Xpressnet™ - Command Extensions for Clock

Messages from the Client

    Commandlist for Clock Xpressnet Message (Extension)
     OP-CodeVer.Operation
    0x2* 0xFC [XOR]   Stop Clock Message; the answer would be a full clock message from the command station
    0x2* 0xFD [XOR]   Resume Clock Message; the command station continues the clock operation with the previous time and acceleration factor. The answer is a full clock message from the command station
    0x2* 0xFE [XOR]   Query Clock Message
    0x2* 0xFF MIN HOUR WDAY ACC [XOR]   Set Clock Message, MIN and HOUR decribes the time, WDAY the day inside the week, ACC acceleration, coding see below.

Messages from the Command Station

    Commandlist for Clock Xpressnet Message (Extension)
     OP-CodeVer.Operation
    0x2* 0xFF MIN HOUR WDAY ACC [XOR]   Clock Message, MIN and HOUR denotes the time, WDAY the day inside the week, ACC acceleration.

Coding of Minutes, Hours, Weekday and Acceleration

    Clock Coding
    ByteOP-Code (bin)RangeOperation
    MIN 00mmmmmm mmmmmm = minute, range 0...59
    HOUR 100HHHHH HHHHH = hour, range 0...23
    WDAY 01000www www = day of week, 0=monday, 1=tuesday, 2=wednesday, 3=thursday, 4=friday, 5=saturday, 6=sunday.
    ACC 110fffff fffff = acceleration, range 0...31; fffff = 0 denotes clock is stopped, a resume after a stop shall start with a transmission of the acceleration factor. A change of acceleration is only allowed during a resume.