isEqualTo

Short summary

This assertion method checks if all bytes of memory of data and dataToCompare are equal

Attention: Binary comparison means it compares values byte by byte, regardless of type information (signs, REAL etc...) and it compares padding bytes, too.

Attention: STRING and WSTRING is null terminated that means TwinCAT sets null byte/word at the end of the string and touches nothing else For example foo :STRING(3) := 'foo'; looks binary 16#66 16#6F 16#6F 16#00. if you set foo to an empty string foo := '' it looks like 16#00 16#6F 16#6F 16#00.

Parameters

Name	Type	Comment	Kind
data	ANY	current binary data	input
dataToCompare	ANY	binary data with the expected values	input
message	AssertMessage	message if the assertion is false	input

Code

Declaration

METHOD isEqualTo
VAR_INPUT
	(* current binary data *)
	data			:ANY;
	(* binary data with the expected values *)
	dataToCompare	:ANY;
	(* message if the assertion is false *)
	message			:AssertMessage;
END_VAR