Connectivity for

PLCs and Industrial Computers

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

HARTING interface connectors are used for the transfer of power and data to and from PLCs to other devices on a machine.  In addition to standard RJ45, we offer a wide range of Ethernet solutions from Single Pair Ethernet to miniaturized ix Industrial for 4-8 wire Ethernet, and circular connectors. 

Connectivity for PLCs

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. 

See Technical Specs | Read More


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. 

See Technical Specs | Read More


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

See Technical Specs | Read More

Quick Links to Recommended Connectors for PLCs

Design Considerations / Trends for PLCs

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

Higher Data Transfer Rates
PLCs are becoming smaller / more compact in order to add more functionality or save space. Smaller components help reduce the size .
PLCs are the brains of the machines and need to process and send / receive data faster than ever.
All components for PLCs 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

Frequently Asked Questions

What are PLCs and Industrial Computers?

PLCs and Industrial Computers control various electro-mechanical processes on machines and on factory floors. 

In particular, PLC have three main categories of function: input, output and CPU.  They capture data from the machine or floor by monitoring inputs.  The input data is then processed by the CPU, which applies programmed logic to the data based in the input captured.   The CPU executes the program logic and outputs the command to the machine. 



Quick Links to HARTING Offerings