Output Description

DONE   BOOL \    (done)

Output DONE indicates that the new start is being performed. This output has always to be considered together with the output ERR. If ERR = TRUE, an error has occurred. In this case, the error number is indicated at the output ERNO.

ERR   BOOL \    (error)

Output ERR indicates whether an error occurred during the read operation. This output always has to be considered together with output DONE. If an error has occurred, the following applies: DONE = TRUE and ERR = TRUE. Output ERNO signalizes the error number.

ERNO

Data_Type	Default_Value	Range	Unit
WORD	-	0 … 65535	-

At output ERNO the identifier of an occurred error is provided. It is only valid when DONE and ERR is TRUE. (see, error messages): Error Messages of the Function Block Libraries