Difference between revisions of "EtherCAT:EC PDO READ N"
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Revision as of 14:32, 13 January 2015
Reads via PDO an object of N bytes in size. This function is designed for objects larger than 32 bits.
Input
Slave address, PDO index, PDO sub-index
Output
An array of longs
Return Value
0 on success, -1 on failure.
Declaration
public function EC_PDO_READ_N(byval slaveaddres as long, byval index as long, byval subindex as long, retVal_array[*] as long) as long
Syntax
retVal = EC_PDO_READ_N(<Slave address>, <PDO index>, <PDO sub-index>, <array of longs>)
Exceptions
EC_SLAVE_ADDRESS_ERROR - "SLAVE ADDRESS ERROR" 20032
EC_PDO_PARMS_ERROR - "INVAILD PDO PARAMETERS" 20040
EC_PDO_DIRECTION_ERROR - "PDO WRONG DIRECTION (INPUT/OUTPUT)" 20046
Examples
retVal = EC_PDO_READ_N(2, 0x6041, 1, retVal_array) ' Read analong inputs into retVal_array