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• XOR / XOR_S

XOR / XOR_S

XOR_S

Type	Function Available as standard (non-safety-related) and safety-related type (*_S). For the safety-related type, the safety-related data types (SAFE*) are expected at the formal parameters.
Description	Performs a logical XOR operation (exclusive OR) on the operands connected to IN1 and IN2. The output is TRUE if the inputs are not equivalent. Truth table for the XOR function: IN1 IN2 1 OUT FALSE FALSE 1 FALSE FALSE TRUE 1 TRUE TRUE FALSE 1 TRUE TRUE TRUE 1 FALSE
Notes	Further inputs can be added. All parameters can be negated. Note: The negation of formal parameters is not supported in safety-related code (SNOLD). The function provides implicit data type conversion at its input and output parameters according to the rules defined by the IEC 61131 standard.
Parameters	Inputs IN1 Data type: ANY_(SAFE)BIT Description: First input value. IN2 Data type: ANY_(SAFE)BIT Description: Second input value. Output OUT Data type: ANY_(SAFE)BIT Description: Output value.
Additional information	EN/ENO behavior The POU is only executed if TRUE is applied to the EN input. If EN = FALSE, the POU is not executed and ENO = FALSE indicates the inactivity. Further Info See the topic "General information on execution control with EN/ENO" for further details.