diff -r 0c484ee12d89 -r 171ddba165d2 include/ecrt.h
--- a/include/ecrt.h	Fri Aug 21 12:15:16 2009 +0200
+++ b/include/ecrt.h	Mon Aug 24 12:01:22 2009 +0200
@@ -819,13 +819,17 @@
         );
 
 /** Configure a slave's watchdog times.
-*/	 
+ */
 void ecrt_slave_config_watchdog(
         ec_slave_config_t *sc, /**< Slave configuration. */
         uint16_t watchdog_divider, /**< Number of 40 ns intervals. Used as a
-                                    base unit for all slave watchdogs. */
+                                     base unit for all slave watchdogs. If set
+                                     to zero, the value is not written, so the
+                                     default ist used. */
         uint16_t watchdog_intervals /**< Number of base intervals for process
-                                      data watchdog. */
+                                      data watchdog. If set to zero, the value
+                                      is not written, so the default is used.
+                                     */
         );
 
 /** Add a PDO to a sync manager's PDO assignment.