Unitronics ULK-EIP-4A4BP6 IO-Link Master with Ethernet/IP communication, 8 IO-Link ports, IP67 protection and support for Class A and Class B devices in industrial automation systems.
Why Choose the Unitronics ULK-EIP-4A4BP6 IO-Link Master?
The Unitronics ULK-EIP-4A4BP6 is an advanced industrial IO-Link Master module designed to connect smart sensors and actuators directly to PLC-based automation systems via Ethernet/IP communication. As part of the Unitronics UniStream® IO-Link ecosystem, this field-mountable device provides seamless integration between IO-Link devices and industrial control networks while simplifying machine wiring and improving diagnostic capabilities.
Featuring 8 IO-Link ports consisting of 4 Class A ports and 4 Class B ports, the ULK-EIP-4A4BP6 offers exceptional flexibility for connecting both sensors and higher-power actuators. Its rugged IP67-rated enclosure allows installation directly on machinery or production equipment, eliminating the need for additional control cabinet space and reducing installation costs.
Designed for Industry 4.0 and smart manufacturing environments, the ULK-EIP-4A4BP6 enables real-time device monitoring, remote parameterisation and predictive maintenance capabilities. With robust Ethernet/IP connectivity and industrial-grade construction, it provides a reliable foundation for modern distributed automation architectures.
Key Advantages
Industrial IO-Link Master with Ethernet/IP communication.
8 IO-Link ports comprising 4 Class A and 4 Class B ports.
Direct integration with PLCs and industrial Ethernet networks.
IP67-rated housing suitable for harsh industrial environments.
Supports both sensors and higher-current actuators.
Reduces wiring complexity through decentralised installation.
Provides advanced diagnostics and device parameterisation.
Ideal for Industry 4.0 and predictive maintenance applications.
Key Features
Unitronics ULK-EIP-4A4BP6 IO-Link Master.
8 IO-Link ports (4 × Class A, 4 × Class B).
Ethernet/IP communication protocol.
M12 industrial connectors.
IP67 protection rating.
Supports field-mounted installation.
Advanced sensor and actuator diagnostics.
Real-time device monitoring and configuration.
Compatible with Unitronics UniStream® PLC systems.
Smart Sensor Integration for Modern Automation
The ULK-EIP-4A4BP6 acts as the communication gateway between IO-Link devices and Ethernet/IP automation networks. By consolidating multiple sensors and actuators through a single master device, it simplifies machine architecture while enabling advanced diagnostics and device management.
Its combination of Class A and Class B ports provides flexibility for connecting standard sensors as well as higher-power actuators. The rugged IP67 construction allows installation directly on machinery, reducing cable runs and improving system scalability across industrial automation projects.
Typical Applications
Industrial machine automation.
Packaging and assembly machinery.
Material handling and conveyor systems.
Smart factory and Industry 4.0 installations.
Distributed sensor and actuator networks.
OEM machinery and equipment manufacturing.
Process monitoring and control systems.
Predictive maintenance applications.
Technical Specifications
Voltage
30 V
IP Rating
IP67
Product type
IO-Link Master Module
Communication protocol
Ethernet/IP
IO-Link ports
8
Port configuration
4 × Class A, 4 × Class B
Supply voltage
18-30 V DC
Maximum total current
12 A
Protection rating
IP67
Connector type
M12 industrial connectors
Maximum IO-Link cable length
20 m
Mounting type
Field-mounted / machine-mounted
Dimensions (L × W × H)
approx. 205 × 60 × 34.5 mm
Weight
approx. 0.7 kg
Frequently Asked Questions
What is the Unitronics ULK-EIP-4A4BP6 used for?
The ULK-EIP-4A4BP6 is an IO-Link Master that connects multiple IO-Link sensors and actuators to PLC systems via Ethernet/IP communication.
How many IO-Link ports are available?
The module provides 8 IO-Link ports, including 4 Class A ports and 4 Class B ports.
What communication protocol does the module use?
The ULK-EIP-4A4BP6 communicates with automation systems using the Ethernet/IP protocol.
Can the module be mounted directly on machinery?
Yes. Its IP67-rated enclosure allows direct field installation on machines and production equipment.
What types of devices can be connected?
The IO-Link Master supports a wide range of IO-Link sensors, actuators and expansion hubs, including both Class A and Class B devices.
Trusted for Industrial Connectivity
Unitronics IO-Link Masters help automation engineers create intelligent, scalable and data-driven control systems by providing reliable connectivity between field devices and industrial Ethernet networks.
Voltage
30 V
IP Rating
IP67
Product type
IO-Link Master Module
Communication protocol
Ethernet/IP
IO-Link ports
8
Port configuration
4 × Class A, 4 × Class B
Supply voltage
18-30 V DC
Maximum total current
12 A
Protection rating
IP67
Connector type
M12 industrial connectors
Maximum IO-Link cable length
20 m
Mounting type
Field-mounted / machine-mounted
Dimensions (L × W × H)
approx. 205 × 60 × 34.5 mm
Weight
approx. 0.7 kg
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
● frequently asked questions
Common questions about our products and support
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
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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...