Why Choose the WAGO 750-375 PROFINET IO Fieldbus Coupler?
The WAGO 750-375 is an advanced PROFINET IO fieldbus coupler designed to integrate the modular WAGO I/O System 750/753 into industrial Ethernet automation networks. It enables reliable real-time communication between distributed field devices and PLC controllers using the widely adopted PROFINET industrial networking standard. :contentReference
During start-up the coupler automatically detects all connected digital, analogue and speciality I/O modules and creates a local process image. This image allows controllers to access field signals efficiently while maintaining deterministic communication across the network. :contentReference
The device includes an integrated two-port Ethernet switch, allowing network wiring in a line topology without additional switches or hubs. This simplifies installation and reduces infrastructure requirements in distributed automation systems. :contentReference
Automatic detection and configuration of connected I/O modules.
Integrated two-port Ethernet switch for simple line topology.
Supports mixed installations of digital, analogue and specialty modules.
Scalable architecture supporting up to 64 I/O modules per node.
Supports advanced PROFINET features such as device naming and diagnostics.
Key Features
PROFINET IO fieldbus coupler for WAGO I/O System 750/753.
10/100 Mbit/s Ethernet communication.
Integrated two RJ-45 Ethernet ports with switch.
Automatic creation of a local process image for connected modules.
Configuration via PC and PROFINET engineering tools.
DIP switch for device naming and configuration options.
DIN rail mounting for industrial control cabinets.
PROFINET Industrial Network Integration
PROFINET is widely used in industrial automation systems to connect PLC controllers, distributed I/O modules and industrial devices over Ethernet infrastructure. The WAGO 750-375 enables field-level sensors and actuators connected to WAGO I/O modules to communicate with controllers through the PROFINET protocol, allowing scalable distributed automation architectures. :contentReference
Within the WAGO I/O architecture, signals from connected modules are automatically mapped into the Ethernet process image and transmitted across the network. Digital signals are transferred bit-by-bit while analogue values are transmitted word-by-word, ensuring efficient communication with PLC systems. :contentReference
Typical Applications
Distributed PLC I/O systems using PROFINET networks.
Industrial machine automation.
Factory automation and production lines.
Process monitoring and control systems.
Integration of sensors, actuators and analogue devices.
Technical Specifications
Voltage
24 V
IP Rating
IP20
Series
WAGO I/O System 750 / 753
Device type
PROFINET IO fieldbus coupler
Communication protocol
PROFINET IO
Ethernet speed
10 / 100 Mbit/s
Network connection
2 × RJ-45 Ethernet
Transmission method
100Base-TX
Maximum modules per node
64
Maximum modules with bus extension
up to 250
Process image
up to 512 bytes input / 512 bytes output
Supply voltage
24 V DC (−25% to +30%)
Transmission medium
Twisted pair S-UTP Cat.5
Maximum network segment length
100 m
Mounting
DIN rail (EN 60715)
Operating temperature
approx. 0 °C to +55 °C
Ingress protection
IP20
HS Code
85176200
Country of Manufacture
Germany
Frequently Asked Questions
What does the WAGO 750-375 coupler do?
It connects WAGO I/O System 750/753 modules to a PROFINET IO network, enabling PLC systems to communicate with distributed field devices.
How many I/O modules can be connected?
The coupler supports up to 64 I/O modules directly and up to 250 modules with bus extensions.
Why are two Ethernet ports included?
The integrated switch allows devices to be connected in line topology without additional network switches.
What type of data can the coupler handle?
The coupler supports digital, analogue and complex I/O modules with data transferred bit-by-bit or word-by-word depending on the module type.
Where is the coupler installed?
The coupler is installed at the beginning of a WAGO I/O node on a DIN rail inside PLC control cabinets or distributed automation systems.
Trusted by Automation Engineers
WAGO PROFINET fieldbus couplers are widely used by automation engineers and system integrators to connect distributed I/O modules to industrial Ethernet control networks.
Voltage
24 V
IP Rating
IP20
Series
WAGO I/O System 750 / 753
Device type
PROFINET IO fieldbus coupler
Communication protocol
PROFINET IO
Ethernet speed
10 / 100 Mbit/s
Network connection
2 × RJ-45 Ethernet
Transmission method
100Base-TX
Maximum modules per node
64
Maximum modules with bus extension
up to 250
Process image
up to 512 bytes input / 512 bytes output
Supply voltage
24 V DC (−25% to +30%)
Transmission medium
Twisted pair S-UTP Cat.5
Maximum network segment length
100 m
Mounting
DIN rail (EN 60715)
Operating temperature
approx. 0 °C to +55 °C
Ingress protection
IP20
HS Code
85176200
Country of Manufacture
Germany
No documents available for this product.
Delivery
We offer fast UK delivery on all stocked items. Orders placed before 3pm Monday to Friday are eligible for next-day delivery.
Standard delivery: 2–3 working days
Next-day delivery: available on in-stock items when ordered before 3pm
Express options available — contact us for details
Returns
If you need to return an item, please contact our sales team within 30 days of receipt. Items must be returned unused in their original packaging.
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
Priority sourcing and supply support
Flexible payment terms for qualifying organisations
Support for engineering, maintenance, and operations
500 +
Stock lines ready to ship
1,000 +
Same day dispatches
3500 +
Customers supported
28
Trusted Manfacturers
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Common questions about our products and support
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We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...