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