XPS-483B Okuma
Wake Industrial LLC is not an authorized distributor of this product.
The Okuma XPS-483B belongs to the E4809 CNC Boards series and supports three character modes with four color graphic screens. It features three interface sections and targets video output to the NC Operation Panel CRT. The board uses a CRP address range of FB0000-FCFFFF and a graphic I/O span of 32 bytes.
Internal Product Review
The XPS-483B is an Okuma E4809 CNC board designed for NC operation panel CRT video output. Support for 3 character modes and 4 color graphic screens gives this board excellent display flexibility in established CNC systems. Three interface sections and a 128 Kbyte CRP address span make the unit a strong choice for stable control-panel integration.
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Product Description:
The XPS-483B is a plug-in printed-circuit assembly produced by Okuma for the E4809 CNC Boards series. Installed in an OSP control rack, the board performs graphics processing that drives cursor positioning, menu rendering, and status windows on the numerical control’s operator monitor. By translating motion and diagnostic data from the main CPU into raster images, it supports human-machine interaction during part-program editing, cycle initiation, and alarm acknowledgment within automated machining centers.
Text handling relies on three selectable character modes, allowing the board to switch font density for status lines, G-code listings, or operator prompts without reallocating memory. For graphic content, the controller addresses up to four graphic screens with color support, so tool-path overlays, spindle-load bars, and PLC diagnostics can appear on separate pages that refresh independently. Frame-buffer data is mapped into the system bus through the FB0000-FCFFFF segment, which serves as the CRP address range. Its contiguous capacity of 128 KB holds bitmap and attribute tables accessed by DMA cycles, while three interface sections separate video, character, and I/O transactions to minimize contention with the motion processor.
Interaction with peripheral buttons is handled through a memory-mapped register block at FF7F20-FF7F3F, which serves as the graphic I/O range. The controller allocates 32 bytes to this area, providing space to latch key states, write LED patterns, and assert display interrupts without loading the main fieldbus. Video timing and blanking signals are routed to the NC operation panel CRT, matching the sweep rates used in legacy OSP cabinets without requiring external converters. The board uses signal names consistent with the E4809 line, maintaining clear references for rack wiring and display connections throughout the control system.
