diff --git a/devices/slit1H neg blade.properties b/devices/slit1H neg blade.properties
index a42c363..ab0bc55 100644
--- a/devices/slit1H neg blade.properties	
+++ b/devices/slit1H neg blade.properties	
@@ -2,9 +2,9 @@
 accessType=ReadWrite
 defaultSpeed=1.0
 maxSpeed=100.0
-maxValue=NaN
+maxValue=3.0
 minSpeed=0.001
-minValue=NaN
+minValue=-3.0
 offset=0.0
 precision=3
 resolution=NaN
diff --git a/devices/slit1H pos blade.properties b/devices/slit1H pos blade.properties
index a42c363..ab0bc55 100644
--- a/devices/slit1H pos blade.properties	
+++ b/devices/slit1H pos blade.properties	
@@ -2,9 +2,9 @@
 accessType=ReadWrite
 defaultSpeed=1.0
 maxSpeed=100.0
-maxValue=NaN
+maxValue=3.0
 minSpeed=0.001
-minValue=NaN
+minValue=-3.0
 offset=0.0
 precision=3
 resolution=NaN
diff --git a/devices/slit1V neg blade.properties b/devices/slit1V neg blade.properties
index a42c363..ab0bc55 100644
--- a/devices/slit1V neg blade.properties	
+++ b/devices/slit1V neg blade.properties	
@@ -2,9 +2,9 @@
 accessType=ReadWrite
 defaultSpeed=1.0
 maxSpeed=100.0
-maxValue=NaN
+maxValue=3.0
 minSpeed=0.001
-minValue=NaN
+minValue=-3.0
 offset=0.0
 precision=3
 resolution=NaN
diff --git a/devices/slit1V pos blade.properties b/devices/slit1V pos blade.properties
index a42c363..ab0bc55 100644
--- a/devices/slit1V pos blade.properties	
+++ b/devices/slit1V pos blade.properties	
@@ -2,9 +2,9 @@
 accessType=ReadWrite
 defaultSpeed=1.0
 maxSpeed=100.0
-maxValue=NaN
+maxValue=3.0
 minSpeed=0.001
-minValue=NaN
+minValue=-3.0
 offset=0.0
 precision=3
 resolution=NaN
diff --git a/devices/slit2H neg blade.properties b/devices/slit2H neg blade.properties
index 6cd4c11..ab0bc55 100644
--- a/devices/slit2H neg blade.properties	
+++ b/devices/slit2H neg blade.properties	
@@ -1,10 +1,10 @@
-#Thu Apr 02 14:15:43 CEST 2015
+#Thu Apr 02 14:22:31 CEST 2015
 accessType=ReadWrite
 defaultSpeed=1.0
 maxSpeed=100.0
-maxValue=NaN
+maxValue=3.0
 minSpeed=0.001
-minValue=NaN
+minValue=-3.0
 offset=0.0
 precision=3
 resolution=NaN
diff --git a/devices/slit2H pos blade.properties b/devices/slit2H pos blade.properties
index 6cd4c11..ab0bc55 100644
--- a/devices/slit2H pos blade.properties	
+++ b/devices/slit2H pos blade.properties	
@@ -1,10 +1,10 @@
-#Thu Apr 02 14:15:43 CEST 2015
+#Thu Apr 02 14:22:31 CEST 2015
 accessType=ReadWrite
 defaultSpeed=1.0
 maxSpeed=100.0
-maxValue=NaN
+maxValue=3.0
 minSpeed=0.001
-minValue=NaN
+minValue=-3.0
 offset=0.0
 precision=3
 resolution=NaN
diff --git a/devices/slit2V neg blade.properties b/devices/slit2V neg blade.properties
index 6cd4c11..ab0bc55 100644
--- a/devices/slit2V neg blade.properties	
+++ b/devices/slit2V neg blade.properties	
@@ -1,10 +1,10 @@
-#Thu Apr 02 14:15:43 CEST 2015
+#Thu Apr 02 14:22:31 CEST 2015
 accessType=ReadWrite
 defaultSpeed=1.0
 maxSpeed=100.0
-maxValue=NaN
+maxValue=3.0
 minSpeed=0.001
-minValue=NaN
+minValue=-3.0
 offset=0.0
 precision=3
 resolution=NaN
diff --git a/devices/slit2V pos blade.properties b/devices/slit2V pos blade.properties
index 6cd4c11..ab0bc55 100644
--- a/devices/slit2V pos blade.properties	
+++ b/devices/slit2V pos blade.properties	
@@ -1,10 +1,10 @@
-#Thu Apr 02 14:15:43 CEST 2015
+#Thu Apr 02 14:22:31 CEST 2015
 accessType=ReadWrite
 defaultSpeed=1.0
 maxSpeed=100.0
-maxValue=NaN
+maxValue=3.0
 minSpeed=0.001
-minValue=NaN
+minValue=-3.0
 offset=0.0
 precision=3
 resolution=NaN