APC620 B & R Automation
Wake Industrial LLC is not an authorized distributor of this product.
The B & R Automation APC620 is part of the APC Industrial Automation PC Units series and features a Winbond W83627HF hardware monitor. This unit supports up to 16 panels and offers 4 key layers with 128 keys per layer. It has a 32-bit register width and a watchdog max time of 65535 milliseconds.
Internal Product Review
The APC620 is a B & R Automation industrial automation PC unit with a 32-bit register width and Winbond W83627HF hardware monitoring. Support for 16 panels and a watchdog max time of 65535 ms gives the platform strong HMI scalability and dependable supervisory control. A well-engineered control platform for applications that benefit from stable monitoring and broad panel integration.
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Product Description:
The APC620 is an industrial PC unit produced by B&R Automation within the APC Industrial Automation PC Units series. Designed to host human-machine interface logic and real-time control tasks, it ties operator panels, field devices, and supervisory systems together on a single computing node. By integrating CPU resources and I/O expansion in a compact enclosure, the APC620 serves as the central processing element in distributed automation lines, where deterministic execution and multi-panel support are required.
The board-level health of the unit is supervised by the Winbond W83627HF hardware monitor, allowing temperature, voltage, and fan signals to be sampled by the controller. I²C transactions are limited to 16 bytes, a cap that keeps peripheral register exchanges short and bus arbitration predictable. The keyboard matrix is divided into 4 logical key layers, and each layer can deliver 128 distinct key codes so machine functions remain segregated during operation. LED status data is assembled in a 32-byte matrix buffer before being shifted to the display rows, which minimizes interrupt overhead. Memory-mapped expansion modules share a start address of 4100h, giving the real-time kernel a fixed offset when servicing the supported operator panels.
The visualization subsystem mirrors the key structure: it addresses 4 LED layers with 128 diodes per layer, compressing each diode’s on-off and blink information into 2-bit state fields. A dedicated window of 128 bytes is allocated to the MTCX I/O segment, and the CPU uses a 32-bit register width so a complete status word moves in one atomic cycle. Panels can coexist on the backplane without address collision because the controller maps each unit to a separate index. System availability is guarded by a watchdog timer that can be configured anywhere between 1 ms and 65535 ms, giving flexibility when setting fault-recovery thresholds.
