Rockwell Automation Long-range Inductive Sensors User Manual

Long-range Inductive Sensors with IO-Link Interface

Catalog Numbers 871TM-MxxNP8-xx, 871TM-NxxNP8-xx, 871TM-MxxNP18-xx, 871TM-NxxNP18-xx, 871TM-MxxNP12-xx, 871TM-NxxNP12-xx, 871TM-MxxNP30-xx, 871TM-NxxNP30xx

User Manual

Original Instructions

Long-range Inductive Sensors with IO-Link Interface User Manual

Important User Information

Read this document and the documents listed in the additional resources section about installation, configuration, and operation of this equipment before you install, configure, operate, or maintain this product. Users are required to familiarize themselves with installation and wiring instructions in addition to requirements of all applicable codes, laws, and standards.

Activities including installation, adjustments, putting into service, use, assembly, disassembly, and maintenance are required to be carried out by suitably trained personnel in accordance with applicable code of practice.

If this equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.

In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment.

The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables and requirements associated with any particular installation, Rockwell Automation, Inc. cannot assume responsibility or liability for actual use based on the examples and diagrams.

No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits, equipment, or software described in this manual.

Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell Automation, Inc., is prohibited.

Throughout this manual, when necessary, we use notes to make you aware of safety considerations.

WARNING: Identifies information about practices or circumstances that can cause an explosion in a hazardous environment, which may lead to personal injury or death, property damage, or economic loss.

ATTENTION: Identifies information about practices or circumstances that can lead to personal injury or death, property damage, or economic loss. Attentions help you identify a hazard, avoid a hazard, and recognize the consequence.

IMPORTANT Identifies information that is critical for successful application and understanding of the product.

Labels may also be on or inside the equipment to provide specific precautions.

SHOCK HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that dangerous voltage may be present.

BURN HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that surfaces may reach dangerous temperatures.

ARC FLASH HAZARD: Labels may be on or inside the equipment, for example, a motor control center, to alert people to potential Arc Flash. Arc Flash will cause severe injury or death. Wear proper Personal Protective Equipment (PPE). Follow ALL Regulatory requirements for safe work practices and for Personal Protective Equipment (PPE).

2	Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021

Table of Contents

	Preface
	Summary of Changes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 7
	Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7
	Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7
	Chapter 1
Product Overview	Product Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	9
	Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	9
	Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	10
	Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	10
	Correction Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	11
	Chapter 2
Installation	User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	13
	Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	13
	Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	14
	Cable Style . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	14
	Micro QD Style . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	14
	Pico QD Style — 3-pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	15
	Pico QD Style — 4-pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	15
	Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	15
	Chapter 3
871TM Long-range Sensor with	What Is IO-Link?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	17
IO-Link Overview	Why IO-Link?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	17
	Seamless Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	17
	Real-time Diagnostics and Trending . . . . . . . . . . . . . . . . . . . . . . . . . .	17
	Sensor Health Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	18
	Device Profiles and Automatic Device Configuration. . . . . . . . . . . .	18
	Descriptive Tags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	18
	How Does IO-Link Work?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	18
	Transmission Rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	18
	Transmission Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	19
	Response Time of the IO-Link System . . . . . . . . . . . . . . . . . . . . . . . . .	19
	IO-Link Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	19
	Process Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	19
	Value Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	19
	Device Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	20
	Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	20
	Access IO-Link Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	20
	Cyclic Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	20
	Acyclic Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	20
	Start-up the I/O System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	20
	Assign Device Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	21
	Rockwell Automation Solution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	21

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Table of Contents

Premier Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

871TM Sensor IO-Link Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Correlation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Automatic Device Configuration (ADC) . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Tag Naming for I/O Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Configure the 871TM Sensor for IO-Link Mode

Create a Project

Chapter 4

Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Example: Set up the Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Chapter 5
Project Creation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	27
Chapter 6

Configure the IO-Link Master	Configuration Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	31
	AOP Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	34
	Chapter 7
Connect the 871TM to the IO-Link	Connection Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	35
Master
	Chapter 8
Register the 871TM IODD	Registration Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	41
	Chapter 9
Review the 1734-4IOL IO-Link	Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	49
Add-on Profile	Device Parameter Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	49
	Common Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	50
	Identification Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	51
	Parameter Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	51
	Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	52
	Switching Timer Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	52
	Diagnosis Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	54
	Controller Tags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	55

