Output Description

DONE (done)

Data type: BOOL

Output DONE indicates the state of the job processing. After completing or aborting the processing (due to an error), DONE is set to TRUE for one cycle. For that reason, the output always has to be considered together with output ERR. If ERR is TRUE, an error occurred. In this case, the error number can be read at output ERNO.

ERR (error)

Data type: BOOL

Output ERR indicates whether an error occurred during block processing. This output always has to be considered together with output DONE. If DONE = TRUE and ERR = TRUE, an error occurred. In this case, the error number can be read at output ERNO.

ERNO (error number)

Data type: WORD

Output ERNO provides an error identifier, if an invalid value was applied to an input or if an error occurred during request processing. ERNO always has to be considered together with the outputs DONE and ERR. The value output at ERNO is only valid, if DONE is TRUE and ERR is TRUE.

The encoding of the error messages output at ERNO is explained in the chapter Error Messages: Error Messages of the Function Block Libraries

BUSY (busy)

Data type: BOOL

Output BUSY indicates whenever there is a communication action performed.

Function Call in ST:

dwAcsModReadNPrm_DATA             := ADR(aiAcsModReadNPrm_VALUE[1]);


aiAcsModReadNPrm_DATA (EN         := xAcsModReadPrm_EN,
                       PRM_NUM    := uiAcsModReadPrm_PRM_NUM,
                       DATA       := dwAcsModReadNPrm_DATA,
                       DRIVE_DATA := tsDriveData);


xAcsModReadNPrm_DONE := AcsModReadNPrm.DONE;
xAcsModReadNPrm_ERR  := AcsModReadNPrm.ERR;
wAcsModReadNPrm_ERNO := AcsModReadNPrm.ERNO;
xAcsModReadNPrm_BUSY := AcsModReadNPrm.BUSY;