diff --git a/site_ansto/instrument/config/environment/temperature/sct_lakeshore_336.tcl b/site_ansto/instrument/config/environment/temperature/sct_lakeshore_336.tcl
index 12b94151..ad814667 100644
--- a/site_ansto/instrument/config/environment/temperature/sct_lakeshore_336.tcl
+++ b/site_ansto/instrument/config/environment/temperature/sct_lakeshore_336.tcl
@@ -711,8 +711,13 @@ proc inTolerance {CtrlLoopIdx} {
           }
           if {$cmpIdString == 0 } {
             set wrStatus [ hgetpropval $tc_root/sensor/setpoint$CtrlLoopIdx writestatus ]
-            if {$wrStatus == "start"} {
-              continue
+            switch $wrStatus {
+              "start" { continue }
+              "commandsent" {
+                sct utime timecheck
+                sct utime timecheck2
+                hsetprop $tc_root/sensor/setpoint$CtrlLoopIdx writestatus "ws_monitor"
+              }
             }
             # set nodename $tc_root/control/config_Loop_$CtrlLoopIdx
             # set iSensor [hval $nodename]
@@ -1082,8 +1087,7 @@ proc getCorrespondingInputSensor {CtrlLoopIdx} {
 # @param   iSensor   indicates the corresponding input sensor (A,B,C or D)
 # @return  retVal    returns 1 if in tolerance, 0 else.
 proc checktol {tc_root currtime timecheck iLoop iSensor} {
-  if {[ catch {
-    set retVal 0
+  set catch_status [ catch {
     set sensorValue $tc_root/sensor/sensorValue$iSensor
     set temp  [hval $sensorValue]
     set isetp $tc_root/sensor/setpoint$iLoop
@@ -1107,7 +1111,7 @@ proc checktol {tc_root currtime timecheck iLoop iSensor} {
       if {$::scobj::ls336::ls336_verbose==1} {puts "hset $tc_root/emon/isInTolerance_Lp$iLoop outsideTolerance"}
       if {$iLoop==1} { sct utime timecheck }
       if {$iLoop==2} { sct utime timecheck2 }
-      set retVal 0
+      return 0
     } else {
       set timeout $::scobj::ls336::ls340_settleTime
       if { $::scobj::ls336::ls336_LSmodel == 340 } {
@@ -1120,20 +1124,18 @@ proc checktol {tc_root currtime timecheck iLoop iSensor} {
         if {$::scobj::ls336::ls336_verbose==1} {
           puts "hset $tc_root/emon/isInTolerance_Lp$iLoop inTolerance (elapsedTime=$elapsedTime greater than settleTime=$timeout)"
         }
-        set retVal 1
+        return 1
       } else {
         # Temperature has not been within tolerance for enough time - (overshoots, oscillations,..)
         hset $tc_root/emon/isInTolerance_Lp$iLoop "outsideTolerance"
         if {$::scobj::ls336::ls336_verbose==1} {
           puts "hset $tc_root/emon/isInTolerance_Lp$iLoop outsideTolerance (elapsedTime=$elapsedTime less than settleTime=$timeout)"
         }
-        set retVal 0
+        return 0
       }
     }
-  } message ]} {
-    return -code error "in checktol: $message. Last query command: $::scobj::ls336::ls336_lastQueryCmd"
-  }
-  return $retVal
+  } message ]
+  handle_exception $catch_status $message "Last query command: $::scobj::ls336::ls336_lastQueryCmd"
 }
 
 
diff --git a/site_ansto/instrument/config/environment/temperature/sct_lakeshore_340.tcl b/site_ansto/instrument/config/environment/temperature/sct_lakeshore_340.tcl
index a5440afa..c1a44276 100644
--- a/site_ansto/instrument/config/environment/temperature/sct_lakeshore_340.tcl
+++ b/site_ansto/instrument/config/environment/temperature/sct_lakeshore_340.tcl
@@ -711,8 +711,13 @@ proc inTolerance {CtrlLoopIdx} {
           }
           if {$cmpIdString == 0 } {
             set wrStatus [ hgetpropval $tc_root/sensor/setpoint$CtrlLoopIdx writestatus ]
-            if {$wrStatus == "start"} {
-              continue
+            switch $wrStatus {
+              "start" { continue }
+              "commandsent" {
+                sct utime timecheck
+                sct utime timecheck2
+                hsetprop $tc_root/sensor/setpoint$CtrlLoopIdx writestatus "ws_monitor"
+              }
             }
             # set nodename $tc_root/control/config_Loop_$CtrlLoopIdx
             # set iSensor [hval $nodename]
@@ -1082,8 +1087,7 @@ proc getCorrespondingInputSensor {CtrlLoopIdx} {
 # @param   iSensor   indicates the corresponding input sensor (A,B,C or D)
 # @return  retVal    returns 1 if in tolerance, 0 else.
 proc checktol {tc_root currtime timecheck iLoop iSensor} {
-  if {[ catch {
-    set retVal 0
+  set catch_status [ catch {
     set sensorValue $tc_root/sensor/sensorValue$iSensor
     set temp  [hval $sensorValue]
     set isetp $tc_root/sensor/setpoint$iLoop
@@ -1107,7 +1111,7 @@ proc checktol {tc_root currtime timecheck iLoop iSensor} {
       if {$::scobj::ls340::ls340_verbose==1} {puts "hset $tc_root/emon/isInTolerance_Lp$iLoop outsideTolerance"}
       if {$iLoop==1} { sct utime timecheck }
       if {$iLoop==2} { sct utime timecheck2 }
-      set retVal 0
+      return 0
     } else {
       set timeout $::scobj::ls340::ls340_settleTime
       if { $::scobj::ls340::ls340_LSmodel == 340 } {
@@ -1120,20 +1124,18 @@ proc checktol {tc_root currtime timecheck iLoop iSensor} {
         if {$::scobj::ls340::ls340_verbose==1} {
           puts "hset $tc_root/emon/isInTolerance_Lp$iLoop inTolerance (elapsedTime=$elapsedTime greater than settleTime=$timeout)"
         }
-        set retVal 1
+        return 1
       } else {
         # Temperature has not been within tolerance for enough time - (overshoots, oscillations,..)
         hset $tc_root/emon/isInTolerance_Lp$iLoop "outsideTolerance"
         if {$::scobj::ls340::ls340_verbose==1} {
           puts "hset $tc_root/emon/isInTolerance_Lp$iLoop outsideTolerance (elapsedTime=$elapsedTime less than settleTime=$timeout)"
         }
-        set retVal 0
+        return 0
       }
     }
-  } message ]} {
-    return -code error "in checktol: $message. Last query command: $::scobj::ls340::ls340_lastQueryCmd"
-  }
-  return $retVal
+  } message ]
+  handle_exception $catch_status $message "Last query command: $::scobj::ls340::ls340_lastQueryCmd"
 }