The CCC IOC-555-D is a highly specialized and robust Input/Output Controller (IOC) module, a critical component within the CCC (Concurrent Computer Corporation) real-time computer system family, specifically designed for demanding industrial and military simulation, data acquisition, and control applications. This module serves as a versatile and high-performance interface between the CCC computer’s high-speed parallel bus and the external world of analog and digital signals. Its primary function is to provide a dense, reliable, and deterministic means of reading sensor data (inputs) and outputting control signals (outputs) with precise timing, which is essential for closed-loop control systems, test stands, and simulation environments. The CCC IOC-555-D embodies the ruggedized, high-reliability design philosophy required for integration into systems where fault tolerance and real-time performance are non-negotiable.
As a quintessential legacy system component, the CCC IOC-555-D finds its value in sustaining and modernizing long-lifecycle capital equipment. It acts as the «nerve center» for signal conversion and conditioning, typically housing multiple channels of analog-to-digital (ADC) and digital-to-analog (DAC) converters, along with digital I/O lines and timing/counter circuitry. In systems such as aircraft simulators, engine test cells, or industrial process control rigs, the CCC IOC-555-D is responsible for translating real-world parameters like pressures, temperatures, and voltages into digital values for the host computer, and conversely, converting computed control actions into analog voltages or discrete signals to drive actuators, valves, or indicators. Its design prioritizes deterministic response times, noise immunity, and compatibility with the proprietary CCC bus architecture, making it an indispensable component for maintaining operational legacy systems that continue to perform critical functions.
Technical Specifications
Parameter Name
Parameter Value
Product Model
CCC IOC-555-D
Manufacturer
Concurrent (Concurrent Computer Corporation, now part of Presagis or legacy support entities)
Product Type
Input/Output Controller (IOC) Module for CCC Real-Time Systems
Host Bus Interface
Proprietary CCC parallel bus (e.g., related to the MAXION or PowerHawk platform buses)
Form Factor
Custom 6U or Multibus form factor card for CCC chassis
Analog Input Channels
Typically 16 or 32 single-ended/differential channels, 12-bit or 16-bit resolution
Analog Output Channels
Typically 2, 4, or 8 channels, 12-bit resolution
Digital I/O Channels
Multiple TTL-compatible input and output lines (e.g., 16-32 lines each)
Counter/Timers
Dedicated 16-bit or 32-bit counter/timer channels for frequency measurement or pulse generation
Sample Rate / Throughput
High, deterministic rate (e.g., 100+ kHz aggregate) governed by host bus and onboard DSP/processor
Input Voltage Ranges
Software-selectable (e.g., ±5V, ±10V, 0-10V)
Output Voltage Ranges
Typically ±5V, ±10V, or 0-10V
Isolation
Channel-to-channel and/or channel-to-bus isolation (dependent on specific variant)
Operating Temperature
0°C to +55°C (commercial) or extended range for ruggedized versions
Key Features and Advantages
The CCC IOC-555-D is defined by its deterministic performance and tight integration with the CCC real-time operating system (RTOS). Unlike standard PC-based data acquisition cards, its driver and hardware are optimized for minimal and predictable latency, ensuring that I/O operations occur within a guaranteed time window. This is critical for hard real-time applications like flight simulation, where control loop stability depends on precise timing. The module often features a dedicated onboard processor or DSP to manage data flow and preprocessing, offloading the host CPU and further enhancing system performance.
IOC-555-D
High channel density and signal integrity are core to its design. By consolidating a significant number of analog and digital I/O channels onto a single board, the CCC IOC-555-D maximizes the I/O capability within the limited slot space of a CCC chassis. The analog circuitry is designed with high-quality components to provide good noise rejection and accuracy, essential for measuring low-level sensor signals in electrically noisy industrial environments. Features like programmable gain amplifiers (PGAs) on analog inputs and built-in anti-aliasing filters contribute to clean, reliable data acquisition.
Ruggedized construction and long-term reliability are hallmarks of this legacy product line. Built to withstand the vibrations and environmental stresses of industrial and mobile (e.g., naval) platforms, the CCC IOC-555-D is engineered for continuous, 24/7 operation. Its value is profoundly linked to system longevity and support. For organizations operating expensive, mission-critical simulation or control systems built around CCC architecture, the CCC IOC-555-D represents a maintainable component. Its availability, even through specialist legacy suppliers, allows for system repairs and lifecycle extension, protecting the substantial investment in the overall system long after the original manufacturer’s direct support has evolved.
Application Areas
The CCC IOC-555-D is predominantly deployed in high-end, real-time simulation and data acquisition systems where determinism and reliability are paramount. Its most classic application is in full-flight simulators (FFS) and flight training devices (FTDs). In these systems, it interfaces with the simulator’s cockpit controls (yokes, pedals, switches), engine instruments, and flight surface actuators, reading pilot inputs and outputting instrument readings and force feedback with imperceptible latency to create a realistic training experience.
In industrial test and measurement, the module is used in engine test cells (for automotive, aerospace, or marine engines) to acquire data from hundreds of sensors (temperature, pressure, vibration) and control fuel valves, ignition systems, and dynamometers. Its deterministic nature ensures synchronized data collection and control. Within defense and aerospace, it can be found in hardware-in-the-loop (HIL) test rigs for missile guidance systems, radar simulators, or vehicle control systems, where it provides the real-world I/O interface for testing electronic control units (ECUs) under simulated dynamic conditions.
For process control and supervisory systems in legacy industrial plants (e.g., chemical, power generation), the CCC IOC-555-D may serve as the I/O front-end for a dedicated CCC-based supervisory computer, handling critical monitoring and control loops where standard PLCs were not historically used. It is essentially the bridge for any real-time CCC computer system that needs to interact with the physical world through analog and digital signals.
Related Products
CCC CPU Boards (e.g., series 5000 or 8000 processors): The host single-board computers that reside in the same chassis and execute the real-time application software, communicating with the IOC-555-D over the backplane.
CCC Chassis & Backplane: The enclosure and proprietary parallel bus (e.g., MASSBUS, I/O expansion bus) that houses the IOC-555-D and other system cards.
CCC Real-Time Operating System (RTOS): The proprietary OS (e.g., OS/32, Real-time UNIX variant) and associated I/O driver software required to operate the IOC-555-D.
CCC IOC-550 / IOC-565: Other models within the same I/O controller family, possibly with different channel counts, resolutions (e.g., 12-bit vs. 16-bit), or specialized functions (e.g., synchro/resolver interface).
Signal Conditioning Modules: External rack-mounted or terminal block units that provide isolation, amplification, or filtering for field signals before they connect to the IOC-555-D.
Legacy System Integrators / Support Providers: Third-party companies specializing in the repair, refurbishment, and support of legacy CCC systems and components like the IOC-555-D.
Modern Equivalent (e.g., National Instruments PXI, VME-based I/O): Contemporary modular platforms that offer similar functionality but with modern buses (PCIe, PCI) and software (LabVIEW), used for new system designs.
Concurrent (now Presagis) Simulation Software: The application-level software (e.g., SIMulation Workbench) that runs on the CCC host and utilizes the data from the IOC-555-D.
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