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GE VMIVME-9081 Intelligent I/O Controller
GE VMIVME-9081 Intelligent I/O Controller
Introduction:
The VMIVME-9081* provides a flexible, compact solution including user-friendly software utilities for the user who requires I/O products coupled with a preprogrammed single board computer (SBC) for effective turnkey operation. Multiple VMIVME-9081 can reside on a single Reflective Memory (RFM) link.
Features:
• Intel® Ultra Low Voltage Celeron® 1.07 GHz processor
• 512 MByte SODIMM
• Host interface options:
GE’s Reflective Memory (5550, 5576, 5565 and 5588)
10/100 Mbit Ethernet
Embedded (IIOC as slave CPU)
• Firmware provides all required support for scanning inputs, updating outputs, EU and data-type conversions, fault detection, fault isolation, and error reporting
• Optional host software support utilities
I/O point manager
Report generator
Configuration downloader
Real time interface software
Source code available in C
• Supports a wide variety of GE’s General Purpose I/O Boards
• Available CRT-based control panel
• Low cost expansion
Functional Characteristics
Subsystem Description:
GE provides a complete product line of I/O interface equipment designed specifically for the simulation and training industry. This equipment utilizes state of the art building blocks organized around the VMEbus architecture, providing a high density, high throughput, low cost solution to the I/O control problem. The real time interface equipment includes an Intelligent I/O Controller (IIOC) that is designed to operate in parallel with customer-furnished/programmed SBCs and other customer-furnished hardware.
GE’s I/O board-level product line, trademarked BITMODULES*, is comprised of digital input/output boards, analog input/output boards and synchro/resolver input/output boards. Some of GE’s products are designed with extensive Built-in-Test capability and a front panel Fail LED to enable quick fault detection and isolation. These products support both offline and real time fault detection and isolation.
GE’s real time interface equipment supports configuration data, generated by a customer-furnished host computer, that allows user-definable scan lists, data conversion formats and service order of each I/O type. The system is expandable through the use of building block board-level products. As requirements change, the I/O system can be easily reconfigured. This configuration concept allows independent mapping of I/O points to memory, thus enabling the hardware configuration to change without changing the software interfaces.
Reflective Memory Communications Protocol:
The VMIVME-9081 IIOC communications protocol utilizes a simple, memory-mapped control window and interrupt scheme to simplify control by the RFM host computer. The host initializes a memory-mapped RFM allocation page and interrupts each VMIVME-9081 IIOC on the RFM link. Each IIOC uses its node number, read from the local RFM board, as an index into the RFM allocation page to locate its control window and buffer space. The host may then write commands for the IIOC to the appropriate control window and issue a command interrupt. The IIOC fields the locally generated interrupt, interprets the command and executes the requested action. After I/O configuration, the IIOC posts the locations and word counts of the configured I/O buffers in the control window. The host and IIOC then read and write I/O data to these shared RFM buffers.
VMIVME-9081 — IIOC Firmware:
• Diagnostic firmware
Processor
Local memory
Global memory
Local diagnostic control
Error reporting
Offline and real time fault detection and isolation
• Diagnostic control
Power up initialization
Host initiated (from customer-furnished host computer)
Local terminal control
• Failure reporting
Local terminal option
Host report
• Real time firmware
Floating-point to fixed-point conversion
Fixed-point to floating-point conversion
Bit-to-byte conversion
Byte-to-bit conversion
I/O data transfers
Real time fault detection
Synchro output step limiting
Analog output step limiting
Analog input smoothing
VMIVME-9081/S — Includes:
1. VMIVME-9081 SBC, GE’s firmware
2. Micro DB9 to Standard DB9 Adapter Cable
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