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.
WA RN I NG : 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
871TM Long-range Sensor with
IO-Link Overview
Chapter 3
What Is IO-Link?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
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
Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021 3
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
Chapter 4
Configure the 871TM Sensor for
IO-Link Mode
Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Example: Set up the Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Chapter 5
Create a Project 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
Add-on Profile
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
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
Chapter 10
Configure the Sensor with the
Studio 5000 Environment
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
Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021 5
Table of Contents
Notes:
6 Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021
Preface
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.
Summary of Changes
Abbreviations
Additional Resources
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,
publication 871TM-UM001
Industrial Automation Wiring and Grounding
Guidelines, publication 1770-4.1
Product Certifications website, rok.auto/
certifications.
Provides information to mount and install 871TM extended range
sensors.
Provides general guidelines for installing a Rockwell Automation
industrial system.
Provides declarations of conformity, certificates, and other
certification details.
You can view or download publications at rok.auto/literature
.
Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021 7
Preface
Notes:
8 Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021
Chapter 1
Product Overview
Product Description 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.
Operating Modes The sensor can operate in two modes:
Mode Description
Standard I/O
(SIO)
IO-Link
Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021 9
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
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
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.
Chapter 1 Product Overview
Features • 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
Specifications
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
Enclosure type rating 12/18/30 barrel size: IP68/IP69K
Housing material Stainless steel face and barrel
Connection type
Status indicators
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
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.
False pulse, transient noise, reverse polarity, short circuit (trigger at 340 mA
typical), overload
Cable: 2 m (6.5 ft) length;
Quick-Disconnect: 4-pin micro style
Yellow: Output energized/360° status indicator visibility; flashing status
indicator indicates target that is located between 80…100% of rated sensing
distance
(1)
8 ms
10 Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021
Chapter 1 Product Overview
Correction Factors 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
sensing range to determine de-rated sensing distance, if applicable.
Instructions for shielded sensor: To determine the appropriate correction
factor, use Table 1
factor based on the type and the target material. Then, in Table 2
result from Table 1
the final correction factor.
Table 1 - Correction Factor
. Multiply the sensor type with the target material by the
and Table 2. In Table 1, determine the appropriate correction
, multiply the
by the material the sensor is mounted in. This number is
Target Material
(No Surrounding
Metal)
(Shielded)
Steel 111111
Copper 0.85 0.8 0.8 0.9 0.9 0.9
Aluminum111111
Brass 1.3 1.4 1.2 1.35 1.3 1.2
Stainless Steel
1 mm/2 mm thick
(1) No detection.
M12 M18 M30
6 mm
(Unshielded)
0.5/0.9
Barrel Size and Nominal Sensing Range
10 mm
(1)
/0.65
10 mm
(Shielded)
0.5/0.9 0.2/0.7 0.35/0.7
20 mm
(Unshielded)
20 mm
(Shielded)
40 mm
(Unshielded)
(1)
/0.25
Table 2 - Surrounding Material
Surrounding Material Type
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
8 mm Dia.,
Shielded
12 mm Dia.,
Shielded
18 mm Dia.,
Shielded
30 mm Dia.,
Shielded
The following table indicates the protrusion distance from the mounting
device for the unshielded sensor face.
Unshielded Sensor
Distance from Mounting
Device [mm (in.)]
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)
8 mm Dia. 12 mm Dia. 18 mm Dia. 30 mm Dia.
Unshielded
See table
Stainless Steel 14 (0.55) 21 (0.83) 43 (1.69) 18 (0.71)
Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021 11
Chapter 1 Product Overview
Notes:
12 Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021
Installation
Chapter 2
User Interface
Mounting
Table 3 - Standard I/O Operation
Status Indicator State Condition
OFF Output is OFF
Yel lo w
Blinking (margin indication) Target is 80…100% of the maximum sensing range
Table 4 - IO-Link Operation
Status Indicator Color State Condition
Yel low
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.
ON Sensor output is triggered ON
OFF Power is OFF
Solid Sensor is connected to IO-Link master
IMPORTANT
Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021 13
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.
Chapter 2 Installation
Dimensions The following illustrations show the relevant device dimensions.
Cable Style
Thread Size Shielded
M8 x 1
M12 x 1
M18 x 1
M30 x 1.5
Micro QD Style
Thread Size Shielded
M8 x 1
M12 x 1
[mm (in.)]
ABCD
Yes
No — 4 (0.16)
Yes
No 45 (1.77) 5 (0.19)
Yes
No 43 (1.69) 7 (0.27)
Yes
No 40 (1.57) 10 (0.39)
Yes
No 46 (1.81) 4 (0.16)
Yes
No 36 (1.42) 5 (0.19)
8 (0.31) 45 (1.77)
12 (0.47) 50 (1.96)
18 (0.71) 50 (1.96)
30 (1.18) 50 (1.96)
[mm (in.)]
ABCD
8 (0.31) 66 (2.60)
12 (0.47) 60 (2.36)
——
50 (1.96) —
50 (1.96) —
50 (1.96) —
46 (1.81) —
41 (1.61) —
M18 x 1
M30 x 1.5
14 Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021
Yes
No 35.5 (1.40) 7 (0.27)
Yes
No 32.5 (1.28) 10 (0.39)
18 (0.71) 63.5 (2.5)
30 (1.18) 66.3 (2.61)
42.5 (1.67) —
42.5 (1.67) —
Pico QD Style — 3-pin
Brown
Black
Blue
1
4
3
+
DC
-
(Cable N.O. source)
Chapter 2 Installation
4 Status
Indicators
Thread Size Shielded
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
Indicators
A
D
C
B
[mm (in.)]
ABCD
A
D
C
Wiring
B
Thread Size Shielded
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)
ABCD
[mm (in.)]
Pin Signal Description
1 10…30V DC Device supply
3GNDGND 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.
Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021 15
Chapter 2 Installation
Notes:
16 Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021
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
Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021 17
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
1L+ 24V
2 Out Depends on sensor
3L- Ground
4C/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
communication rates.)
18 Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021
for
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
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
minimum cycle time.)
for
IO-Link Data Types 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 19
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
associated codes).
for device-specific events and
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
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).
Start-up the I/O System 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.
20 Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021
Chapter 3 871TM Long-range Sensor with IO-Link Overview
Assign Device Parameters 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 Solution
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 21
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.
22 Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021
Chapter 3 871TM Long-range Sensor with IO-Link Overview
871TM Sensor IO-Link Features
The following features are available in the 871TM sensor:
Feat ure Des cript ion
Triggered
Polarity
Margin Status
Switching Timer Mode
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.
Changes the operation of the triggered parameter. It performs the same function as
normally open or normally closed in standard I/O (SIO) mode.
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.
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 23
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
Link 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.
configuration
is automatically stored in the sensor through the IO-
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.
24 Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021
Chapter 4
Configure the 871TM Sensor for IO-Link Mode
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.
Hardware •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])
Software • Studio 5000® environment, version 20 and higher
• Sensor-specific IODD
• 1734-4IOL IO-Link Add-on Profile (AOP)
Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021 25
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
26 Rockwell Automation Publication 871TM-UM002D-EN-P - February 2021
and Chapter 7 on page 35 for detailed instructions).
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