diff --git a/config/devices.properties b/config/devices.properties
index faf1d3f..c3334a5 100644
--- a/config/devices.properties
+++ b/config/devices.properties
@@ -1,2 +1,3 @@
 crystal=ch.psi.pshell.epics.ChannelDouble|X10DA-OP-MO3:Bragg2dSpacAO|||true
 #bragg=ch.psi.pshell.crlogic.CrlogicPositioner|X10DA-OP-MO3:ROX X10DA-ES1-DCM:EC|||false
+scaler=ch.psi.pshell.epics.Scaler|X10DA-ES-SCALER|||true
diff --git a/script/crlogic.py b/script/crlogic.py
index 47f31f0..84dfc10 100644
--- a/script/crlogic.py
+++ b/script/crlogic.py
@@ -1,6 +1,15 @@
+
+
 caput("X10DA-ES-SCALER.CNT", 0)
 caput("X10DA-ES-SCALER.G1", 0)
 caput("X10DA-ES-SCALER.CONT", 0)
+"""
+scaler.stop()
+scaler.channels[0].setPreset(False)
+#scaler.channels[0].setPresetValue(0)
+scaler.setOneShot()
+"""
+
 caput("X10DA-ES1:START-CSMPL", 1)
 caput("X10DA-ES1:TOTAL-CYCLES", 5)
 caput("X10DA-ES1:SMPL-BTN", 1)
@@ -21,7 +30,7 @@ class ECalc(Readable):
         return 12.39842 / ( crystal.take() * math.sin( math.radians(bragg.take())) )        
 e_calc = ECalc()
 
-sensors = [crystal, i0, i1, i2, ref, abs_calc, e_calc]
+sensors = [RegisterCache(crystal), i0, i1, i2, ref, abs_calc, e_calc]
 
 
 bragg.initialize()