diff -r 3bdd7a747fae -r fa52128477f6 include/ecrt.h
--- a/include/ecrt.h	Thu Sep 20 15:28:25 2012 +0200
+++ b/include/ecrt.h	Thu Oct 04 10:07:52 2012 +0200
@@ -46,6 +46,8 @@
  *   the state of a redundant link.
  * - Added the EC_HAVE_REDUNDANCY define, to check, if the interface contains
  *   redundancy features.
+ * - Added ecrt_sdo_request_index() to change SDO index and subindex after
+ *   handler creation.
  *
  * Changes in version 1.5:
  *
@@ -1447,6 +1449,18 @@
  * SDO request methods.
  ****************************************************************************/
 
+/** Set the SDO index and subindex.
+ *
+ * \attention If the SDO index and/or subindex is changed while
+ * ecrt_sdo_request_state() returns EC_SDO_REQUEST_BUSY, this may lead to
+ * unexpected results.
+ */
+void ecrt_sdo_request_index(
+        ec_sdo_request_t *req, /**< SDO request. */
+        uint16_t index, /**< SDO index. */
+        uint8_t subindex /**< SDO subindex. */
+        );
+
 /** Set the timeout for an SDO request.
  *
  * If the request cannot be processed in the specified time, if will be marked