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Modbus TCP
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Most used properties are in italics.


alias
    Alias that is used instead of full point path and name in quickSources and quickTargets for example
*enabled*
    True = port is enabled, false = port is disabled and no database points will read from or write to it
busType
    Port type for Actiweb internal workings
byteTimeout(microseconds)
    Timeout for individual bytes in modbus packages
*delayBetweenFrames (microseconds)*
    Delay between modbus frames. Some slave devices need more time between frames.
ipAddress
    what IP-address the server will use to bound itself to. Usually same value is used as the controllers IP-address. If left blank, will default to `127.0.0.1`
mode
    Select if port is being used as master of slave
*responseTimeout (microseconds)*
    Time spent waiting for a response from modbusdevice
    Read frame will give timeout-error if response time exceeds this value
taskSleepTime (milliseconds)
    How long task will wait after full round of requests have been done. 
*tcpPort*
    What tcp port will be used to listen Modbus traffic.

    .. important:: 

        As of now, in ``slave`` mode the default modbusport ``502`` *cannot* be used for security reasons. Only ports above 1024 are permitted. 

writeMode:
    Switch for the logic how writable points will be written to the slave device

    always:
        Points will be written every round 
    changes and cyclic:
        Points will be periodicly written, but also always when the value changes
    changes only:
        Points will be written to the slave only when they change
    read only:
        Writing will be disabled (used mainly for debugging)