diff -r ec0b5d9a2ff1 -r 777d1a8b3a27 master/slave_config.h
--- a/master/slave_config.h	Mon Mar 16 14:18:55 2015 -0400
+++ b/master/slave_config.h	Thu Mar 26 15:16:21 2015 -0400
@@ -130,6 +130,8 @@
     uint16_t watchdog_intervals; /**< Process data watchdog intervals (see
                                    spec. reg. 0x0420). */
 
+    uint8_t allow_overlapping_pdos;	/**< Allow input PDOs use the same frame space
+                                      as output PDOs. */
     ec_slave_t *slave; /**< Slave pointer. This is \a NULL, if the slave is
                          offline. */