Configure the Sensor with the Studio 5000 Environment

Chapter 10

Sample Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Read the 871TM Configuration Via Explicit Message . . . . . . . . . . . . 61 Decipher the Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 Write a New Configuration to the 871TM Via Explicit Message . . . 63 Reset the Sensor to Default . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

	Chapter 11
Troubleshooting	Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	69

4	Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021

Table of Contents

	Appendix A
Install the Add-on Profile	Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	71
	Perform the Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	71
	Appendix B
Device Parameters	Identification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	77
	Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	77
	Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	78
	Process Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	78
	Appendix C
Error Codes	Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	79
	Location of Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	80
	Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	81

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Table of Contents

Notes:

6	Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021

Preface

Summary of Changes

Abbreviations

Additional Resources

This manual is a reference guide for Bulletin 871TM inductive sensors with IOLink. It describes the procedures that you use to install, configure, troubleshoot, and use these sensors. Use this manual if you are responsible for these tasks for long-range inductive sensors with IO-Link.

This manual contains the following new and updated information:

•Updated Catalog Numbers on the front cover.

•Updated the URL for the Sample Code Library in Sample Code on page 57.

The following abbreviations are used in this publication.

Abbreviation	Definition
ADC	Automatic Device Configuration
AOI	Add-on Instruction
AOP	Add-on Profile
ASN	Application-specific name
IEC	International Electrotechnical Commission
IODD	I/O device description
NEC	National Electric Code
QD	Quick disconnect
SIO	Standard I/O

These documents contain additional information concerning related products from Rockwell Automation.

Resource	Description
871TM Extended Range User Manual,	Provides information to mount and install 871TM extended range
publication 871TM-UM001	sensors.
Industrial Automation Wiring and Grounding	Provides general guidelines for installing a Rockwell Automation
Guidelines, publication 1770-4.1	industrial system.
Product Certifications website, rok.auto/	Provides declarations of conformity, certificates, and other
certifications.	certification details.

You can view or download publications at rok.auto/literature.

Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021

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Preface

Notes:

8	Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021

Chapter 1

Product Overview

Product Description

Operating Modes

The Bulletin 871TM family of inductive sensors is the result of a unique collection of enhancements—electrical and mechanical—that make these sensors the optimal solution for harsh duty applications. The machined stainless steel housing combines an unusually thick sensing face with onepiece construction. The result is a sensor that is exceptionally resistant to abrasion and impervious to fluid ingress, a feature especially crucial in applications that involve cutting fluids and chemical washdowns. The 871TM sensor boasts sensing ranges two to three times greater than standard models, and offers increased sensing distance for all metals, including copper and brass.

The IO-Link interface enables consistent communication for diagnosing and parameterizing through to the sensor level and makes the intelligence that is already integrated in every 871TM inductive sensor fully available to you. This design provides particular advantages in the service area (fault elimination, maintenance, and device replacement), during commissioning (identification, configuration, and during operation, continuous parameter monitoring, and online diagnosis). The 871TM sensor operates as a standard discrete sensor on pin four (black) or communicates via IO-Link on the same pin when connected to an IO-Link master.

The sensor can operate in two modes:

Mode	Description
Standard I/O	The sensor default operation mode. The sensor and its output act as a standard inductive sensor
	without IO-Link functionality. This mode of operation is active when the sensor is connected to a
(SIO)	digital input device such as a PLC input module, a distribution box, or an input terminal connection.
	This mode is automatically activated when the sensor is connected to an IO-Link enabled master
IO-Link	device. Upon entering this mode, the yellow status indicator on the sensor stays solid to indicate
	that IO-Link communication has successfully been established with the master. The sensor
	transmits parameter and diagnostic information that can be accessed via PLC process data. No user
	intervention is required to enable this functionality within the sensor.

