Why Choose the WAGO 750-815/300-000 MODBUS Controller?
The WAGO 750-815/300-000 is a versatile MODBUS RTU programmable logic controller (PLC) designed for decentralised industrial automation, machine control and distributed I/O applications. As part of the trusted WAGO-I/O-SYSTEM 750 series, it combines PLC functionality, fieldbus communication and I/O management within a compact DIN rail mounted controller.
Designed for OEMs, panel builders and automation engineers, the controller enables local processing of control tasks while reducing communication traffic on the fieldbus network. Its integrated MODBUS RTU master functionality allows direct communication with up to 247 fieldbus devices, making it ideal for complex industrial control systems.
Featuring RS-485 communication at up to 115.2 kBd, a 16-bit processor and compatibility with a wide range of WAGO I/O modules, the 750-815/300-000 delivers reliable performance for industrial automation applications. The compact design simplifies installation while supporting scalable system expansion.
Key Advantages
Integrated PLC and MODBUS RTU controller in a single device.
RS-485 communication supporting data rates up to 115.2 kBd.
Supports up to 247 MODBUS devices as a master.
Compatible with the extensive WAGO-I/O-SYSTEM 750 module range.
Reduces network traffic through local signal processing.
Programmable fault response during fieldbus communication failures.
Compact DIN rail mounted design.
Suitable for decentralised industrial automation architectures.
Key Features
WAGO-I/O-SYSTEM 750 Controller.
MODBUS RTU communication protocol.
RS-485 interface with data rates up to 115.2 kBd.
16-bit processor architecture.
IEC 61131-3 programming support.
Compatible with up to 64 I/O modules per node.
Supports up to 6000 digital I/O points.
LED diagnostics and status indicators.
DIN rail mounting.
IP20 protection rating.
Technical Specifications
Manufacturer: WAGO
Series: WAGO-I/O-SYSTEM 750
Model: 750-815/300-000
Product type: MODBUS RTU PLC Controller
Processor: 16-bit CPU
Communication protocol: MODBUS RTU
Communication interface: RS-485
Maximum baud rate: 115.2 kBd
Supply voltage: 24 V DC
Operating voltage range: 18 V DC to 31.2 V DC
Program memory: 32 kB
Data memory: 32 kB
Maximum I/O modules: 64 per node
Maximum fieldbus devices: 247
Protection rating: IP20
Mounting type: 35 mm DIN rail
Operating temperature: 0°C to +55°C
Dimensions (H × W × D): Approx. 100 × 50.5 × 71.1 mm
Weight: Approx. 189 g
Reliable MODBUS Control for Industrial Automation
The WAGO 750-815/300-000 provides decentralised control capabilities that help optimise automation system performance. By processing signals locally and managing connected I/O directly, the controller reduces communication overhead and improves response times for machine and process control applications.
Its support for IEC 61131-3 programming languages allows engineers to create sophisticated automation routines while maintaining compatibility with established industrial programming standards. The controller is particularly well suited to distributed control systems where flexibility and scalability are important.
Typical Applications
Industrial machine control.
Manufacturing automation systems.
Material handling and conveyor systems.
Process automation applications.
Distributed I/O architectures.
OEM machinery and equipment.
Building automation systems.
Industrial retrofit projects.
Technical Specifications
Voltage
24 V
IP Rating
IP20
Series
WAGO-I/O-SYSTEM 750
Product type
MODBUS RTU PLC Controller
Processor
16-bit CPU
Communication protocol
MODBUS RTU
Communication interface
RS-485
Maximum baud rate
115.2 kBd
Supply voltage
24 V DC
Operating voltage range
18 V DC to 31.2 V DC
Program memory
32 kB
Data memory
32 kB
Maximum I/O modules
64 per node
Maximum fieldbus devices
247
Protection rating
IP20
Mounting type
35 mm DIN rail
Operating temperature
0°C to +55°C
Dimensions (H × W × D)
Approx. 100 × 50.5 × 71.1 mm
Weight
Approx. 189 g
Frequently Asked Questions
What is the WAGO 750-815/300-000 used for?
The controller is used for industrial automation, machine control and distributed I/O applications requiring MODBUS RTU communication.
Which communication protocol does the controller support?
The unit supports MODBUS RTU communication over an RS-485 interface.
How many devices can be connected?
The controller can communicate with up to 247 MODBUS devices when operating as a master.
How many I/O modules can be connected?
Up to 64 WAGO I/O modules can be connected within a single node configuration.
What programming standard is supported?
The controller supports IEC 61131-3 programming languages including Ladder Diagram, Function Block Diagram and Structured Text.
Trusted by Automation Professionals Worldwide
WAGO MODBUS controllers are widely used throughout industrial automation systems where reliable communication, decentralised control and scalable I/O integration are essential for efficient operation.
Voltage
24 V
IP Rating
IP20
Series
WAGO-I/O-SYSTEM 750
Product type
MODBUS RTU PLC Controller
Processor
16-bit CPU
Communication protocol
MODBUS RTU
Communication interface
RS-485
Maximum baud rate
115.2 kBd
Supply voltage
24 V DC
Operating voltage range
18 V DC to 31.2 V DC
Program memory
32 kB
Data memory
32 kB
Maximum I/O modules
64 per node
Maximum fieldbus devices
247
Protection rating
IP20
Mounting type
35 mm DIN rail
Operating temperature
0°C to +55°C
Dimensions (H × W × D)
Approx. 100 × 50.5 × 71.1 mm
Weight
Approx. 189 g
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
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Stock lines ready to ship
1,000 +
Same day dispatches
3500 +
Customers supported
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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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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...