Product Description:

The X67UM4389 is an analog/digital I/O module manufactured by B&R Automation for the X67 Analog Input Output Modules series. It combines voltage outputs, discrete inputs, and discrete outputs in one compact block that can be mounted directly on machines outside the control cabinet. Through the X67 bus coupler, it connects to the main controller and transfers process data, making it suitable for decentralized automation where short sensor and actuator leads improve signal integrity and reduce wiring overhead. It is typically installed on packaging, material-handling, or assembly lines to translate field-level signals into controller-readable words while tolerating vibration and ingress present on the machine frame.

The module supplies ±10 VDC analog reference signals across 4 output channels, each represented in the process image by one 16-bit word. A conversion depth of 11-bit + sign yields 2,048 positive and 2,048 negative steps, enabling precise positioning of proportional valves or speed setpoints for drives. Twelve digital inputs are sampled simultaneously and returned to the controller as a single 12-bit field, allowing compact status mapping for sensors such as limit switches or photo eyes. On the actuator side, the unit offers four digital outputs, and each path can deliver up to 0.5 A, which is sufficient for pilot solenoids, stack lights, or small relays. By integrating these mixed-signal functions, the slice reduces the number of separate terminal modules required in the field.

For cyclic data exchange, the slice contributes two input bytes and a frame of 10 output bytes, keeping bus utilization low when dozens of modules are daisy-chained. All digital input channels operate at 24 VDC in a sink configuration, while the outputs use a source topology that feeds load current directly from the module’s supply rail. The state of every output is mirrored inside a diagnostic register that occupies a single 1 byte element, enabling fast fault detection without extra programming overhead.