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Chapter 1 Product Overview

Features

Specifications

•10…30V DC operating voltage

•Stainless steel housing

•Equal sensing for both steel and aluminum

•IP68/IP69K rated

•3-wire operation

•IO-Link communication protocol helps minimize downtime and increase productivity

•IO-Link sensors are forward/backward compatible with standard sensors: the same sensors and same cables that are used in IO-Link and non-IO-Link applications

•IO-Link provides

-Remote detection of the health of the sensor

-Margin status (low alarm)

-Timer function

	Attribute	Value
	Certifications	c-UL-us Listed and CE Marked for all applicable directives
	Load current	<200 mA
	Capacitive load	1 mF
	Leakage current	0.1 mA
	Operating voltage	10…30V DC
	Voltage drop	2V DC at 200 mA
	Repeatability	5% at constant temperature
	Hysteresis	10% typical
	Protection type	False pulse, transient noise, reverse polarity, short circuit (trigger at 340 mA
		typical), overload
	Enclosure type rating	12/18/30 barrel size: IP68/IP69K
	Housing material	Stainless steel face and barrel
	Connection type	Cable: 2 m (6.5 ft) length;
		Quick-Disconnect: 4-pin micro style
	Status indicators	Yellow: Output energized/360° status indicator visibility; flashing status
		indicator indicates target that is located between 80…100% of rated sensing
		distance
	Operating temperature	-25…+70 °C (-13…+158 °F)
	Shock	30 g, 11 ms
	Vibration	55 Hz, 1 mm amplitude, 3 planes
	IO-Link
	Protocol	IO-Link V1.0
	Interface type	IO-Link
	Mode	COM2 (38.4 kBd)
	Cycle time, min	8 ms (1)
	SIO (Standard I/O)	Supported (pin 4 for either IO-Link or SIO)

(1) These products have been tested to comply with IO-Link test specification IEC 61131-9. Environmental EMC and Physical Layer testing have not been performed with the device running in IO-Link mode.

10	Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021

Correction Factors

Chapter 1 Product Overview

To determine the sensing distance for materials other than the standard mild steel, a correction factor is used. The correction factors are used as a general guideline for determining the de-rated sensing distance, if applicable.

Instructions for unshielded sensor: To determine the appropriate correction factor, use Table 1. Multiply the sensor type with the target material by the sensing range to determine de-rated sensing distance, if applicable.

Instructions for shielded sensor: To determine the appropriate correction factor, use Table 1 and Table 2. In Table 1, determine the appropriate correction factor based on the type and the target material. Then, in Table 2, multiply the result from Table 1 by the material the sensor is mounted in. This number is the final correction factor.

Table 1 - Correction Factor

Target Material			Barrel Size and Nominal Sensing Range
		M12			M18			M30
(No Surrounding
Metal)	6 mm		10 mm	10 mm		20 mm	20 mm		40 mm
	(Shielded)		(Unshielded)	(Shielded)		(Unshielded)	(Shielded)		(Unshielded)
Steel	1		1	1		1	1		1
Copper	0.85		0.8	0.8		0.9	0.9		0.9
Aluminum	1		1	1		1	1		1
Brass	1.3		1.4	1.2		1.35	1.3		1.2
Stainless Steel	0.5/0.9		(1)/0.65	0.5/0.9		0.2/0.7	0.35/0.7		(1)/0.25
1 mm/2 mm thick
(1) No detection.

Table 2 - Surrounding Material

	Surrounding Material Type	8 mm Dia.,	12 mm Dia.,	18 mm Dia.,	30 mm Dia.,
		Shielded	Shielded	Shielded	Shielded
	Steel	1	0.7	0.75	0.9
	Aluminum	0.9	1.15	0.9	0.7
	Brass	0.9	1.05	0.75	0.6
	Stainless Steel	1	0.8	0.8	1.3

The following table indicates the protrusion distance from the mounting device for the unshielded sensor face.

Unshielded Sensor	8 mm Dia.	12 mm Dia.		18 mm Dia.	30 mm Dia.
Distance from Mounting			Unshielded
Device [mm (in.)]						See table
Steel	15 (0.59)	22	(0.87)	36 (1.41)	18 (0.71)
Aluminum	9 (0.35)	13	(0.51)	22 (0.87)	34 (1.34)
Brass	10 (0.39)	15 (0.59)		22 (0.87)	34 (1.34)
Stainless Steel	14 (0.55)	21 (0.83)		43 (1.69)	18 (0.71)

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Chapter 1 Product Overview

Notes:

12	Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021

Chapter 2

Installation

User Interface

Mounting

Table 3 - Standard I/O Operation

Status Indicator	State	Condition
	OFF	Output is OFF
Yellow	ON	Sensor output is triggered ON
	Blinking (margin indication)	Target is 80…100% of the maximum sensing range

Table 4 - IO-Link Operation

	Status Indicator Color	State	Condition
	Yellow	OFF	Power is OFF
		Solid	Sensor is connected to IO-Link master

Securely mount the sensor on a firm, stable surface, or support for reliable operation. Mounting is subject to excessive vibration or shifting could cause intermittent operation. Once securely mounted, the sensor can be wired per the wiring instructions in the next section.

