Lenze ETC Motion Control - Manual (Page 399)

PLC programming
Library
CANopen functions
8
8.8
8.8.5
l
399 EDSTCXN EN 2.0
Type is a lower−case letter describing the size of the data type as follows:
Type Codesys data type Size
B BYTE 8 Bit
W BOOL, WORD, INT 16 Bit
D DWORD, DINT, REAL 32 Bit
The return value is TRUE if the function has been executed successfully.
Otherwise the function could not be executed, e.g. due to lack of memory.
)
Note!
The database should only be as large as required by the data
actually used.
The PLC should always only update the data in the global database which are
actually being displayed to prevent an unnecessary increase of the bus load
on the CAN Bus. Cyclical changes during each PLC cycle should generally be
avoided.
TYPE DATABASE_TR :
STRUCT
dummy_dw : DWORD;
pad1_dw : DWORD;
pad2_b : BYTE;
pad3_b : BYTE;
pad4_w : WORD;
END_STRUCT
END_TYPE
data_st : DATABASE_TR;
COPDEFINEDS403( 127, ADR(data_st), SIZEOF(data_st), ’2d2b1w’, 16#6700, 16#8100 );
The function defines a global database with the elements defined by the
descriptor string for a CANopen control element with the node number 127,
which has been inserted accordingly into the control configuration of
CoDeSys.
Example