GetSizeJsonStringFromSymbol
This method reads the size of the JSON representation of a symbol. The value is specified with null termination.
Syntax
METHOD GetSizeJsonStringFromSymbol : UDINT
VAR_INPUT
nData :UDINT;
pData :PVOID;
END_VAR
VAR_IN_OUT CONSTANT
sDatatype : STRING;
END_VAR
VAR_OUTPUT
hrErrorCode : HRESULT;
END_VAR
Return value
Name | Type |
|---|---|
GetSizeJsonStringFromSymbol | UDINT |
Inputs
Name | Type |
|---|---|
nData | UDINT |
pData | PVOID |
/ Inputs/Outputs
Name | Type |
|---|---|
sDatatype | STRING |
Outputs
Name | Type |
|---|---|
hrErrorCode | HRESULT |
Sample call:
nLen := fbJsonDataType.GetSizeJsonStringFromSymbol('BOOL',SIZEOF(bBool),ADR(bBool));