Product Details

The XYCOM XVME-400, PN 70400-001, is a discontinued single-height 3U VMEbus quad serial I/O module, designed for XYCOM legacy VME control racks and industrial serial communication systems. It is equipped with two Zilog Z8530 SCC serial communication controllers and provides four independent RS-232C serial ports, all routed through JK1 and JK2 front panel connectors, which distinguishes it from the P2 backplane-connected XVME-490 model. Each serial channel is fully programmable, supporting asynchronous, byte-synchronous and bit-oriented communication protocols, with independent baud rate generators and complete modem control signals for reliable connection with serial field devices. This module acts as a communication gateway between the VME master CPU and serial instruments, barcode readers, operator terminals, sensors and other serial peripherals, transmitting real-time status data and control commands in distributed automation systems. It follows IEEE 1014 VMEbus standard and operates as an A16:D08(O) VME slave device, supporting seven VME interrupt levels and multiple interrupt vectors to notify the host processor when data reception, transmission or error events occur. Users can configure base address, interrupt level and communication parameters via on-board jumpers and DIP switches to avoid address and interrupt conflicts with other VME modules installed in the same chassis. On-board surge protection and noise filtering circuits suppress electromagnetic interference from inverters and servo drives, ensuring stable serial data transmission in electrically noisy factory environments. The front panel is fitted with LED indicators for power status, bus activity and channel communication status, helping maintenance technicians quickly identify wiring faults, signal loss and communication errors during commissioning and routine inspection. The PCB adopts industrial-grade electronic components and reliable EMC protection design, capable of resisting vibration, dust and temperature fluctuation in machining workshops, power stations and chemical process plants. This legacy RS232 serial communication module is mainly supplied as spare replacement parts for existing XYCOM VME automation systems. Users need to confirm VME chassis compatibility, bus address allocation and serial wiring definition before installation. A conformal coated version is optional for high humidity, dusty and corrosive industrial sites. This model is widely used in CNC machine serial data exchange, test equipment communication, process monitoring terminals and old VME serial control system retrofit projects.

This quad serial communication module adopts standard 3U single-height VME rack mount structure. It draws power from the VME backplane. LED indicators display power status, bus activity and channel communication status 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 baud rate, interrupt and address configuration backup for fast recovery after hardware replacement.

This XYCOM XVME-400 serial communication module is widely applied in legacy VME control racks and industrial automation upgrade projects. It provides multi-channel RS232 serial data transmission and device interconnection for the VME master control system. As a reliable discontinued spare part, the XYCOM XVME-400 retains original VME bus timing and serial protocol compatibility, and effectively reduces the renovation cost of legacy industrial control system maintenance.