You may need to adjust the sensor in the mounting due to the location of the target in relation to the sensor face. The 871TM sensor offers margin indication through the yellow status indicator. The status indicator blinks when the target is 80% of the maximum sensing distance or farther from the sensor face. It is recommended that you adjust the sensor to be closer to the target.

IMPORTANT When the sensor is connected to IO-Link, the status indicators do not indicate margin status. The margin status is shown as a process bit in the Studio 5000® controller tag.

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Chapter 2

Installation

Dimensions	The following illustrations show the relevant device dimensions.
	Cable Style

Thread Size	Shielded			[mm (in.)]
		A	B		C	D
M8 x 1	Yes	8 (0.31)	45 (1.77)		—	—
	No				—	4 (0.16)
M12 x 1	Yes	12 (0.47)	50 (1.96)		50 (1.96)	—
	No				45 (1.77)	5 (0.19)
M18 x 1	Yes	18 (0.71)	50 (1.96)		50 (1.96)	—
	No				43 (1.69)	7 (0.27)
M30 x 1.5	Yes	30 (1.18)	50 (1.96)		50 (1.96)	—
	No				40 (1.57)	10 (0.39)

Micro QD Style

	Thread Size	Shielded		[mm (in.)]
			A	B	C	D
	M8 x 1	Yes	8 (0.31)	66 (2.60)	46 (1.81)	—
		No			46 (1.81)	4 (0.16)
	M12 x 1	Yes	12 (0.47)	60 (2.36)	41 (1.61)	—
		No			36 (1.42)	5 (0.19)
	M18 x 1	Yes	18 (0.71)	63.5 (2.5)	42.5 (1.67)	—
		No			35.5 (1.40)	7 (0.27)
	M30 x 1.5	Yes	30 (1.18)	66.3 (2.61)	42.5 (1.67)	—
		No			32.5 (1.28)	10 (0.39)

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Chapter 2

Installation

Pico QD Style — 3-pin

4 Status	A
Indicators

D

C

B

	Thread Size	Shielded		[mm (in.)]
			A	B	C	D
	M8 x 1	Yes	8 (0.31)	60 (2.36)	51.5 (2.03)	—
		No	8 (0.31)	60 (2.36)	51.5 (2.03)	4 (0.16)

Pico QD Style — 4-pin

4 Status	A
Indicators
	D

C

B

	Thread Size	Shielded		[mm (in.)]
			A	B	C	D
	M8 x 1	Yes	8 (0.31)	66 (2.59)	51.5 (2.03)	—
		No	8 (0.31)	66 (2.59)	51.5 (2.03)	4 (0.16)

Wiring

Brown

1

+

Black

4

DC

Blue

3

-

(Cable N.O. source)

Pin

Signal

Description

1

10…30V DC

Device supply

3

GND

GND for device

4

LOAD

IO-Link/Output/SIO

We recommend the use of Bulletin 889 cordsets and patchcords for quickdisconnect (QD) model sensors. All external wiring must conform to the National Electric Code and all applicable local codes.

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Chapter 2

Installation

Notes:

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Chapter 3

871TM Long-range Sensor with IO-Link Overview

What Is IO-Link?

IO-Link technology is an open point-to-point communication standard and was launched as (IS) IEC 61131-9. IO-Link is now the first globally standardized technology for sensor and actuator communication with a field bus system. This technology provides benefits to both OEMs and end users.

IO-Link provides communications-capable sensors to the control level by a cost-effective point-to-point connection. IO-Link provides a point-to-point link between the I/O module and sensor that is used for transferring detailed diagnostics, device identity information, process data, and parameterization.

