Advantech PCI-1784 4 Axis Quadrature Encoder Counter Card

Advantech PCI-1784 is a 4-axis quadrature encoder and counter card for PCI buses that decodes incremental encoder signals and provides four independent counters for precise position tracking in motion-control systems. Each channel includes a quadrature decoding circuit that processes A and B inputs and an index input to reset the corresponding counter, enabling reliable position measurement and coordinated multi-axis feedback. The card houses four 32‑bit counters and interfaces with the PCI bus for high-speed access to counts, status, and control, supporting deterministic readback and integration with Advantech software libraries for Windows environments. This configuration makes it well suited for CNC, robotics, and automation applications where four independent encoder streams are used to monitor axis position, velocity, and reach limits in real time. The PCI-1784 is designed to slot into standard PCI PCI‑bus systems and work alongside Advantech data-acquisition and control modules, providing a compact, high-precision solution for encoder-based motion control and testing rigs.