FB_WritePersistentData

FB_WritePersistentData 1:

The function block FB_WritePersistentData is an extended version of  WritePersistentData function block.  The input parameter MODE affects the system behaviour of how the persistent data is written. For additional info see: Writing of persistent data: System behaviour.

 VAR_INPUT

VAR_INPUT
    NETID       : T_AmsNetId;
    PORT        : UINT;
    START       : BOOL;
    TMOUT       : TIME := DEFAULT_ADS_TIMEOUT;
    MODE        : E_PersistentMode;
END_VAR

NETID : It is possible here to provide the AmsNetId of the TwinCAT computer on which the ADS command is to be executed. If it is to be run on the local computer, an empty string can be entered.

PORT : Contains the ADS port number of the PLC run-time system whose persistent data is to be stored. The first PLC run-time system, for example, has port number 801, and the second has port number 811.

START : The function 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.

MODE : Persistent data write mode. For additional info see: Writing of persistent data: System behavior.

VAR_OUTPUT

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

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

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

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

 

Requirements

Development environment

Target system type

PLC libraries to include

TwinCAT v2.9.0 Build >= 959

PC or CX (x86)

TcUtilities.Lib

(Standard.Lib; TcBase.Lib; TcSystem.Lib are included automatically)

TwinCAT v2.10.0 Build >= 1301

CX (ARM)