5AC901.BX02-01 B & R Automation
Wake Industrial LLC is not an authorized distributor of this product.
The B & R Automation 5AC901.BX02-01 is part of the 5AC CNC Addon Modules series and features a 32-bit PCI bus width along with a PCI clock of 33 MHz. It includes both a PCI half-size card format and a PCIe half-size card format, supporting PCI standard 2.2 and PCIe standard 2.0. The module supports a PCIe link speed of x8 at 4 GB/s and offers a PCIe-to-PCI bridge feature.
Internal Product Review
The 5AC901.BX02-01 is a B & R Automation CNC addon module featuring a PCIe-to-PCI bridge and a half-size card format. PCIe 2.0 support and an x8 link speed help deliver efficient integration in higher-bandwidth control architectures. A 32-bit PCI bus makes the module especially valuable for mixed-generation CNC systems.
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Product Description:
The industrial PC accessory 5AC901.BX02-01 is manufactured by B&R Automation and belongs to the 5AC CNC Addon Modules series. This half-length board is intended for installation beside the main motion controller so the host can handle additional interpolation, buffering, and I/O tasks that are common in CNC machining cells. By adding the required hardware interface inside an automation rack, the module supports deterministic communication between the computer, drives, and feedback devices used in a closed-loop production system.
On the 5 V parallel bus side, the board follows the PCI 2.2 standard and connects to a 32-bit data path clocked at 33 MHz. Because the card uses a half-size format, it fits compact industrial PCs without blocking adjacent connectors, which helps when the control cabinet has limited depth. The PCI Express connection supports up to 4 GB/s of bandwidth, giving the motion kernel fast access to axis state data during high-speed interpolation. A hardware arbiter manages bus mastering so tool-path blocks can be transferred through DMA while the CPU continues handling visualization and control tasks.
The physical layout reserves one PCI slot and one PCIe slot, so existing legacy cards can remain in place while additional serial bandwidth is added. The PCI Express interface complies with revision 2.0, and the lane negotiation logic can downshift to x1, x4, x8 widths when the host backplane provides fewer traces. A dedicated PCIe-to-PCI bridge synchronizes transactions between the two buses, allowing position data to move between interfaces without extra translation steps. The board layout also helps maintain airflow around neighboring drives in tightly packed control cabinets.
