EtherCAT:EC SDO WRITE DOUBLE

Similar to EC_SDO_WRITE, this subroutine allows writing DOUBLE values.
EC_SDO_WRITE_DOUBLE sends data to the slave over a specific SDO. We have to specify the SDO's index, and its sub-index, its size, and the new value that we would like to write to the slave.
The first sub-index is 0. If only one sub-index exists, we still have to specify 0 (we cannot omit this field).

	IMPORTANT
	At the moment only 32 bits variables can be written

Input

Slave address, SDO index, SDO sub-index, SDO size in bits, the new value to be written.

Output

None

Return Value

Void

Declaration

public sub EC_SDO_WRITE_DOUBLE(byval slaveaddress as long, byval index as long, byval subindex as long, byval varSize as long, byval new_val as double)

Syntax

call EC_SDO_WRITE_DOUBLE(<Slave address>, <SDO index>, <SDO sub-index>, <SDO size in bits>, <new value>)

Exceptions

EC_SDO_READ_WRITE_DOUBLE - "SDO READ/WRITE DOUBLE ERROR: Invalid Size. Must be 32 or 64" 20071 EC_SDO_WRITE_READ_ONLY - "SDO WRITE ERROR: Attempt to write a read-only object" 20061
EC_WRITE_VAL_LOW - "SDO WRITE ERROR: Written value too low" 20062
EC_WRITE_VAL_HIGH - "SDO WRITE ERROR: Written value too high" 20063
EC_SDO_GENERAL_ERROR - "SDO WRITE ERROR: Check written value validity" 20065
EC_SDO_WRITE_INVALID_SIZE - "SDO WRITE ERROR: Invalid Bit Size" 20066

Examples

call EC_SDO_WRITE_DOUBLE(ax.Dadd, 0x2027, 0, 32, 96) ' Write CDHD kvp

See Also

• EC_SDO_READ_DOUBLE
• EC_SDO_READ
• EC_SDO_WRITE
• EC_SDO_READ_STRING
• EC_PDO_READ
• EC_PDO_WRITE