FindFirstValueByKey (FB)¶

FUNCTION_BLOCK FindFirstValueByKey EXTENDS CBM.ETrig

Finds the corresponding value of a key.

InOut:

Scope	Name	Type	Comment	Inherited from
Input	xExecute	BOOL	Rising edge: Action starts Falling edge: Resets outputs If a falling edge occurs before the function block has completed its action, the outputs operate in the usual manner and are only reset if either the action is completed or in the event of an error. In this case, the corresponding output values (xDone, xError) are present at the outputs for exactly one cycle.	ETrig
Output	xDone	BOOL	TRUE: Action successfully completed	ETrig
	xBusy	BOOL	TRUE: Function block active	ETrig
	xError	BOOL	TRUE: Error occurred, function block aborts action FALSE: No error	ETrig
Input	wsKey	WSTRING	The key to search
	diStartIndex	DINT	Start index
Inout	jsonData	JSONData	JSONData object
Output	jsonElement	JSONElement	The corresponding value of the key
	eError	ERROR