--- a/include/ecrt.h	Thu Apr 09 10:18:27 2009 +0000
+++ b/include/ecrt.h	Thu Apr 09 10:21:47 2009 +0000
@@ -44,7 +44,7 @@
  * - Added the distributed clocks feature and the respective methods
  *   ecrt_slave_config_dc_assign_activate() and
  *   ecrt_slave_config_dc_sync_cycle_times() to configure a slave for cyclic
- *   operation.
+ *   operation, and ecrt_master_sync() for drift compensation.
  * - Changed the meaning of the negative return values of
  *   ecrt_slave_config_reg_pdo_entry() and ecrt_slave_config_sdo*().
  * - Imlemented the Vendor-specific over EtherCAT mailbox protocol. See
@@ -504,6 +504,12 @@
         ec_master_state_t *state /**< Structure to store the information. */
         );
 
+/** Queues the DC drift compensation datagram for sending.
+ */
+void ecrt_master_sync(
+        ec_master_t *master /**< EtherCAT master. */
+        );
+
 /******************************************************************************
  * Slave configuration methods
  *****************************************************************************/