IO-Link communication is based on a master-slave structure in which the master controls the interface access to the sensor. The option of using the intelligence that is integrated into the sensor provides you with new methods to commission your sensor. Benefits range from reduced installation time during startup to increased diagnostics over the lifetime of the machine. Benefits of IO-Link technology include:

•Reduced inventory and operating costs

•Increased uptime/productivity

•Simplified design, installation, configuration, and maintenance

•Enhanced flexibility and scalability

•Detailed diagnostic information for preventative maintenance

Why IO-Link?

IO-Link offers a full range of advanced features and functions.

Seamless Integration

•Forward and backward compatible, sensor catalog numbers remain the same

•No special cables required

•Connectivity options remain the same

•Access IO-Link functionality by simply connecting an IO-Link enabled device to an IO-Link master

Real-time Diagnostics and Trending

•Real-time monitoring of the entire machine down to the sensor level

•Optimized preventative maintenance—identify and correct issues before failures can occur

•Detect sensor malfunctions/failure

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Chapter 3 871TM Long-range Sensor with IO-Link Overview

Sensor Health Status

Real-time monitoring verifies that sensors are operating correctly

Device Profiles and Automatic Device Configuration

•Golden device configurations are stored in the IO-Link master module

•Within minutes instead of hours, modify sensor parameters to produce different finished goods

Descriptive Tags

•Faster programming during initial setup

•More efficient troubleshooting process data tags are named based on the information they provide

•Easily monitor sensor data though intuitive tag names

How Does IO-Link Work? IO-Link delivers data over the same standard field cabling used today. By connecting an IO-Link sensor to an IO-Link master, the field-device data and diagnostics are accessible. So, go beyond product detection on the machine— now the health of the machine can be monitored as it runs.

Pin

Signal

Remark

1

L+

24V

2

Out

Depends on sensor

3

L-

Ground

4

C/Q

Communication/

switching signal

IMPORTANT The response time of an IO-Link system may not be fast enough for high-speed applications. In this case, it may be possible to monitor/ configure the sensor through IO-Link on pin 4 of the sensor while connecting pin 2 (if the sensor offers a second output) of the sensor to a standard input card.

Transmission Rates

Three communication rates are specified for the IO-Link device:

•COM 1 = 4.8 kBd

•COM 2 = 38.4 kBd

•COM 3 = 230.4 kBd

An IO-Link device typically supports only one of the specified transmissions rates, while the IO-Link V1.1 specifications requires an IO-Link master to support all three communication rates. (See Specifications on page 10 for communication rates.)

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Chapter 3 871TM Long-range Sensor with IO-Link Overview

Transmission Quality

The IO-Link communication system operates at a 24V level. If a transmission fails, the frame is repeated two more times. If the transmission fails on the second try, the IO-Link master recognizes a communication failure and signals it to the controller.

Response Time of the IO-Link System

IO-Link Data Types

The device description file (IODD) of the device contains a value for the minimum cycle time of the device. This value indicates the time intervals at which the master may address the device. The value has a large influence on the response time. In addition, the master has an internal processing time that is included in the calculation of the system response time.

Devices with different minimum cycle times can be configured on one master. The response time differs accordingly for these devices. When configuring the master, you can specify a fixed cycle time and the device-specific minimum cycle time that is stored in the IODD. The master then addresses the device that is based on this specification. The typical response time for a device therefore results from the effective cycle time of the device and the typical internal processing time of the master. (See Specifications on page 10 for minimum cycle time.)

There are four data types available through IO-Link:

Process data	→ Cyclic data
Value status	→ Cyclic data
Device data	→ Acyclic data
Events	→ Acyclic data

Process Data

The process data of the devices are transmitted cyclically in a data frame in which the device specifies the size of the process data. Depending on the device, 0…32 bytes of process data are possible (for each input and output). The consistency width of the transmission is not fixed and is thus dependent on the master.

Some devices can support multiple process data modes, which allow you to select different cyclic process data themes.

Value Status

The value status indicates whether the process data is valid or invalid. The value status can be transmitted cyclically with the process data.

Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021

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Chapter 3 871TM Long-range Sensor with IO-Link Overview

Device Data

Device data supports device-specific configurable parameters, identification data, and diagnostic information. They are exchanged acyclically and at the request of the IO-Link master. Device data can be written to the device (Write) and also read from the device (Read).

