IO-Link communication

While Industrial Ethernet protocols such as PROFINET and EtherNet/IP connect advanced and high-performance automation devices, IO-Link extends digital connectivity to field devices used in basic and standard process automation applications. It enables offline parametrization, data transparency and plug-and-produce device exchange available for all devices.

Interested in how IO-Link creates value in the field?

Explore how IO-Link is applied in industrial environments, explore key use cases, and learn how it supports efficient device integration, diagnostics, and digitalization initiatives.

Learn more about IO-Link

Industrial Ethernet network with IO-Link technology

©Endress+Hauser

Typical IO-Link network architecture

Key technical characteristics

Protocol category

Hybrid device communication

Main variants

IO-Link (Type A)

IO-Link (Type B)

Network topology

Point-to-point

Network components

IO-Link master

Supported bit rates

4,8 kbps (COM1)

38,4 kbps (COM2)

230,4 kbps (COM3)

Intrinsic safety option

Control system integration

IO Device Description (IODD) and function blocks

Asset management integration

IO Device Description (IODD)

Standard development organization (SDO)

PROFIBUS and PROFINET International (PI)

All Endress+Hauser IO-Link products are tested and certified according to IO-Link Version 1.1. The technology is proven in practice with a rapidly growing installed base worldwide.

Further technology related information is provided on the IO-Link website.

Discover Endress+Hauser's wide portfolio of IO-Link enabled field devices.

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Simple products
Easy to select, install and operate

Technical excellence

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What is FLEX?

Standard products
Reliable, robust and low-maintenance

Technical excellence

Simplicity

What is FLEX?

High-end products
Highly functional and convenient

Technical excellence

Simplicity

What is FLEX?

Specialized products
Designed for demanding applications

Technical excellence

Simplicity

Variable

What is FLEX?

FLEX selections	Technical excellence	Simplicity
F L E X Fundamental selection Meet your basic measurement needs	Technical excellence	Simplicity
F L E X Lean selection Handle your core processes easily	Technical excellence	Simplicity
F L E X Extended selection Optimize your processes with innovative technologies	Technical excellence	Simplicity
F L E X Xpert selection Master your most challenging applications	Technical excellence	Simplicity Variable

Learn more about the FLEX selections

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FieldEdge SGC500

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Industrial edge device for connecting field devices to the Netilion cloud platform

Device configuration tablet Field Xpert SMT50B

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Field Xpert SMT50B

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Industrial tablet for device configuration in non-hazardous areas (non-ex)

Input Front camera:
1080p at 30 fps 8M RGB camera + 480p at 30 fps IR camera
Rear camera:
1080p at 30 fps 11M RGB camera

Imperial temperature sensor without thermowell

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iTHERM ModuLine TM112 Industrial modular thermometer

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Imperial RTD/TC direct contact thermometer for a wide range of industrial applications

Accuracy Class AA acc. to IEC 60751
Class A acc. to IEC 60751
Class B acc. to IEC 60751
Class special or standard acc. to ASTM E230
Class 1 or 2 acc. to IEC 60584-2

Response time t90 starting at < 1,5 s iTHERM QuickSens
depending on configuration

Max. process pressure (static) depending on the configuration

Operating temperature range PT100 TF iTHERM StrongSens:
-50 °C ...500 °C
(-58 °F ...932 °F)
PT100 TF iTHERM QuickSens:
-50 °C …200 °C
(-58 °F …392 °F)
PT100 WW:
-200 °C ...600 °C
(-328 °F ...1.112 °F)
PT100 basic TF:
-50 °C ...200 °C
(-58 °F ...392 °F)
Typ K:
max. 1.100 °C
(max. 2.012 °F)
Typ J:
max. 800 °C
(max. 1.472 °F)
Typ N:
max. 1.100 °C
(max. 2.012 °F)

Max. immersion length on request up to 180"

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iTHERM ModuLine TM152 Industrial modular thermometer

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Imperial RTD/TC thermometer with barstock thermowell for a wide range of industrial applications

Accuracy Class AA acc. to IEC 60751
Class A acc. to IEC 60751
Class B acc. to IEC 60751
Class special or standard acc. to ASTM E230
Class 1 or 2 acc. to IEC 60584-2

Response time depending on configuration

Max. process pressure (static) depending on the configuration up to 500 bar

Max. immersion length on request 84"

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iTHERM SurfaceLine TM611 Surface thermometer

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Non-invasive RTD/TC thermometer with high measurement performance for demanding applications

Accuracy depending on application
Class AA acc. to IEC 60751
Class A acc. to IEC 60751
Class B acc. to IEC 60751
Class special or standard acc. to ASTM E230
Class 1 or 2 acc. to IEC 60584-2

Response time depending on application

Operating temperature range -196 °C…400 °C (-320,8 °F...752 °F)

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Micropilot FMR43 – radar sensor for hygienic processes

High performance sensor, especially compact and the perfect fit for fast changing level applications

Accuracy +/-1 mm (0.04 in)

Process temperature -40 to +150 °C
(-40 to +302 °F)

Process pressure / max. overpressure limit -1 to +20 bar
(-14.5 to +290 psi)

Max. measurement distance 15 m (49 ft)

Main wetted parts PEEK
PTFE
316L (for threaded connections)

Intrinsically safe temperature sensor – iTHERM ModuLine TM131

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iTHERM ModuLine TM131 Industrial modular thermometer

Metric RTD/TC thermometer with protection tube for a wide range of industrial applications

Accuracy Class AA acc. to IEC 60751
Class A acc. to IEC 60751
Class B acc. to IEC 60751
Class special or standard acc. to ASTM E230
Class 1 or 2 acc. to IEC 60584-2

Response time fastest response time with thermowell t90 starting at below 10 s
depending on configuration

Max. process pressure (static) depending on the configuration up to 100 bar

Operating temperature range PT100 TF iTHERM StrongSens:
-50 °C ...500 °C
(-58 °F ...932 °F)
PT100 TF iTHERM QuickSens:
-50 °C …200 °C
(-58 °F …392 °F)
PT100 WW:
-200 °C ...600 °C
(-328 °F ...1.112 °F)
PT100 TF:
-50 °C ...400 °C
(-58 °F ...752 °F)
Typ K:
max. 1.100 °C
(max. 2.012 °F)
Typ J:
max. 800 °C
(max. 1.472 °F)
Typ N:
max. 1.100 °C
(max. 2.012 °F)

Max. immersion length on request up to 4.500,0 mm (177'')

Hygienic flowmeter with highest repeatability and fully-welded transmitter for filling and dosing

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Dosimag electromagnetic flowmeter

Flowmeter with hygienic design, highest repeatability, and compact, fully-welded housing

Max. measurement error ±0.25 % o.r. ± 1 to 4 m/s (3.3 to 13 ft/s)

Measuring range 0.14 to 1.66 l/s (0.035 to 0.44 gal/s)

Medium temperature range Seal material EPDM: –20 to +130 °C (–4 to +266 °F)
Seal material Silicone: –20 to +130 °C (–4 to +266 °F)
Seal material Viton: 0 to +150 °C (+32 to +302 °F)

Max. process pressure PN 16

Wetted materials Liner: PFA
Electrodes: 1.4435 (316L); Alloy C22, 2.4602 (UNS N06022), Tantalum,
Platinum