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MIL/STD-1553B Bus Overview. J. Frederick Bartlett Fermilab June 3, 1999. MIL/STD 1553 Field Bus Support. The MIL/STD-1553B standard 1 MHz clock Manchester II bi-phase code Transformer coupling Bus lengths 100 meters+ 16-bit word size 20 μ sec/word Status word for each transaction

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mil std 1553b bus overview

MIL/STD-1553B BusOverview

J. Frederick Bartlett

Fermilab

June 3, 1999

mil std 1553 field bus support
MIL/STD 1553 Field Bus Support
  • The MIL/STD-1553B standard
    • 1 MHz clock
    • Manchester II bi-phase code
    • Transformer coupling
    • Bus lengths 100 meters+
    • 16-bit word size
    • 20 μ sec/word
    • Status word for each transaction
    • High noise rejection
    • Very Robust
mil std 1553 field bus properties
MIL/STD 1553 Field Bus Properties
  • Addressing structure
    • Remote terminal (RT) - 31
    • Broadcast (all RT’s)
    • Subaddress - 30
    • Word count - 1 to 32
    • Mode function
vxworks epics 1553 support
VxWorks/EPICS 1553 Support
  • VxWorks Driver
    • Uses a POSIX queue for serialization
    • Multiple transactions per queue element (atomic)
    • User callback function
    • Long data blocks sequenced as multiple transactions by the driver
  • EPICS driver wrapper
vxworks epics 1553 support1
VxWorks/EPICS 1553 Support
  • Generic record (mil1553)
    • No device module
  • Generic device (planned)
    • AI, AO, BI, BO, LONGIN, LONGOUT, MBBI, MBBO, WF
  • Rack monitor
    • Complex record example
    • 1U rack profile
    • 64 A/D channels
      • Read with two 1553 transactions
    • 8 D/A channels
    • 4 binary channels
      • Input/output selection
      • 32 word per channel
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