CM592ReadOutput (FB)

FUNCTION_BLOCK PUBLIC CM592ReadOutput EXTENDS AC500_StateMachine.AbbETrig

Read output data of a slave even if this slave is not configured by this master.

If not clear with how much output data referenced slave device will reply, define buffer with maximum size of PROFIBUS output data instead (244) and use this size as DataLen.

InOut:

Scope	Name	Type	Initial	Comment	Inherited from
Input	Execute	BOOL	FALSE	A rising edge starts the operation, the output Busy goes to TRUE. In the first cycle all other inputs are read and stored, afterwards they are ignored. A falling edge does not stop the operation. After Done = TRUE or Error = TRUE and Execute = FALSE all outputs will be reset.	AbbETrig
Output	Done	BOOL	FALSE	Operation is completed without error (while outputs Busy and Error are FALSE). This output is TRUE for at least one cycle or until Execute is set to FALSE	AbbETrig
	Busy	BOOL	FALSE	Operation is running (while outputs Done and Error are FALSE)	AbbETrig
	Error	BOOL	FALSE	Operation is stopped with error (while outputs Busy and Done are FALSE). This output is TRUE for at least one cycle or until Execute is set to FALSE. The output ErrorID gives more details about the error.	AbbETrig
Input	Device	AC500_IoDrvCm592Profibus.IDeviceCM592Profibus	0	Reference to coupler device instance
	SlaveAddr	USINT	0	Address of PROFIBUS slave device (0 - 126)
	DataLen	USINT	0	Length of data to be read as maximum in number of bytes - has to correspond to reply of slave device and size of buffer used as Data
	Data	POINTER TO BYTE	0	Address of buffer where to put received data into
Output	ErrorID	ERROR_ID	ERROR_ID.NO_ERROR	Error code description
	AddErrorID	UDINT	CM592Const.CM592_ADD_ERROR_NONE	Additional error info, in case ErrorID shows “REQUEST_FAILED”
	DataLenRead	USINT	0	Length of data read