CANopen Manager / Slave Manual - esd electronics, Inc.

canOpenReadPDO()
Name: canOpenReadPDO() - waiting for the reception of data
Synopsis: int canOpenReadPDO
(
HPDO hpdo, /* handle of PDO */
void * buffer /* pointer to the data sink */
)
CANopen-Slave
Description: The application waits for the reception of data for a given PDO. The timeout
values assigned in the PDO definition are valid.
Buffer is a pointer to an application memory area (at least 8 bytes) in which the
received data can be stored. If NULL the callback handler of the mapped
directory entries are called, otherwise this is suppressed.
Return: 0 or an error code described in the appendix.
canOpenRequestPDO()
Name: canOpenRequestPDO() - asynchronous request of data
Synopsis: int canOpenRequestPDO
(
HPDO hpdo, /* handle of PDO */
void * buffer /* pointer to the data sink */
)
Description: By means of this function a client requests the transmission of a server PDO by
means of a RTR frame. The timeout values assigned in the PDO definition are
valid.
Buffer is a pointer to an application-memory range (at least 8 bytes) in which the
received data can be stored. If NULL the callback handlers of the mapped
directory entries are called, otherwise this is suppressed.
Return: 0 or an error code described in the appendix.
CANopen Slave Software Manual • Doc. No.: C.2002.21 / Rev. 2.2 Page 39 of 65