Product Details

The XYCOM 4800-E7 is a discontinued Modbus protocol expansion card, designed to add reliable Modbus communication capability for XYCOM industrial panel PCs and VME control systems. This communication board serves as a protocol bridge, enabling the host controller to exchange real-time data, register values and status signals with Modbus slave devices such as remote I/O modules, transmitters, drives and third-party field instruments. It supports standard Modbus RTU protocol over RS232 or RS485 serial bus, and can work as Modbus master or slave according to system configuration. The onboard circuit adopts industrial-grade isolation design to suppress common-mode noise and transient interference on long field wiring, which effectively reduces communication dropout in high electromagnetic interference workshop environments. The front panel is equipped with LED indicators to show power status, transmit data, receive data and fault alarm, which helps maintenance technicians quickly judge bus activity and diagnose wiring or protocol mismatch issues during commissioning and routine inspection. It follows standard ISA bus form factor, compatible with the expansion slots of XYCOM 3400, 3500, 3600 series panel PCs and matching VME host racks. This legacy communication card is mainly supplied as spare replacement parts for existing automation systems. Users need to confirm the bus address, baud rate, parity setting and Modbus register mapping before installation. A conformal coated version is optional for high humidity, dusty industrial sites. This model is widely used in chemical process skids, oil & gas auxiliary control, wastewater treatment stations and old automation production line renovation projects.

This Modbus communication expansion card adopts standard ISA board form factor. It draws power from the host backplane bus, with built-in serial transceiver and isolation circuit. LED indicators display power status, TX/RX activity and fault 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 communication parameter and node address backup for fast recovery after hardware replacement.

This XYCOM 4800-E7 Modbus expansion card is widely applied in legacy DCS retrofit, Modbus network expansion and field instrument communication integration projects. It provides stable serial Modbus data transmission for the whole control system. As a reliable discontinued communication spare part, the XYCOM 4800-E7 retains original bus resource allocation and protocol configuration logic, and effectively reduces the renovation cost of legacy industrial control system maintenance.