Why Choose the WAGO 750-650 RS-232 Serial Interface Module?
The WAGO 750-650 is a compact RS-232 serial interface module designed for integration within the WAGO I/O System 750. It allows PLC and automation controllers to communicate directly with devices that use a standard RS-232 serial interface, such as barcode scanners, printers, measurement equipment and industrial controllers.
The interface operates according to recognised serial communication standards including TIA/EIA-F and CCITT V.28, ensuring compatibility with a wide range of industrial serial devices. The module supports full-duplex communication up to 9600 baud, enabling reliable bidirectional data exchange between field devices and the control system. :contentReference
Installed on a DIN rail as part of a modular I/O node, the 750-650 enables serial communication to be incorporated directly into fieldbus-based automation architectures, reducing the need for separate gateway hardware.
Key Advantages
- Integrated RS-232 communication interface for automation systems.
- Enables connection of serial devices such as scanners, printers and sensors.
- Full-duplex data communication for simultaneous transmit and receive.
- Reliable operation with electrically isolated serial signals.
- Compact 12 mm DIN rail module for WAGO I/O System 750.
- Maintenance-free wiring via CAGE CLAMP® spring terminals.
Key Features
- RS-232 serial interface module.
- Full-duplex communication channel (TxD / RxD).
- Baud rate: up to 9600 baud.
- Data format: 8 data bits, no parity, 1 stop bit.
- Input buffer approx. 120 bytes, output buffer approx. 16 bytes.
- Electrical isolation between system and field signals.
- LED indicators for function, transmit and receive status.
- Designed for the WAGO I/O System 750 automation platform.
Serial Communication in Industrial Automation
Serial communication remains widely used in industrial environments for connecting measurement devices, legacy controllers and specialised instrumentation. Interfaces such as RS-232 provide simple, reliable communication between automation equipment and peripheral devices.
Modules like the WAGO 750-650 allow these serial devices to be integrated directly into distributed control systems. By transferring serial data through the fieldbus controller, engineers can incorporate barcode scanners, weighing systems, laboratory instruments and diagnostic tools into PLC-based automation networks.
Typical Applications
- Integration of serial instruments and sensors.
- Communication with barcode scanners and printers.
- Connecting weighing systems and measurement devices.
- Data exchange with legacy RS-232 industrial equipment.
- Industrial monitoring and diagnostic systems.
