FB_WritePersistentData
The function block FB_WritePersistentData is an extended version of the WritePersistentData function block. The system behavior for writing the persistent data (data consistency/task cycle time overrun) can be influenced via the MODE parameter.
Inputs
VAR_INPUT
NETID : T_AmsNetId;
PORT : UINT;
START : BOOL;
TMOUT : TIME := DEFAULT_ADS_TIMEOUT;
MODE : E_PersistentMode;
END_VARName | Type | Description |
|---|---|---|
NETID | T_AmsNetID | The network address of the TwinCAT computer whose persistent data are to be saved can be specified here. An empty string can be entered for the local computer. |
PORT | UINT | The PORT parameter specifies the runtime system whose persistent data is to be stored. |
START | BOOL | The function block is enabled by a positive edge at this input. |
TMOUT | TIME | Time-out period that may not be exceeded when executing the ADS command. |
Mode | Mode in which the persistent data are to be written. |
Outputs
VAR_OUTPUT
BUSY : BOOL;
ERR : BOOL;
ERRID : UDINT;
END_VARName | Type | Description |
|---|---|---|
BUSY | BOOL | When the function block is enabled, this output is set and remains set until a feedback is received. |
ERR | BOOL | If an error should occur during the transfer of the command, then this output is set once the BUSY output was reset. |
ERRID | Returns the error code, if the ERR output is set. |
Example:
See: Writing of persistent data: system behavior.
See: Example in the documentation for the WritePersistentData function block.
Requirements
|
Development environment |
Target platform |
PLC libraries to be integrated (category group) |
|---|---|---|
|
TwinCAT v3.1.0 |
PC or CX (x86, x64, ARM) |
Tc2_Utilities (System) |