Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsDev KitsAdapter

Maxim > Design Support > Technical Documents > Full System Designs > APP 5819

Keywords: Santa Cruz Reference Design, Light and Temperature Sensor, Industrial control, IO-Link (IEC 61131-9)

FULL SYSTEM DESIGN 5819

Santa Cruz (MAXREFDES23#): IO-Link Light Sensor

Feb 14, 2014

Abstract: Maxim's Santa Cruz (MAXREFDES23#) reference design is the world's smallest IO-Link

light sensor compliant with

IEC 61131-9. The Santa Cruz has six different types of sensors: ambient light (clear), red, green, blue, infrared, and is also a

temperature sensor. The entire design fits onto a 6.5mm x 25mm printed circuit board (PCB).

Introduction

Since the 1980s, industrial field buses have allowed smarter devices, quicker

installations, reduced wiring, and easier maintenance. However, the lack of a

single, universally accepted field bus has also created confusion, training

challenges, high costs, and compatibility issues among equipment.

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).

It finally standardizes

interoperability with the industrial equipment from all over the world. IO-Link

can exist directly from the PLC or can be integrated into all standard field

buses, quickly making it the defacto standard for universally communicating

with smart devices like the Santa Cruz (MAXREFDES23#). IO-Link, being simple yet intelligent, allows for the smallest low-cost

smart sensors in the industry.

Santa Cruz is the world's smallest IO-Link light sensor with six integrated sensors ambient light (clear), red, green, blue, infrared,

and temperature) all on a tiny printed circuit board (PCB) that is 6.5mm x 25mm. Maxim Integrated, Renesas

Electronics, and

Technologie Management Gruppe Technologie und Engineering (TMG TE) collaborated in designing Santa Cruz as an IO-Link

version 1.1/1.0 compliant light sensor reference design. The Santa Cruz design consists of an industry standard Maxim

Integrated IO-Link device transceiver (MAX14821), a Renesas ultra-low-power, 16-bit microcontroller (RL78) utilizing TMG TE's

IO-Link device stack and a Maxim Integrated light sensor (MAX44008). See Figure 1.

Page 1 of 11

Summary of content (11 pages)

PAGE 1
Maxim > Design Support > Technical Documents > Full System Designs > APP 5819 Keywords: Santa Cruz Reference Design, Light and Temperature Sensor, Industrial control, IO-Link (IEC 61131-9) FULL SYSTEM DESIGN 5819 Santa Cruz (MAXREFDES23#): IO-Link Light Sensor Feb 14, 2014 Abstract: Maxim's Santa Cruz (MAXREFDES23#) reference design is the world's smallest IO-Link® light sensor compliant with IEC 61131-9.
PAGE 2
Figure 1. The Santa Cruz reference design block diagram. Features World's smallest IO-Link light sensor: 6.5mm x 25mm Low cost IEC 61131-9 IO-Link version 1.1 and 1.
PAGE 3
with an M12 circular housing and avoid the high cost of custom light pipes.This is the reason why the MAX44008 is placed on an extremely small half moon shaped board that is then soldered onto the tip of the Santa Cruz board as shown in Figure 2. An ultra-low-power RL78/G1A microcontroller with current consumption down to 66µA/MHz provides system control on Santa Cruz. It features 64KB on-chip programmable flash memory, 4KB on-chip data flash, and operates down to 1.8V, all in a tiny 3mm x 3mm LGA package.
PAGE 4
Link master TS hardware. Contact TMG TE for more information. Santa Cruz was also verified using Balluff's IO-Link Device Tool version 2.11.1, which comes with the purchase of the Balluff USB IO-Link master, part number BNI USB-901-000-A501. Contact Balluff or one of their local distributors for ordering information. Download the IODD file (*.
PAGE 5
Figure 4. The Santa Cruz firmware flow chart. After hot plug-in, Santa Cruz waits for a wake-up signal from the IO-Link master. Once the wake-up signal is received, Santa Cruz synchronizes to the IO-Link master's 230.4kbps baud rate (COM3). Communication parameters are exchanged. Santa Cruz then starts a cyclic data exchange every 2ms by sending the sensor process data to the IO-Link master. If the sensor is removed, the IO-Link master will detect a missing sensor.
PAGE 6
Figure 5. Use case #1 is the Santa Cruz quick start system. Table 1.
PAGE 7
Figure 6. Use case #2 is the Santa Cruz firmware development system. Table 2.
PAGE 8
User supplied: Windows® PC with a USB port Balluff USB IO-Link master, part number BNI USB-901-000-A501 Balluff IO-Link Device Tool (tested with version 2.11.1 and comes with IO-Link master) M12 4-pin or 3-pin IO-Link cable (BCC05MC) Note: Verify with Balluff that your version of Windows is supported before purchasing their software. Download, read, and carefully follow each step in the Santa Cruz Quick Start Guide.
PAGE 9
Figure 7. Santa Cruz clear radiation pattern with the conditions of AMBPGA [1:0] = 00, AMBTIM [2:0] = 000. Figure 8. Cyclic data exchange every 2ms from the Santa Cruz to the IO-Link master.
PAGE 10
Figure 9. A 100µs time base oscilloscope shot of the 24V supply being hot-plugged into the Santa Cruz (M12-1). Figure 10. A 10µs time base oscilloscope shot of the 24V supply being hot-plugged into the Santa Cruz (M12-1). Figure 11. A 50ns time base oscilloscope shot of the 24V supply being hot-plugged into the Santa Cruz (M12-1).
PAGE 11
PCB Gerber PCB CAD (PADS 9.0) Firmware Files RL78 Platform Buy Reference Design Buy Direct: Santa Cruz (MAXREFDES23#) Or Order the Santa Cruz reference design (MAXREFDES23#) from your local Maxim representative. References 1. Fieldbus Inc's IEC61158 Technology Comparison study, Slide 58: "Fieldbus Technology Challenges". 2. IO-Link System Description 2013 by IO-Link Company Community. Page 3 , Preface. IO-Link is a registered trademark of ifm electronic GmbH.