diff --git a/slsDetectorSoftware/usersFunctions/angleFunction.h b/slsDetectorSoftware/usersFunctions/angleFunction.h
new file mode 100644
index 000000000..65e3decd3
--- /dev/null
+++ b/slsDetectorSoftware/usersFunctions/angleFunction.h
@@ -0,0 +1,12 @@
+
+
+/* 
+   contains the conversion channel-angle for a module channel
+   conv_r=pitch/radius
+*/
+
+
+double defaultAngleFunction(double ichan, double encoder, double totalOffset, double conv_r, double center, double offset, double tilt, int direction) {\ 
+    (void) tilt;				\
+   return 180./PI*(center*conv_r+direction*atan((double)(ichan-center)*conv_r))+encoder+totalOffset+offset;\
+};
diff --git a/slsDetectorSoftware/usersFunctions/usersFunctions.cpp b/slsDetectorSoftware/usersFunctions/usersFunctions.cpp
index 0315d4038..229b495cc 100644
--- a/slsDetectorSoftware/usersFunctions/usersFunctions.cpp
+++ b/slsDetectorSoftware/usersFunctions/usersFunctions.cpp
@@ -99,11 +99,6 @@ int caput(chid ch_id,  double value) {
 
 
 
-
-
-
-
-
 #endif
 
 
@@ -111,27 +106,6 @@ int caput(chid ch_id,  double value) {
 
 
 
-
-/* 
-   contains the conversion channel-angle for a module channel
-   conv_r=pitch/radius
-*/
-
-
-double defaultAngleFunction(double ichan, double encoder, double totalOffset, double conv_r, double center, double offset, double tilt, int direction) {
- 
-  
-  (void) tilt; /* to avoid warning: unused parameter */
-  double ang;
-
-  ang=180./PI*(center*conv_r+direction*atan((double)(ichan-center)*conv_r))+encoder+totalOffset+offset;
-
-  
-
-  return ang;
-
-}
-
 /* reads the encoder and returns the position */
 
 double defaultGetPosition(void *d) {
diff --git a/slsDetectorSoftware/usersFunctions/usersFunctions.h b/slsDetectorSoftware/usersFunctions/usersFunctions.h
index ec2bae586..eabc26b71 100644
--- a/slsDetectorSoftware/usersFunctions/usersFunctions.h
+++ b/slsDetectorSoftware/usersFunctions/usersFunctions.h
@@ -14,6 +14,7 @@ Functions depending on the experimental setup should be defined here
 #include <epicsEvent.h>
 #endif
 #include "detectorData.h"
+#include "angleFunction.h"
 
 #ifdef __cplusplus
 extern "C" {