Wago 750-653 Serial interface RS-485 / 9600 / N / 8 / 1

Why Choose the WAGO 750-653 RS-485 Serial Interface Module?

The WAGO 750-653 is a compact RS-485 serial communication interface module designed for seamless integration within the WAGO I/O System 750. It enables PLC controllers and automation systems to communicate directly with devices that use the RS-485 communication standard, including industrial sensors, drives, energy meters and distributed control equipment.

The module’s integrated serial interface connects field devices directly to the control unit via the fieldbus coupler, allowing reliable data exchange without requiring external gateways. The interface operates according to recognised standards such as TIA/EIA-485-A and DIN 66259, ensuring compatibility with a wide range of industrial communication devices. :contentReference

With electrically isolated communication signals and strong interference immunity, the module provides dependable operation in demanding industrial environments while supporting long-distance RS-485 communication networks.

Key Advantages

• Integrated RS-485 serial communication interface.
• Reliable communication for distributed industrial devices.
• High immunity to electrical interference through isolated signals.
• Supports long-distance communication up to approximately 1000 m.
• Compact module designed for WAGO I/O System 750 installations.
• Maintenance-free wiring using CAGE CLAMP® spring terminals.

Key Features

• RS-485 / RS-422 serial interface.
• Full-duplex communication channel (TxD / RxD).
• Default communication speed of 9.6 kBd.
• Standard configuration: 8 data bits, no parity, 1 stop bit.
• Integrated communication buffers for stable data transfer.
• Status LEDs for transmit, receive and module function.
• Direct integration with WAGO I/O System 750 controllers.
• DIN rail mounting for modular industrial automation systems.

Technical Specifications

• Manufacturer: WAGO
• Series: I/O System 750
• Model: 750-653
• Module type: RS-485 serial interface
• Supported signals: RS-422 / RS-485
• Transmission channel: 1 TxD / 1 RxD (full duplex)
• Baud rate: approx. 9.6 kBd
• Data format: 8 data bits, no parity, 1 stop bit
• Line length: up to approx. 1000 m using twisted pair cable
• Input buffer: approx. 120 bytes
• Output buffer: approx. 16 bytes
• System supply voltage: 5 V DC via internal system bus
• Current consumption: approx. 65 mA
• Isolation voltage: approx. 500 V between system and field
• Connection technology: WAGO CAGE CLAMP®
• Mounting: DIN-35 rail
• Protection rating: IP20
• Operating temperature: 0 to 55 °C
• Module width: approx. 12 mm

RS-485 Communication in Industrial Automation

RS-485 is widely used in industrial communication systems because it allows multiple devices to share a single communication line while supporting long cable distances. The technology is commonly used for serial industrial protocols such as Modbus RTU and other distributed device networks.

The WAGO 750-653 provides a reliable interface between RS-485 field devices and PLC automation systems. By transferring serial data through the fieldbus coupler, engineers can integrate instrumentation, controllers and monitoring devices into distributed automation architectures. :contentReference

Typical Applications

• Connecting RS-485 industrial devices and sensors.
• Integration of Modbus RTU field instruments.
• Communication with energy meters and monitoring systems.
• Distributed industrial control networks.
• Industrial process monitoring and diagnostics.

Trusted by Automation Engineers

WAGO I/O System 750 communication modules allow engineers to integrate serial field devices and distributed instrumentation into flexible PLC-based automation systems.