diff -r 4522459bb5a4 -r 2b017fcc1c6d master/fsm_pdo.c
--- a/master/fsm_pdo.c	Tue Jan 20 08:04:50 2009 +0000
+++ b/master/fsm_pdo.c	Tue Jan 20 09:55:32 2009 +0000
@@ -225,8 +225,8 @@
     if (ec_fsm_coe_exec(fsm->fsm_coe)) return;
 
     if (!ec_fsm_coe_success(fsm->fsm_coe)) {
-        EC_ERR("Failed to read number of assigned PDOs for SM%u.\n",
-                fsm->sync_index);
+        EC_ERR("Failed to read number of assigned PDOs for SM%u"
+                " of slave %u.\n", fsm->sync_index, fsm->slave->ring_position);
         fsm->state = ec_fsm_pdo_state_error;
         return;
     }