WAGO 750-316/300-000 Modbus RTU fieldbus coupler with RS-232 interface for connecting WAGO I/O System 750/753 modules to Modbus automation networks.
£418.99
The WAGO 750-316/300-000 is a Modbus RTU fieldbus coupler designed to connect the modular WAGO I/O System 750/753 to a Modbus network via an RS-232 communication interface. Acting as the communication gateway between field devices and the automation controller, the coupler exchanges process data between connected I/O modules and the Modbus master system.
The coupler automatically detects all connected digital, analogue and specialty modules and builds a local process image based on the installed module order. Digital signals are transmitted bit-by-bit, while analogue and specialty module data is transferred as words or bytes for efficient communication across the Modbus network. :contentReference
Designed for scalable automation architectures, the coupler can support up to 64 connected I/O modules within a single node, enabling flexible distributed control systems for machine automation, building systems and industrial process control. :contentReference
Fieldbus couplers act as the communication bridge between distributed I/O modules and central control systems. The WAGO 750-316/300-000 enables sensors, actuators and automation equipment connected to WAGO I/O modules to communicate with PLC systems using the Modbus RTU protocol.
Within the WAGO I/O System architecture, the coupler automatically manages data exchange for all connected modules. Digital signals are transmitted bit-by-bit while analogue values are transferred as words or bytes within the process image created by the coupler. :contentReference
| Voltage | 24 V |
|---|---|
| IP Rating | IP20 |
| Series | I/O System 750 / 753 |
| Device type | Fieldbus coupler |
| Communication protocol | Modbus RTU |
| Communication interface | RS-232 |
| Transmission speed | up to 115.2 kBd |
| Maximum modules per node | 64 |
| Maximum Modbus slaves | up to 247 devices per master |
| Supply voltage | 24 V DC |
| Power jumper contact current | up to 10 A |
| Fieldbus connection | 9-pin D-Sub connector |
| Mounting | DIN rail (EN 60715) |
| Operating temperature | approx. 0 °C to +55 °C |
| Ingress protection | IP20 |
| HS Code | 85176200 |
| Country of Manufacture | Germany |
It connects the WAGO I/O System 750/753 to a Modbus RTU network and manages communication between the PLC and connected I/O modules.
The coupler supports up to 64 connected I/O modules within a single distributed I/O node.
The coupler communicates using the Modbus RTU protocol via an RS-232 interface.
Yes. It supports mixed configurations of digital, analogue and specialty modules connected to the WAGO I/O system.
The coupler is installed at the start of a WAGO I/O node on a DIN rail inside a PLC control cabinet or distributed automation system.
WAGO fieldbus couplers are widely used by machine builders and automation engineers to integrate distributed I/O modules into industrial control networks.
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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...