CANopen - Model CFE - Front-End Platform for Satellite Test
The CANopen Front-End (CFE) supports multiple functions in a 2U, 19-inch enclosure. A single platform can provide up to two, fully independent, dual redundant busses (Bus 1 A&B and Bus 2 A&B). The CFE is part of the suite of latest generation EGSE products from Celestia Satellite Test & Simulation (C-STS). The platform can be configured to combine the following CANopen functions:
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Master node (includes NMT master functionality)
- Master node (includes NMT master functionality)
- Slave node(s) simulator
- Bus Monitor (active or passive, i.e. with or without ACK)
The CFE operates as the electrical interface towards flight equipment and can be used during all AIT levels (module, unit, instrument and satellite) and provides all electrical interfacing (through opto-couplers), data extraction, protocol handling and status annotation function
The standard 2U/19” enclosure provides a small footprint that can be used in a table top setup or integrated into a 19” rack. The unit is powered from an external double isolated AC/DC adapter (included in delivery).As a CANopen Master (BC) the CANopen Front-End implements a periodic, deterministic CANopen Bus scheduler supporting synchronous and asynchronous data transfers. As a Bus Master, operations are based on a CANopen Object Dictionary that is imported from a Device Configuration File (DCF). Standard Master functions include; NMT Master, SYNC producer, Heartbeat protocol, SDO and PDO management (including project specific SDO Block Up-and Down-load), SCET distribution (as described in ECSS-E-ST-50-15C), Bus A/B switching as well as ABORT code handling and reporting.The CANopen Slave node function of the CANopen Front-End uses a dedicated, dual redundant channel to simulate one (or multiple) slave nodes. The operation of simulated node(s) is based on a Device Configuration File (DCF) that describes the behaviour for each Slave independently. Standard CANopen functions include; NMT operation, SYNC consumer, Heartbeat protocol, PDO management and SDO services.
The heart of the CANopen Front-End is based on a commercial, dual channel CAN interface card equipped with a custom plug-on module that provides opto-decoupled, flight representative (electrically) CAN transceivers. A single platform can support up to two of these stacks providing two, full redundant CAN busse.
The CANopen Front-End is part of the latest product suite from C-STS that provides a wide range of onboard interface front-ends, such as Discretes, Power (LCL), RS-422 (SDI), CAN, MIL-STD-1553, SpaceWire, WizardLink, SpaceFibre and many more.
The fully independent, passive (or active) Bus Monitor (BM) function of the CANopen Front-End can be used to monitor (and archive, including accurate timestamps) CAN messages on both busses (Bus A & Bus B).
Sophisticated user configurable filters can be applied to trigger on (and capture) specific bus conditions. Near real-time data analysis can be performed, while continuous storing all CAN traffic to disk in parallel. Optionally, the BM function can be equipped with a project specific decoder DLL, to support textual decodes and user specific colour schemes (simplifying CANopen data analysis).
Features
- CAN Bus Monitor Features
- Simultaneous real-time and non-intrusive monitoring of multiple CAN channels in a single PC
- Richly featured windows GUI for set-up and extended analysis
- Long-term acquisition and storage of all or selected data
- Time-correlated data acquisition
- Dedicated user-configurable raw and filtered data displays
- Up to 100M events collected per session
- Multiple user-programmable and reusable data collection filters
- Save and reload filters and re-filter data on the fly
- History buffer for the display of recent sessions
- Export and Print functionality
- Local or remote setup and control via LAN (optional)
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