FB_WritePersistentData
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) |