CY233 Command Summary

All CY233 commands are listed below. While many are self explanatory, the interpretation of some of them is dependent upon the network topology and operating mode. A complete description is beyond the scope of this data sheet, however a detailed user manual (~150 pages) is available from Cybernetic Micro Systems.

Network Serial Commands

    @     Test Network Link, @aa[cr]
  A..F    Undefined, Hex Character Conflict
    G     Reserved command letter
    H     Undefined
    I     Initialize CY233, Iaa[cr]
    J     Enable Echo All mode, Jaa[cr]
    K     Enable parallel Error status, Kaa[cr]
    L     Undefined
    M     Fill consecutive locations, Maahh...hh[cr]
    N     Display consecutive locations, Naacchh...hh[cr]
    O     Reserved command letter
    P     Set periodic Master mode delay, Paatttt[cr]
    Q     Query for serial status, Qaass[cr]
    R     Read from parallel device, Raad...d[cr]
    S     Sense local address, Saabb...11[cr]
    T     Set handshake Timeout delay, Taatttt[cr]
    U     Token message, Uaa[cr]
    V     Undefined
    W     Write to parallel device, Waad...d[cr]
    X     transfer to parallel device, Xaad...d[cr]
    Y..   User reserved, ASCII 59h...5Fh

LAN Serial Commands

    @     Return LAN Node Address, @aa[cr]
    G     Reserved command letter
    I     Initialize CY233, Iaa[cr]
    O     Reserved command letter
    P     Pass Parallel Command to Network 
          CY233, PCmd[cr]
    Q     Query for serial error status,
          Qaass[cr]
    R     Generate Read Message to Network,
          Raad...d[cr]
    T     Set LAN handshake Timeout delay,
          Taatttt[cr]    
    W     Generate Write Message to Network,
          Waad...d[cr]

Commands not listed above should not be used in a Local Area Network.

Parallel Commands

    G     Reserved command letter
    I     Initialize CY233, I[cr]
    J     Enable Echo All mode, J[cr]
    K     Enable parallel Error status, K[cr]
    L     Load value of Status byte 2, Lw[cr]
    O     Reserved command letter
    P     Set Periodic Master mode delay, Ptttt[cr]
    S     Sense nodes on Ring, S[cr]
    T     Set handshake Timeout delay, Ttttt[cr]
    U     Generate Token message, Uaa[cr]

Only commands listed above are available as Parallel commands. Any others will set the parallel status error bit.