements needed for compliance with the IO-Link standard.

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 a PLC or be integrated into standard field buses, quickly making it the de-facto standard for universally communicating with smart devices like the MAXREFDES281#.

The MAXREFDES281# is a complete, IO-Link reference design that allows an engineer to connect device or actuator development boards with a Pmod^™-compatible peripheral module connector, and interface to an IO-Link Master. The MAXREFDES281# consists of a MAX22516 IO-Link transceiver with integrated data link controller and protection, a microcontroller to run application code, and has a peripheral module connector to connect device or actuator functions, supporting SPI, I²C, or UART interfaces.

The complete reference design fits on a 75mm x 33mm printed circuit board (PCB). Design files and software are available on the Design Files folder. The board is also available for purchase.

Introduction

With this reference design and firmware, IO-Link allows the user to program and diagnose a four-channel industrial analog output peripheral module (MAX22007PMB#). This enables industrial actuator or sensor equipment original equipment manufacturers (OEMs) to provide end-users with total flexibility at the factory floor level to simplify equipment installation and commissioning, while reducing their own number of stock keeping units, reducing their bill of materials (BOMs), and simplifying and streamlining their own purchasing and manufacturing.

The demonstration firmware provides an example of how to use the MAXREFDES284# with the MAX22007PMB#. The demonstration supports 1-byte PDIn and 7-byte PDOut, where the PDIn data is used as an 8-bit message counter, the 7-byte PDOut is split into 4x 12-bit digital-to-analog converter (DAC) values, one for each analog output, and 1 byte to switch the display through different modes, that is, application data display, timing analysis vs. cycle-time measurements. The minimum cycle-time is defined by the process-data length and COM rate, and with this mode 800μs cycle-time can be reached. The MAX22007PMB# demonstrates four industrial analog outputs that can be individually configured between voltage mode (0V to12.5V) or current mode (0mA to 25mA).

Built in an industrial form factor, and measuring just 75mm x 33mm, the MAXREFDES284# uses an industry-standard M12 connector, allowing a 4-wire IO-Link cable to be used. On the other side, a 12-pin peripheral module can be connected. A 2-pin terminal block provides external access to the 24V that is delivered from the IO-Link master, providing up to 24W.

The demonstration application comes with matching input/output device descriptor (IODD) files, supporting multiple parameters.

In this reference design, a MAX32660 low power microcontroller interfaces between the MAX22516 and peripheral module connector. The MAX22516 features an integrated data link controller that allows the device to autonomously respond to process-data requests from the IO-Link Master as well as manage indexed service data unit (ISDU) transfers, offloading all time-critical tasks from the microcontroller.

The microcontroller can update and read the PDIn and PDOut data at any time. The indexed service data unit (ISDU) requests are stored in a separate buffer and, consequently, are handled without interrupting application tasks. The MAX22516 also integrates surge protection for robust communication without requiring external protection components such as TVS diodes. The MAX22516 is available in a form factor friendly 3.53mm × 3.16mm, 42-bump wafer level packaging (WLP) as well as a 40-pin TQFN package, allowing the MAXREFDES284# to have a small footprint. The reference design is reverse-polarity protected using the integrated active reverse-polarity protection of the MAX22516. The MAX22516 has an integrated DC-DC converter as well as two integrated linear regulators (3.3V and 5.0V). The DC-DC converter is used to generate the 3.3V supply for the microcontroller, reducing power dissipation as well as the number of external components required, further saving additional space on the board. The MAX22516 also features a low on-resistance C/Q driver to reduce power dissipation, allowing this reference design to consume minimal power with very low thermal dissipation.

This IO-Link device was tested to IO-Link Standard 1.1.3 using the TEConcept Device Tester. Connecting the MAXREFDES284# to a USB IO-Link master, such as the MAXREFDES165# or MAXREFDES145#, with the associated software allows for easy evaluation.

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.

The MAXREFDES277# is a dual-channel IO-Link^® master reference design optimized for quick prototyping. This design uses the Technologie Management Gruppe (TMG TE) IO-Link master stack for the MAX14819A IO-Link master transceiver and is both an evaluation model for an IO-Link master as well as an IO-Link sensor/actuator development and test system. Two IO-Link ports allow for simultaneous testing of up to two different sensors or actuators.

In this design, an STM32™ low-power microcontroller interfaces between the MAX14819A and the control board. The MAX14819A is a dual-channel IO-Link master transceiver with integrated framers and L+ supply controllers. Integrated L+ controllers are used to supply power to connected IO-Link devices. The MAX14819A integrated IO-Link framer offloads time-critical tasks from the microcontroller, easing prototyping and software requirements.

Peripheral module (Pmod™) interface is an open standard written by Digilent, Inc., and is typically used for quick development and prototyping. The MAXREFDES277# with its Pmod and non-standard IO-Link connectors is optimized for this type of functionality. In lieu of the standard M12 connectors used in IO-Link, the MAXREFDES277# uses two small on-board connectors with L+, L-, and IO-Link connections to maintain a small size board.

The board ships with two M12-to-wire IO-Link cables required to connect IO-Link devices (e.g., sensors and/or actuators) to the MAXREFDES277# master board. An AC-to-DC (24V DC/1A) power supply, capable of providing the 24V power to the on-board MAX14819A IO-Link master transceiver and any connected sensors or devices, is also included.

Connecting the MAXREFDES277# to any Analog Devices, Inc., IO-Link device reference design, with the associated software, allows for easy evaluation.

Design files and sample MicroPython software are available in the Design Files. The board is also available for purchase.