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Dos-Drive CAN  
  PC Card Storage Device for CAN-Bus

 
  • Features 2 separate interfaces
    - High-speed CAN-Bus
    - Asynchronous serial interface
  • Supports all common used ATA PC Cards
  • DOS FAT File system for easy data exchange with notebooks and desktops
  • Extended temperature range (-40�C...85�C)
  • Optional DOS-Drive CAN SDK
 
  DESCRIPTION:
With DOS-Drive CAN a completely new read/write device is available, which reduces development time and makes ATA Flash Cards available for a wide variety of systems.
  • Automotive
  • Precision farming, Construction equipment
  • Automation

DOS-Drive CAN organizes files and folders in DOS format. Therefore it is easy to maintain machine data and prescriptions under Windows operating systems.

ROBUST STORAGE MEDIA:

For data storage, ATA Flash Cards from SanDisk are used, which are well known for their reliability and robustness. At present, capacities between 8 MB and 2 GB are available.

FLEXIBLE HOST INTERFACE:
DOS-Drive CAN offers two separate interfaces which can be used alternatively:
  • High-Speed CAN-Bus
  • RS232-Interface

Configuration of the device is done with a PC program via the RS232-interface

CAN-BUS CONNECTION:
DOS-Drive CAN supports CAN 2.0B (active). By default, High-Speed CAN-Bus (ISO 11898) is used. Two identifiers are required for communication. The following CAN-Bus Parameters can be configured via the serial interface :
  • Bit rate (up to 1MBit/sec)
  • Standard (11 Bit) or Extended (29 Bit) CAN
  • Identifiers for communication

These parameters can be adjusted to the requirements of specific target systems by a utility program from the DOS-Drive CAN SDK (software development kit). The parameters remain in non-volatile memory until their next change.

RS232-CONNECTION:
Alternatively, the DOS-Drive CAN can be connected to the host system via the serial interface. The serial connection uses no separate control lines. The DOS-Drive CAN automatically detects the baud rate being used by the host system. Transmission rates up to 115.200 Baud are supported.

FULLY DEVELOPED COMMUNICATION PROTOCOL:
For communication between host system and DOS-Drive CAN, a simple and secure protocol is used, which is implemented for CAN- and RS232 interface. The protocol allows for comfortable access to functions of the DOS FAT file system. Therefore, DOS-Drive CAN is highly independent from the architecture of the host system and requires only a minimum of resources.

Special measurements have been taken to ensure a high level of data integrity even with intermittent disconnections in power supply. In such a case the device will be able to complete an interrupted transaction on the next power-up. All files that have been left open will be closed.

DOS-FILE FUNCTIONS:
DOS-Drive CAN supports a wide variety of DOS file functions:
  • File system fully compatible to MS-DOS 6.x
    Supports 12/16-bit FAT
    8.3 - file name convention
    Allows up to 16 simultaneously opened files
  • Extensive set of file functions
    Create, Open, Close,
    Read, Write, Seek,
    Rename, Delete,
    Read/Write file attributes and time.
  • Supports subdirectories
    Change, Create, Delete, Display
  • Formatting PC Cards
    in MS-DOS compatible format


SPECIAL FUNCTIONS:
DOS-Drive CAN offers the following special functions, which are accessible with protocol functions:
  • Request status information
    PC Card inserted/changed,
    Information about PC Card (Type, Size, Format)
  • Sector Level Access
    Format independent access to all sectors of the media (read and write)


SUPPORT FOR DESIGN-IN
Usually, the DOS-Drive CAN will be integrated as an OEM component in specific target systems. Therefore, the standard shipping contents is reduced to the essential.

Integration into a target system is a one-time process. Therefore, the documentation and application samples are offered as a separate product DOS-Drive CAN SDK (Software Development Kit), which has to be purchased only once:
  • Complete device description
  • Extensive documentation of the communications protocol

Additionally some tools are provided for the integration of the serial communication:
  • PC based terminal program
  • Shell with test functions similar to the DOS COMMAND.COM:
    FORMAT, DIR, COPY, TYPE, DEL, REN
    CD, MD, RD and others

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