Events

When an event occurs, the device signals the presence of the event to the master. The master then reads out the event. Events can be error messages and warnings/maintenance data. Error messages are transmitted from the device to the controller via the IO-Link master. The transmission of device parameters or events occurs independently from the cyclic transmission of process data (see Appendix C on page 79 for device-specific events and associated codes).

Access IO-Link Data	Cyclic Data
	To exchange the cyclic process data between an IO-Link device and a
	controller, the IO-Link data from the IO-Link master is placed on the address
	ranges assigned beforehand. The user program on the controller accesses the
	process values using these addresses and processes them. The cyclic data
	exchange from the controller to the IO-Link device (that is, IO-Link sensor) is
	performed in reverse.
	Acyclic Data

Start-up the I/O System

Acyclic data, such as device parameters or events, are exchanged using a specified index and subindex range. The controller accesses these using Explicit Messaging. The use of the index and subindex ranges allows targeted access to the device data (that is, for reassigning the device or master parameters during operation).

If the port of the master is set to IO-Link mode, the IO-Link master attempts to communicate with the connected IO-Link device. To do so, the IO-Link master sends a defined signal (wake up pulse) and waits for the IO-Link device to reply.

The IO-Link master initially attempts to communicate at the highest defined data transmission rate. If unsuccessful, the IO-Link master then attempts to communicate at the next lower data transmission rate.

If the master receives a reply, the communication begins. Next, it exchanges the communication parameters. If necessary, parameters that are saved in the system are transmitted to the device. Then, the cyclic exchange of the process data and value status begins.

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Chapter 3 871TM Long-range Sensor with IO-Link Overview

Assign Device Parameters

Rockwell Automation

Solution

Configuration of a device for a specific application requires changes to parameter settings. The device parameters and setting values are contained in the IODD of the device.

I/O Device Description (IODD) files contain information about the device identity, parameters, process data, diagnostic data, and communication properties. These files are required to establish communication with the sensors via IO-Link.

The IODD consists of multiple data files; the main file and several optional language files are in XML-format and graphic files are in PNG format (portable network graphics). These files adhere to the IO-Link open standard, which means that they can be used with any IO-Link masters.

IODD files are assigned using the Studio 5000 environment and the 1734-4IOL Add-on Profile (when using the 1734-4IOL IO-Link master module).

Rockwell Automation is the only supplier who provides every piece of the Connected Enterprise solution from top to bottom. Plus, exclusive features and Premier Integration between Allen-Bradley® components and an Integrated Architecture® system allow for a seamless connection and commission of control components. Empowering the ability to reap the benefits of an IO-Link solution with access to more detailed and customized plant-floor information than other solutions can offer.

Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021

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Chapter 3 871TM Long-range Sensor with IO-Link Overview

Premier Integration

The Studio 5000 Logix Designer® environment combines design and engineering elements in one interface, which enables you to access I/O and configuration data across the Integrated Architecture system. Use of a Rockwell Automation solution, provides a smooth, consistent integration of Allen-Bradley IO-Link enabled devices into the system.

To simplify the integration of the Allen-Bradley IO-Link devices to the Rockwell Automation architecture, there is an IO-Link Add-on Profile (AOP) available for the 1734-4IOL master module. The use of an AOP simplifies the setup of devices by providing the necessary fields in an organized manner that allows you to build and configure their systems in a quick and efficient manner.

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Chapter 3 871TM Long-range Sensor with IO-Link Overview

871TM Sensor IO-Link

Features

The following features are available in the 871TM sensor:

	Feature	Description
	Triggered	The process data bit that communicates the change in state of the 871TM sensor upon the
		detection of a target. The status of the triggered bit can be viewed in a Studio 5000
		controller tag.
	Polarity	Changes the operation of the triggered parameter. It performs the same function as
		normally open or normally closed in standard I/O (SIO) mode.
	Margin Status	The process data bit that communicates the target is within or beyond 80% of the
		maximum sensing range of the sensor. The margin status bit can be viewed in Studio
		5000 controller tag.
	Switching Timer Mode	Ability to manipulate the output of the sensor in relation to timing. It is useful for precision
		applications where the output of the needs to be precisely triggered at a certain time.

