Input Description

EN (enable)

Data_Type	Default_Value	Range	Unit
BOOL	-	-	-

In order to enable the function block processing, input EN has to be continuously set to TRUE. The function block is not processed if input EN = FALSE. While input is set to TRUE, the inputs are continuously checked for validity and plausibility. If this is not the case, processing is aborted and an error is displayed.

SLOT

Data_Type	Default_Value	Range	Unit
BYTE	0	-	-

The input parameter SLOT chooses the ETHERCAT Communication Module to be queried. The slots are numbered from right to left. Slot number 1 is the one beside the CPU.

NODE

Data_Type	Default_Value	Range	Unit
WORD	0	-	-

NODE represents the ETHERCAT address of the slave.

IDX (index)

Data_Type	Default_Value	Range	Unit
WORD	0	0-65535 (depending on the ETHERCAT slave)	-

Index of the object which should be read/written.

SUBIDX (subindex)

Data_Type	Default_Value	Range	Unit
BYTE	0	0-255 (depending on the ETHERCAT slave)	-

Subindex of the object, which should be read/written.

LEN (length)

Data_Type	Default_Value	Range	Unit
WORD	0	1…65535	byte

LEN tells the function block how large the buffer in SLV_STATE is. For each slave 4 bytes are needed.

LEN (length)

Data_Type	Default_Value	Range	Unit
WORD	0	depending on the ETHERCAT slave	-

LEN represents the length of the data buffer.

DATA (object \ data)

Data_Type	Default_Value	Range	Unit
POINTER_TO_ARRAY_OF_BYTE	0	-	-

Address of the data buffer where the value of the object (Index:Subindex) should be read. The needed buffer depends on the queried object.

TOUT (timeout)

Data_Type	Default_Value	Range	Unit
UINT	0	0-65535	ms

Timeout constraint for the function block. If this is exceeded, the function block returns with ERR set to TRUE.