diff --git a/site_ansto/instrument/config/environment/isotech_ps.sct b/site_ansto/instrument/config/environment/isotech_ps.sct
index 585a29d4..ea3672f4 100644
--- a/site_ansto/instrument/config/environment/isotech_ps.sct
+++ b/site_ansto/instrument/config/environment/isotech_ps.sct
@@ -5,7 +5,7 @@ driver isotech_ps = {
   vendor = isotech; device = ps; protocol = std;
   class = environment;
   simulation_group = environment_simulation;
-  protocol_args = '"\r"';
+  protocol_args = '{terminator \r}';
   group = {
     readable = 5
     mutable = true
diff --git a/site_ansto/instrument/config/environment/temperature/julabo_lh45.sct b/site_ansto/instrument/config/environment/temperature/julabo_lh45.sct
index 20b2f7e3..6d490b51 100644
--- a/site_ansto/instrument/config/environment/temperature/julabo_lh45.sct
+++ b/site_ansto/instrument/config/environment/temperature/julabo_lh45.sct
@@ -8,7 +8,7 @@ driver julabo_lh45_gen = {
   simulation_group = environment_simulation
   add_args = '{id 1} {ctrl_sensor "bath"} {tol 5.0}';
   make_args = 'id ctrl_sensor tol';
-  protocol_args = '"\r"';
+  protocol_args = '{terminator \r}';
 #
 # Unnamed group has variables at device level
 #
diff --git a/site_ansto/instrument/config/environment/temperature/ls340.sct b/site_ansto/instrument/config/environment/temperature/ls340.sct
index 6ac3fcdf..bd7e4de2 100644
--- a/site_ansto/instrument/config/environment/temperature/ls340.sct
+++ b/site_ansto/instrument/config/environment/temperature/ls340.sct
@@ -1,10 +1,11 @@
 # vim: ts=8 sts=2 sw=2 expandtab autoindent smartindent nocindent
 driver ls340 = {
-  protocol = std
+  protocol = std;
   class = environment
   simulation_group = environment_simulation
   add_args = 'id datype {tol1 1.0} {tol2 1.0}'
-  make_args = 'id datype tol1 tol2'
+  make_args = 'id datype {tol1 1.0} {tol2 1.0}'
+  protocol_args = '{terminator \r\n}'
   code mkDriver = {%%
     ::scobj::ls340::mk_sct_lakeshore_340 $sct_controller environment $name $id $datype $tol1 $tol2 0
   %%}