--- a/thermferm/thermferm.h	Tue Aug 05 16:24:17 2014 +0200
+++ b/thermferm/thermferm.h	Tue Aug 05 21:33:06 2014 +0200
@@ -91,6 +91,7 @@
     time_t		prof_started;		/* Profile start time		*/
     int			prof_state;		/* Profile OFF|PAUSE|RUN|DONE	*/
     float		prof_target;		/* Profile current target temp	*/
+    float		PID_I_err;		/* PID Intergal error		*/
     float		PID_err_old;		/* PID old error value		*/
 } units_list;