diff --git a/site_ansto/instrument/config/environment/temperature/sct_west_6100.tcl b/site_ansto/instrument/config/environment/temperature/sct_west_6100.tcl
index 5b1bd613..11de806d 100644
--- a/site_ansto/instrument/config/environment/temperature/sct_west_6100.tcl
+++ b/site_ansto/instrument/config/environment/temperature/sct_west_6100.tcl
@@ -126,7 +126,10 @@ proc ::scobj::west_6100::rdDecimal {tc_root} {
       error "[sct geterror]"
     }
 # rdDecimal hook code starts
-    set data [expr {0.10 * ${data}}]
+    set decimal [hval ${tc_root}/aux/decimal]
+    if { ${decimal} > 0 } {
+      set data [expr {pow(10, -${decimal}) * ${data}}]
+    }
 # rdDecimal hook code ends
     if { [hpropexists [sct] geterror] } {
       debug_log ${tc_root} 9 "[sct] error: [sct geterror]"
@@ -203,7 +206,12 @@ proc ::scobj::west_6100::wrDecimal {tc_root nextState cmd_str} {
     set par [sct target]
     set cmd "${cmd_str}${par}"
 # wrDecimal hook code starts
-    set par [expr {round(10.0 * [sct target])}]
+    set decimal [hval ${tc_root}/aux/decimal]
+    set par [sct target]
+    if { ${decimal} > 0 } {
+      set par [expr {pow(10, ${decimal}) * ${par}}]
+    }
+    set par [expr {round(${par})}]
     set cmd "1:16:${cmd_str}:1:U16:${par}"
 # wrDecimal hook code ends
     if { [hpropexists [sct] geterror] } {
@@ -424,6 +432,7 @@ proc ::scobj::west_6100::mkDriver { sct_controller name ip_address tcp_port dev_
     hsetprop ${scobj_hpath}/aux/decimal mutable false
     hsetprop ${scobj_hpath}/aux/decimal nxsave false
     hsetprop ${scobj_hpath}/aux/decimal oldval 0
+    hset     ${scobj_hpath}/aux/decimal        0
     hsetprop ${scobj_hpath}/aux/decimal sdsinfo "::nexus::scobj::sdsinfo"
     hsetprop ${scobj_hpath}/aux/decimal type "part"
     hsetprop ${scobj_hpath}/aux/decimal nxalias "${name}_aux_decimal"
diff --git a/site_ansto/instrument/config/environment/temperature/west_6100.sct b/site_ansto/instrument/config/environment/temperature/west_6100.sct
index 72ff7050..178d25b7 100644
--- a/site_ansto/instrument/config/environment/temperature/west_6100.sct
+++ b/site_ansto/instrument/config/environment/temperature/west_6100.sct
@@ -34,7 +34,7 @@ driver west_6100 = {
     fetch_function = getInteger;
     read_function = rdInteger;
     var model = { type = int; read_command = "122"; }
-    var decimal = { type = int; read_command = "18"; }
+    var decimal = { type = int; read_command = "18"; value = 0; }
     var instatus = { type = int; read_command = "133"; }
   }
   code fetch_function getInteger = {
@@ -59,12 +59,20 @@ driver west_6100 = {
   }
   code read_function rdDecimal = {
     @TCL
-    set data [expr {0.10 * ${data}}]
+    set decimal [hval ${tc_root}/aux/decimal]
+    if { ${decimal} > 0 } {
+      set data [expr {pow(10, -${decimal}) * ${data}}]
+    }
     @END
   }
   code write_function wrDecimal = {
     @TCL
-    set par [expr {round(10.0 * [sct target])}]
+    set decimal [hval ${tc_root}/aux/decimal]
+    set par [sct target]
+    if { ${decimal} > 0 } {
+      set par [expr {pow(10, ${decimal}) * ${par}}]
+    }
+    set par [expr {round(${par})}]
     set cmd "1:16:${cmd_str}:1:U16:${par}"
     @END
   }