Index: trunk/src_plugins/export_openems/excitation.c
===================================================================
--- trunk/src_plugins/export_openems/excitation.c	(revision 24606)
+++ trunk/src_plugins/export_openems/excitation.c	(revision 24607)
@@ -27,6 +27,7 @@
 #include "config.h"
 
 #include "hid_dad.h"
+#include "event.h"
 
 #define MAX_EXC 16
 #define FREQ_MAX 10000000000L
@@ -293,6 +294,14 @@
 	memset(ctx, 0, sizeof(exc_ctx_t)); /* reset all states to the initial - includes ctx->active = 0; */
 }
 
+static void exc_load_all(void)
+{
+	const exc_t *e;
+	int n;
+	for(n = 0, e = excitations; e->name != NULL; n++,e++)
+		e->ser(n, 0);
+}
+
 static int load_selector(void)
 {
 	const char *type = pcb_attribute_get(&PCB->Attributes, AEPREFIX "type");
@@ -395,6 +404,7 @@
 
 	load_selector();
 	select_update(1);
+	exc_load_all();
 }
 
 static const char pcb_acts_OpenemsExcitation[] = 
@@ -420,3 +430,18 @@
 	return excitations[exc_ctx.selected].get(exc_ctx.selected);
 }
 
+static void exc_ev_board_changed(void *user_data, int argc, pcb_event_arg_t argv[])
+{
+	if (exc_ctx.active)
+		exc_load_all();
+}
+
+static void pcb_openems_excitation_init(void)
+{
+	pcb_event_bind(PCB_EVENT_BOARD_CHANGED, exc_ev_board_changed, NULL, openems_cookie);
+}
+
+static void pcb_openems_excitation_uninit(void)
+{
+	pcb_event_unbind_allcookie(openems_cookie);
+}
Index: trunk/src_plugins/export_openems/export_openems.c
===================================================================
--- trunk/src_plugins/export_openems/export_openems.c	(revision 24606)
+++ trunk/src_plugins/export_openems/export_openems.c	(revision 24607)
@@ -838,6 +838,7 @@
 
 void pplg_uninit_export_openems(void)
 {
+	pcb_openems_excitation_uninit();
 	pcb_remove_actions_by_cookie(openems_cookie);
 	pcb_hid_remove_attributes_by_cookie(openems_cookie);
 }
@@ -883,5 +884,7 @@
 
 	PCB_REGISTER_ACTIONS(openems_action_list, openems_cookie);
 
+	pcb_openems_excitation_init();
+
 	return 0;
 }