diff --git a/APMrover2/Parameters.cpp b/APMrover2/Parameters.cpp
index 0732fce4c8..3b4c606818 100644
--- a/APMrover2/Parameters.cpp
+++ b/APMrover2/Parameters.cpp
@@ -13,6 +13,12 @@
 
 const AP_Param::Info Rover::var_info[] = {
 	GSCALAR(format_version,         "FORMAT_VERSION",   1),
+    
+    // @Param: SYSID_SW_TYPE
+    // @DisplayName: Software Type
+    // @Description: This is used by the ground station to recognise the software type (eg ArduPlane vs ArduCopter)
+    // @User: Advanced
+    // @ReadOnly: True
 	GSCALAR(software_type,          "SYSID_SW_TYPE",    Parameters::k_software_type),
 
 	// misc
diff --git a/AntennaTracker/Parameters.cpp b/AntennaTracker/Parameters.cpp
index ed262ea8dd..7f5695aad2 100644
--- a/AntennaTracker/Parameters.cpp
+++ b/AntennaTracker/Parameters.cpp
@@ -25,6 +25,7 @@ const AP_Param::Info Tracker::var_info[] = {
     // @Description: This is used by the ground station to recognise the software type (eg ArduPlane vs ArduCopter)
     // @Values: 0:ArduPlane,4:AntennaTracker,10:Copter,20:Rover
     // @User: Advanced
+    // @ReadOnly: True
     GSCALAR(software_type,          "SYSID_SW_TYPE",  Parameters::k_software_type),
 
     // @Param: SYSID_THISMAV
diff --git a/ArduCopter/Parameters.cpp b/ArduCopter/Parameters.cpp
index 9e3c9ecc6d..8df3355bf0 100644
--- a/ArduCopter/Parameters.cpp
+++ b/ArduCopter/Parameters.cpp
@@ -33,6 +33,7 @@ const AP_Param::Info Copter::var_info[] = {
     // @DisplayName: Eeprom format version number
     // @Description: This value is incremented when changes are made to the eeprom format
     // @User: Advanced
+    // @ReadOnly: True
     GSCALAR(format_version, "SYSID_SW_MREV",   0),
 
     // @Param: SYSID_SW_TYPE
@@ -40,6 +41,7 @@ const AP_Param::Info Copter::var_info[] = {
     // @Description: This is used by the ground station to recognise the software type (eg ArduPlane vs ArduCopter)
     // @Values: 0:ArduPlane,4:AntennaTracker,10:Copter,20:Rover
     // @User: Advanced
+    // @ReadOnly: True
     GSCALAR(software_type,  "SYSID_SW_TYPE",   Parameters::k_software_type),
 
     // @Param: SYSID_THISMAV
diff --git a/ArduPlane/Parameters.cpp b/ArduPlane/Parameters.cpp
index 10deae4963..4461359fb6 100644
--- a/ArduPlane/Parameters.cpp
+++ b/ArduPlane/Parameters.cpp
@@ -24,6 +24,7 @@ const AP_Param::Info Plane::var_info[] = {
     // @DisplayName: Software Type
     // @Description: This is used by the ground station to recognise the software type (eg ArduPlane vs ArduCopter)
     // @User: Advanced
+    // @ReadOnly: True
     GSCALAR(software_type,          "SYSID_SW_TYPE",  Parameters::k_software_type),
 
     // @Param: SYSID_THISMAV
diff --git a/Tools/autotest/param_metadata/param.py b/Tools/autotest/param_metadata/param.py
index 804ce25a9f..f36f100a1d 100644
--- a/Tools/autotest/param_metadata/param.py
+++ b/Tools/autotest/param_metadata/param.py
@@ -24,7 +24,9 @@ known_param_fields = [
              'Increment',
              'User',
              'RebootRequired',
-             'Bitmask'
+             'Bitmask',
+             'Volatile',
+             'ReadOnly'
                       ]
 
 required_param_fields = [
diff --git a/libraries/AP_Baro/AP_Baro.cpp b/libraries/AP_Baro/AP_Baro.cpp
index 5ad74c9fe4..fa9bff025f 100644
--- a/libraries/AP_Baro/AP_Baro.cpp
+++ b/libraries/AP_Baro/AP_Baro.cpp
@@ -45,6 +45,8 @@ const AP_Param::GroupInfo AP_Baro::var_info[] = {
     // @Description: calibrated ground pressure in Pascals
     // @Units: pascals
     // @Increment: 1
+    // @ReadOnly: True
+    // @Volatile: True
     AP_GROUPINFO("ABS_PRESS", 2, AP_Baro, sensors[0].ground_pressure, 0),
 
     // @Param: TEMP
@@ -52,6 +54,8 @@ const AP_Param::GroupInfo AP_Baro::var_info[] = {
     // @Description: calibrated ground temperature in degrees Celsius
     // @Units: degrees celsius
     // @Increment: 1
+    // @ReadOnly: True
+    // @Volatile: True
     AP_GROUPINFO("TEMP", 3, AP_Baro, sensors[0].ground_temperature, 0),
 
     // index 4 reserved for old AP_Int8 version in legacy FRAM