diff --git a/script/test/test.py b/script/test/test.py
index 4d187dc..dab01cd 100644
--- a/script/test/test.py
+++ b/script/test/test.py
@@ -1,9 +1,9 @@
 
-caput("X11MA-PHS:E_SP",850)
+caput("X11MA-PHS:E_SP",845)
 
-Eset = 850
+Eset = 845
 error = 10.0
-while sqrt(error*error) > 0.2: 
+while abs(error) > 0.2: 
     time.sleep(1.0)
     Ecurr = caget("X11MA-PGM:rbkenergy",'i')
     error = Eset-Ecurr