EtherCAT:EC SDO WRITE

This function allows writing INTEGER values of sizes 8, 16 and 32 bits.
In order to communicate with a specific slave we use its address and the functions EC_SDO_READ, EC_SDO_WRITE. EC_SDO_WRITE 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).

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(byval slaveaddress as long, byval index as long, byval subindex as long,byval size_bits as long, byval new_val as long)

Syntax

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

Exceptions

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(1, 0x6040, 0, 16, 128) 'clear faults

See Also

• EC_SDO_READ
• EC_SDO_READ_STRING
• EC_SDO_READ_DOUBLE
• EC_SDO_WRITE_DOUBLE
• EC_PDO_READ
• EC_PDO_WRITE