Product Details

The XYCOM 97951-002 is a discontinued rack-mounted 128K memory expansion board, also marked as 2112-MEM, designed for XYCOM legacy industrial controller and CNC rack systems. It serves as an auxiliary memory extension module to expand the available RAM capacity of the host CPU board, providing extra storage space for control programs, axis motion parameters, runtime data buffers and production event logs. This memory board connects to the main processor through the dedicated backplane bus, supporting stable data read and write operations during real-time control cycles. It integrates memory array chips, address decoding logic, data bus driving circuits and noise filtering components, which can suppress electromagnetic interference from servo drives and inverters on site, avoiding data corruption and memory read errors under harsh industrial operating conditions. On-board jumpers can be adjusted to set the memory base address and bus timing, preventing address conflicts with other CPU, I/O and communication boards installed in the same rack. The front side is equipped with simple LED indicators for power status and bus activity, helping technicians quickly judge power supply faults and bus communication anomalies during installation and routine maintenance. The PCB adopts industrial-grade components and EMC protection design, resisting vibration, dust and temperature fluctuation in machining workshops and chemical automation sites for long-term continuous operation. This legacy memory expansion board is mainly supplied as spare replacement and upgrade parts for existing XYCOM control systems. Users need to confirm host CPU compatibility, backplane pin definition and memory mapping configuration before installation. A conformal coated version is optional for high humidity, dusty and corrosive industrial environments. This model is widely used in CNC machine tool control racks, production line controllers and old DCS system memory upgrade projects.

This memory expansion board adopts standard single-slot rack board structure. It draws power from the control system backplane. LED indicators display power status and bus activity for convenient on-site inspection. The operating temperature range is 0°C to 50°C, storage temperature ranges from -40°C to 85°C, relative humidity 5% to 95% non-condensing. It complies with industrial shock, vibration and EMC standards and has CE certifications. It supports memory address configuration backup for fast recovery after hardware replacement.

This XYCOM 97951-002 memory expansion board is widely applied in legacy CNC and process control racks and automation equipment upgrade projects. It expands the memory capacity of the master controller to support larger control programs and data buffering. As a reliable discontinued spare part, the XYCOM 97951-002 retains original bus timing and signal compatibility, and effectively reduces the renovation cost of legacy industrial control system maintenance.