Output Description

DONE

Data_Type	Default_Value	Range	Unit
BOOL	-	TRUE / FALSE	-

Output DONE indicates the state of execution.

It has the value TRUE when the execution is finished and the outputs are valid. When DONE becomes FALSE other outputs are not valid any more.

ERR

Data_Type	Default_Value	Range	Unit
BOOL	-	TRUE / FALSE	-

Output ERR indicates whether an error occurred during Function Block execution.

It is only valid when DONE is TRUE. The kind of occurred error is specified by the error identifier at output ERNO.

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

LEV_BY

Data_Type	Default_Value	Range	Unit
WORD	-	-	-

Output LEV_BY displays the filling level of the receive buffer in bytes. The displayed value is updated as long as EN is TRUE and applies to the input values read with the rising edge at input EN.

One data package occupies output LEN + 6 bytes in the receive buffer (4 bytes for the NODE ID of the sending device, 2 bytes for the specification of the length).

LEV_DS

Data_Type	Default_Value	Range	Unit
WORD	-	-	-

Output LEV_DS displays the filling level of the receive buffer in data records. The displayed value is updated as long as EN is TRUE and applies to the input values read with the rising edge at input EN.