TC_SysLatency

VAR_INPUT

VAR_INPUT
    NETID  : T_AmsNetId;
    START  : BOOL;
    TMOUT  : TIME := DEFAULT_ADS_TIMEOUT;
END_VAR

NETID: This parameter can be used to specify the AmsNetID of the TwinCAT computer whose latency time is to be determined (type: T_AmsNetID). If it is to be run on the local computer, an empty string can be entered.

START: the block is activated by a positive edge at this input.

TMOUT: States the length of the timeout that may not be exceeded by execution of the ADS command.

VAR_OUTPUT

VAR_OUTPUT
    BUSY    : BOOL;
    ERR     : BOOL;
    ERRID   : UDINT;
    ACTUAL  : UDINT;
    MAXIMUM : UDINT;
END_VAR

BUSY: When the function block is activated this output is set. It remains set until a feedback is received.

ERR: If an error should occur during the transfer of the command, then this output is set once the BUSY output was reset.

ERRID: Supplies the ADS error number when the ERR output is set.

ACTUAL: The current latency time of a TwinCAT system in µs.

MAXIMUM: The maximum latency time of a TwinCAT system in µs (maximum latency time since the TwinCAT system was last started).

Requirements