GE VMIVME7459 - VMEbus Intelligent Multi-Protocol Serial Communication Controller

GE VMIVME7459 – VMEbus Intelligent Multi-Protocol Serial Communication Controller

In stock

Product Introduction:
The GE VMIVME7459 is an intelligent serial communication controller module for VMEbus systems. The “7459” designation identifies this board as a multi-protocol serial controller capable of handling multiple communication protocols simultaneously on a single board. Unlike simple UART boards that only support RS-232, the 7459 contains a powerful on-board processor that manages complex protocols like Modbus RTU/TCP, DNP 3.0, Profibus DP, and GE SRTP (Series Remote Terminal Protocol) in hardware. This offloads the main CPU from the burden of managing serial traffic, allowing the VMEbus host to focus on control logic while the 7459 handles all communication autonomously.

Technical Specifications:
Board Type: VMEbus Intelligent Multi-Protocol Serial Communication Controller
Revision: 7459
Serial Ports: 8 RS-232/RS-485 ports (configurable as 4 RS-232 + 4 RS-485, or 8 RS-485)
Baud Rates: 300 to 115200 bps (configurable per port)
Protocols: Modbus RTU, Modbus TCP, DNP 3.0, Profibus DP, GE SRTP, ASCII, BCD
On-Board Processor: 32-bit RISC processor for protocol handling
Memory: 4MB RAM for buffer storage (up to 10,000 messages queued)
VMEbus Interface: D32/A32 with interrupt capability
Ethernet: Optional 10Base-T port for Modbus TCP and DNP over IP
Isolation: 1500V RMS opto-isolated on all serial ports
Power Consumption: Approximately 5 Watts
Form Factor: 3U VMEbus Eurocard

Functional Features:
Multi-Protocol Support: Handles up to 4 different protocols simultaneously on different ports.
On-Board Protocol Processing: The 32-bit processor executes protocol stacks in hardware, not on the host CPU.
Message Queuing: Stores up to 10,000 messages in on-board RAM, preventing data loss during host CPU bus contention.
Auto-Retry: Automatically retries failed communications up to 10 times before reporting an error.
Time Stamping: Adds millisecond-resolution timestamps to every message for event sequencing.
Diagnostic Counters: Tracks error counts, retry counts, and message throughput for each port.

Application Scenarios:
SCADA Gateways: Serves as the communication gateway between a VMEbus controller and a SCADA system.
Substation Automation: Manages communication with IEDs (Intelligent Electronic Devices) in electrical substations using DNP 3.0.
Remote Terminal Units (RTUs): Collects data from remote field devices via Modbus and reports to the central control system.
Building Automation: Controls HVAC systems, lighting, and fire alarms via BACnet and Modbus.
Legacy Integration: Connects modern VMEbus controllers to legacy devices that only support serial protocols.