diff --git a/site_ansto/instrument/reflectometer/DMC2280/controller1.txt b/site_ansto/instrument/reflectometer/DMC2280/controller1.txt
index ff627ff6..5aa9f001 100644
--- a/site_ansto/instrument/reflectometer/DMC2280/controller1.txt
+++ b/site_ansto/instrument/reflectometer/DMC2280/controller1.txt
@@ -1,7 +1,7 @@
 NO TE: PLATYPUS - CONTROLLER 1
 NO TE:
-NO TE: $Revision: 1.6 $
-NO TE: $Date: 2007-03-05 05:37:21 $
+NO TE: $Revision: 1.7 $
+NO TE: $Date: 2007-03-05 06:03:11 $
 NO TE: Author: Dan Bartlett
 NO TE: Last revision by: $Author: dbx $
 NO TE:
@@ -27,14 +27,14 @@ DC 25000,25000,25000,25000,25000,25000,,;' SET DECELERATION
 SP 50000,25000,25000,25000,75000,75000,,;' SET SPEED
 SIA=1,25,13,0<-2>2;'HEIDENHAIN ROQ425
 SIB=1,25,13,0<-2>2;'HEIDENHAIN ROQ425
-SIC=1,24,18,6<-2>2;'IVO
+SIC=1,24,18,6<-2>2;'IVO GDA2S
 SID=1,25,13,0<-2>2;'HEIDENHAIN ROQ425
 SIE=1,25,13,0<-2>2;'HEIDENHAIN ROQ425
 SIF=1,25,13,0<-2>2;'HEIDENHAIN ROQ425
 SIG=0,25,13,0<-2>2;'SPARE
 SIH=0,25,13,0<-2>2;'SPARE
-POS=0;' INITIAL BEAM ATTENUATOR FREQUENCY IS 0, PARKED IN THE BEAM
-XQ #ATTEN,1
+POS=0;' INITIAL BEAM ATTENUATOR POSITION IS PARKED IN THE BEAM
+XQ #ATTEN,1;' EXECUTE PROCEDURE TO CONTROL BEAM ATTENUATOR
 JS #THREAD0
 EN
 NO ----------------------------------------
@@ -141,7 +141,7 @@ NO DCH=OLDDCH
 RE
 NO ----------------------------------------
 #ATTEN
-DEADBD=20
+DEADBD=20;' SET ENCODER DEADBAND
 PARKPOS=8309158; 'PARKING ENCODER POSITION
 SHUTPOS=8390307; 'BEAM SHUT ENCODER POSITION
 STRTPOS=8390307; 'OSCILLATING START ENCODER POSITION
@@ -177,7 +177,7 @@ PRD=(_TPD - STRTPOS)/8192*25000
 BGD
 AMD
 SPD=180000
-ACD=_SPD*4;' 0.5S TO ACCELERATE
+ACD=_SPD*4;' 0.25S TO ACCELERATE
 DCD=_ACD
 #LOOP
 PRD=140625;' 90MM = 60MM IN THE BEAM, 15MM FOR ACCEL AND 15MM FOR DECEL