Product Description:

The X67DM1321 is an analog input/output module produced by B&R Automation for the X67 Analog Input/Output Modules series. This compact field-mounted unit extends distributed machine control by providing both sensor acquisition and actuator driving within a single housing. Designed to sit directly on a machine frame, it links to a main PLC over the X2X real-time bus, reducing cabinet wiring. In an automation cell, the module’s mixed I/O channels allow temperature, pressure, or position feedback to be digitized while simultaneously switching valves, coils, or indicator lamps.

The eight digital I/O channels can each source or sink up to 0.5 A, supporting inductive or resistive loads without external relays. High-speed counting tasks are handled by the integrated counter that accepts pulse trains up to 50 kHz, so shaft encoders or flow meters can be connected directly. A local process image holds 8 bits for the digital inputs and outputs, and write access is buffered through a 2-word digital output register. To assist deterministic masking operations, a 16-bit I/O mask register is provided. Two independent event counters are available for edge-triggered diagnostics, and the module draws only 0.75 W from the X2X link to power its logic section.

The input circuitry includes a configurable digital filter whose time constant is selected through register 18, allowing noise suppression to be matched to signal characteristics. For field supply, the module operates from the machine’s nominal 24 VDC rail, drawing an internal budget of 2.50 W to service the optocouplers and status LEDs while isolating the channels from bus electronics. With these resources, the device supports the two onboard event counters, maintains accurate debounce filtering, and supplies solid-state outputs without exceeding the specified thermal envelope.