Correlation

The AOP reads all configuration read-write (R.W.) parameters directly from the connected IO-Link devices and compares the values to ones stored in the controller. This action determines if there are differences (note that the correlation does not work for read-only (R.O.) in the parameters or for competitive sensors.). This feature is for Allen-Bradley enabled IO-Link devices only and is an online only function that runs when opening up the AOP.

•No differences: There are no differences, so you go directly into the AOP.

•Differences: If there are differences, the user is provided with a differences dialogue that identifies the IO-Link parameters that, do not match for each channel. You can then choose, on a channel by channel basis (where differences exist) to upload the parameters that are currently in the device and store them in the controller. Alternatively, you can choose to download the parameters that are stored in the controller to the connected IO-Link device.

Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021

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Chapter 3 871TM Long-range Sensor with IO-Link Overview

Automatic Device

Configuration (ADC)

Replacement of damaged sensors is easy. Simply remove the old Allen-Bradley sensor and connect the new sensor (with the same catalog number) — the controller automatically sends the configuration to the new sensor.

ADC capability within the sensor and controller enable flexibility and reliability in your application. When the sensor becomes damaged or fails and must be replaced, replace it with the exact same catalog number of the existing sensor. When the damaged sensor is removed and the new sensor is plugged in, the existing configuration is automatically stored in the sensor through the IOLink Master. No additional steps are required on the sensor or in the controller. No personal computer is required and reteaching the sensor is not required.

Tag Naming for I/O Data

Rockwell Automation system solutions provide tag names that are based on the Allen-Bradley sensor connected. I/O data is converted, formatted, and named based on the Allen-Bradley sensor applied. Reduces commissioning time by the OEM and reduces troubleshooting time by the end user when searching for sensor data. Consistent naming techniques used.

The Triggered and Margin Status that is previously shown are examples of consistent tag names that are used across all Allen-Bradley sensors. These tags give insightful and descriptive meaning to the operation of the sensor output. The tags may change depending on the type of sensor being used and the functionality within the sensor.

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Chapter 4

Configure the 871TM Sensor for IO-Link Mode

Hardware

Software

This chapter shows the physical hardware and software that is required to configure the 871TM sensor through IO-Link and provides a simple guide to setting up the hardware.

The products that are required include the following hardware and software.

•871TM-xx (compatible sensors are N.O. PNP) with 12 mm or 18 mm barrel diameter

•CompactLogix™ or ControlLogix® PLC Platform

•POINT I/O™ Communications Interface: 1734-AENTR

•POINT I/O IO-Link Master Module: 1734-4IOL

•POINT I/O Terminal Base: 1734-TB

•RJ45 network cable for EtherNet/IP™ connectivity: 1585J-M8TBJM-1M9xx

•889D cordsets (optional): 889D-F3AC-2xx (IO-Link maximum acceptable cable length is 20 m [65.6 ft])

•Studio 5000® environment, version 20 and higher

•Sensor-specific IODD

•1734-4IOL IO-Link Add-on Profile (AOP)

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Chapter 4 Configure the 871TM Sensor for IO-Link Mode

Example: Set up the Hardware

In this example, a POINT I/O™ chassis is shown with a 1734-AENTR adapter and a 1734-4IOL IO-Link master module in the first slot. The 1734-AENTR adapter is communicating with a CompactLogix controller via an EtherNet/IP network.

When adding a 871TM sensor to the 1734-4IOL master module, complete the following steps:

1.Provide power to the 1734-AENTR adapter.

2.Set the node address on 1734-AENTR adapter.

3.Connect the 1734-AENTR adapter to the Allen-Bradley controller with the recommended RJ45 Ethernet cable.

4.Wire the sensor cable to the desired location on the IO-Link master (in this example, we are showing the sensor that is wired to the channel 0).

5.Connect the 871TM sensor to the other end of the sensor cable.

6.After connecting the sensor, you must create/open a project in the Studio 5000 environment to establish communication with the Allen-Bradley controller that is being used. You must also add the 1734-AENTR adapter and 1734-4IOL IO-Link master module to Controller Organizer Tree (see Chapter 6 on page 31 and Chapter 7 on page 35 for detailed instructions).

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