Connectivity for

Human Machine Interfaces (HMIs)

HARTING provides board and I/O connectors for the transmission of power, signal, and data to and from HMIs.

HARTING interface (I/O) and board connectors are used for the transmission of power, signal, and data in HMIs.  Our connector portfolio includes both standard and unique offerings that support critical trends like robustness, miniaturization, and higher data transfer rates.  

Connectivity for HMIs

Click on the hotspots below for connectivity options specific to application or jump directly to our eCatalog where you will find SKUs, technical specs, 3D drawings, distributor stocking information and more. 


Metric Circular Connectors & Cordsets



Wide range of metric circular connectors and cordsets in sizes M8, M12, 7/8", M17 and M23 with coding options A, B, D, L, P, S, X, and Y.  Available as completed cordsets (M8, M12, and M23) or individual components.  

See Technical Specs for Connectors | See Technical Specs for Cordsets | Read More




har-flex®: 1.27mm Pitch Board Connectors

Wide range of robust PCB connectors with 1.27 mm pitch, available in all pin even pin counts from 6-100.  Power and hybrid versions also available. 

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ix Industrial®: Miniaturized 4-8 Wire Ethernet


The ix Industrial® is a miniaturized Ethernet connector for 4-8 wire Ethernet that is 75% smaller and more robust than an RJ45.  With Power over Ethernet (PoE) capabilities, it can reduce the number of components needed for the transmission of power and data. 

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T1 Industrial: Single Pair Ethernet


The T1 Industrial is the standard mating face for the transmission of Industrial Single Pair Ethernet.  Single Pair Ethernet enables the transmission of up to 10 Gbit/s Ethernet over a single pair of wires rather than 4 or 8, enabling a single communication protocol from cloud to every device on an industrial network.  For this reason, Single Pair Ethernet is known as the enabler of IIoT / Industry 4.0

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The HARTING PushPull is a small plastic connector with an internal locking mechanism that makes an audible click when connected.  Available in a rectangular and circular profile.  Due to its internal locking, PushPull connectors can be installed very closely together, saving space.

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Quick Links to Recommended Connectors for HMIs

Design Considerations / Trends for HMIs

The below table refers to frequent design considerations / trends important for engineers designing HMIs.  The recommended products you found above are included and rated for how well they fit these trends.  

Miniaturization / Added Functionality
Higher Data Transfer Rate
HMIs are becoming smaller / more compact in order to add more functionality or save space. Smaller components help reduce the size .
HMIs are expected to be able to transfer high amounts of data at increasingly fast speeds. Connectors must be compatible with desired data rates to achieve necessary speeds
All components for HMIs operating in industrial environments should have an IP rating suitable for that environment to ensure reliability.
M8 D-code (30% smaller than M12 D-Code) and Y-Code hybrid versions available in addition to standard options
Up to 10 Gbit/s
IP65/67 Ratings
M8 D-code (30% smaller than M12 D-Code) and Y-Code hybrid versions available in addition to standard options
Up to 10 Gbit/s
IP65/67 Ratings
Available in every pin even count from 6-100 for the perfect fit
SMT hold-downs protect against mechanical stress
75% smaller than standard RJ45
Up to 10 Gbit/s
IP65/67 with M12 housings
Smaller and lighter weight than 4-8 wire Ethernet
Up to 10 Gbit/s
IP20 - IP65/67
Internal locking mechanism allows connectors to be installed closer together, saving space in the design.
Up to 10 GBit/s

Frequently Asked Questions

What is a HMI?

A HMI, or Human Machine Interface, is a device that allows a human to connect with a machine.   In industry, HMIs can be used to display data, monitor or change machine inputs and outputs, and track KPIs. 


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