WAGO 750-891 4th generation Modbus TCP programmable controller featuring dual Ethernet ports, 4 MB program memory, 4 MB data memory and modular I/O expansion capabilities for industrial automation systems.
£555.62
The WAGO 750-891 is a versatile 4th generation Modbus TCP programmable controller designed for industrial automation, machine control and distributed I/O applications. As part of the advanced WAGO I/O System 750 series, this controller combines powerful PLC functionality with Ethernet networking and modular I/O integration, providing a scalable solution for modern industrial control systems.
Engineered for reliable operation within Ethernet-based automation networks, the controller supports Modbus TCP and Modbus UDP communications while featuring dual Ethernet interfaces and an integrated switch. This allows efficient line topology networking without requiring additional switches or hubs, simplifying installation and reducing infrastructure costs.
Featuring a powerful 32-bit processor, 4 MB program memory, 4 MB data memory and support for up to 250 I/O modules per node, the WAGO 750-891 provides an ideal platform for machine builders, OEMs and automation engineers seeking reliable and flexible control solutions.
The WAGO 750-891 automatically detects connected I/O modules and creates a local process image containing both analogue and digital data. This architecture simplifies system configuration while providing fast and reliable data processing for industrial automation applications.
The integrated Ethernet switch enables efficient line topology configurations, eliminating the need for additional networking devices. Combined with support for IEC 61131-3 programming languages, the controller provides a flexible platform for advanced automation projects.
| Voltage | 24 V |
|---|---|
| IP Rating | IP20 |
| Series | I/O System 750 |
| Product type | Modbus TCP Programmable Controller |
| Generation | 4th Generation |
| Processor | 32-bit CPU |
| Communication protocols | Modbus TCP, Modbus UDP |
| Ethernet protocols | HTTP(S), BootP, DHCP, DNS, SNTP, SNMP, (S)FTP |
| Ethernet ports | 2 × RJ45 |
| Ethernet speed | 10/100 Mbit/s |
| Program memory | 4.096 MB |
| Data memory | 4.096 MB |
| Non-volatile memory | 32 KB |
| Supply voltage | 24 V DC |
| Input current | Approx. 500 mA |
| Maximum I/O modules | 250 per node |
| Maximum modules without bus extension | 64 |
| Protection rating | IP20 |
| Operating temperature | 0°C to +55°C |
| Mounting type | DIN rail |
| Dimensions (H × W × D) | approx. 100 × 61.5 × 71.9 mm |
| Weight | approx. 150 g |
| HS Code | 85371091 |
| Country of Manufacture | Germany |
The controller is used for industrial automation applications requiring PLC functionality, Modbus TCP communication and distributed I/O management.
The controller supports Modbus TCP, Modbus UDP and standard Ethernet protocols including HTTP(S), DHCP, DNS, SNMP and FTP.
The WAGO 750-891 features 4.096 MB of program memory, 4.096 MB of data memory and 32 KB of non-volatile memory.
The controller includes two integrated RJ45 Ethernet ports supporting 10/100 Mbit/s communication with an integrated Ethernet switch.
Yes, the controller supports the complete WAGO 750 and 753 Series modular I/O range and can support up to 250 modules per node depending on system configuration.
WAGO 4th generation controllers are widely used throughout industrial automation environments where reliable Ethernet communications, scalable I/O integration and flexible PLC functionality are essential for efficient machine control and long-term operational reliability.
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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...