Index: leahi_dialin/common/msg_defs.py
===================================================================
diff -u -r41de945f9c773e54e965e80d9e46def828beb732 -r775f2d7ca9a4d1c86c02bc27130f8765dc4156ad
--- leahi_dialin/common/msg_defs.py	(.../msg_defs.py)	(revision 41de945f9c773e54e965e80d9e46def828beb732)
+++ leahi_dialin/common/msg_defs.py	(.../msg_defs.py)	(revision 775f2d7ca9a4d1c86c02bc27130f8765dc4156ad)
@@ -14,15 +14,13 @@
 #
 ############################################################################
 from enum import unique
-from ..utils.base import DialinEnum
+from ..utils.enums import DialinEnum
 from .msg_ids import MsgIds
+from .constants import MSG_HEADER_SIZE
 
+ACK_NOT_REQUIRED = [ ]
 
-ACK_NOT_REQUIRED = [
 
-]
-
-
 @unique
 class RequestRejectReasons(DialinEnum):
     REQUEST_REJECT_REASON_NONE = 0
@@ -75,9 +73,10 @@
     REQUEST_REJECT_REASON_TREATMENT_CANNOT_BE_RESUMED = 47
 RequestRejectReasons._str_list = {}
 
+
 class MsgFieldPositions:
     # Generic response msg field byte positions (where 32-bit data fields are used)
-    START_POS_FIELD_1 = 6  # Hardcoded for now to avoid cyclic import issue. See protocols.CAN.DenaliMessage class
+    START_POS_FIELD_1 = MSG_HEADER_SIZE         # Hardcoded for now to avoid cyclic import issue. See protocols.CAN.CanMessage class
     END_POS_FIELD_1 = START_POS_FIELD_1 + 4
     START_POS_FIELD_2 = END_POS_FIELD_1
     END_POS_FIELD_2 = START_POS_FIELD_2 + 4
@@ -135,11 +134,77 @@
     END_POS_FIELD_28 = START_POS_FIELD_28 + 4
     START_POS_FIELD_29 = END_POS_FIELD_28
     END_POS_FIELD_29 = START_POS_FIELD_29 + 4
+    START_POS_FIELD_30 = END_POS_FIELD_29
+    END_POS_FIELD_30 = START_POS_FIELD_29 + 4
+    START_POS_FIELD_31 = END_POS_FIELD_30
+    END_POS_FIELD_31 = START_POS_FIELD_30 + 4
+    START_POS_FIELD_32 = END_POS_FIELD_31
+    END_POS_FIELD_32 = START_POS_FIELD_31 + 4
+    START_POS_FIELD_33 = END_POS_FIELD_32
+    END_POS_FIELD_33 = START_POS_FIELD_32 + 4
+    START_POS_FIELD_34 = END_POS_FIELD_33
+    END_POS_FIELD_34 = START_POS_FIELD_33 + 4
+    START_POS_FIELD_35 = END_POS_FIELD_34
+    END_POS_FIELD_35 = START_POS_FIELD_34 + 4
+    START_POS_FIELD_36 = END_POS_FIELD_35
+    END_POS_FIELD_36 = START_POS_FIELD_35 + 4
+    START_POS_FIELD_37 = END_POS_FIELD_36
+    END_POS_FIELD_37 = START_POS_FIELD_36 + 4
+    START_POS_FIELD_38 = END_POS_FIELD_37
+    END_POS_FIELD_38 = START_POS_FIELD_37 + 4
+    START_POS_FIELD_39 = END_POS_FIELD_38
+    END_POS_FIELD_39 = START_POS_FIELD_38 + 4
+    START_POS_FIELD_40 = END_POS_FIELD_39
+    END_POS_FIELD_40 = START_POS_FIELD_39 + 4
+    START_POS_FIELD_41 = END_POS_FIELD_40
+    END_POS_FIELD_41 = START_POS_FIELD_40 + 4
+    START_POS_FIELD_42 = END_POS_FIELD_41
+    END_POS_FIELD_42 = START_POS_FIELD_41 + 4
+    START_POS_FIELD_43 = END_POS_FIELD_42
+    END_POS_FIELD_43 = START_POS_FIELD_42 + 4
+    START_POS_FIELD_44 = END_POS_FIELD_43
+    END_POS_FIELD_44 = START_POS_FIELD_43 + 4
+    START_POS_FIELD_45 = END_POS_FIELD_44
+    END_POS_FIELD_45 = START_POS_FIELD_44 + 4
+    START_POS_FIELD_46 = END_POS_FIELD_45
+    END_POS_FIELD_46 = START_POS_FIELD_45 + 4
+    START_POS_FIELD_47 = END_POS_FIELD_46
+    END_POS_FIELD_47 = START_POS_FIELD_46 + 4
+    START_POS_FIELD_48 = END_POS_FIELD_47
+    END_POS_FIELD_48 = START_POS_FIELD_47 + 4
+    START_POS_FIELD_49 = END_POS_FIELD_48
+    END_POS_FIELD_49 = START_POS_FIELD_48 + 4
+    START_POS_FIELD_50 = END_POS_FIELD_49
+    END_POS_FIELD_50 = START_POS_FIELD_49 + 4
+    START_POS_FIELD_51 = END_POS_FIELD_50
+    END_POS_FIELD_51 = START_POS_FIELD_50 + 4
+    START_POS_FIELD_52 = END_POS_FIELD_51
+    END_POS_FIELD_52 = START_POS_FIELD_51 + 4
+    START_POS_FIELD_53 = END_POS_FIELD_52
+    END_POS_FIELD_53 = START_POS_FIELD_52 + 4
+    START_POS_FIELD_54 = END_POS_FIELD_53
+    END_POS_FIELD_54 = START_POS_FIELD_53 + 4
+    START_POS_FIELD_55 = END_POS_FIELD_54
+    END_POS_FIELD_55 = START_POS_FIELD_54 + 4
+    START_POS_FIELD_56 = END_POS_FIELD_55
+    END_POS_FIELD_56 = START_POS_FIELD_55 + 4
+    START_POS_FIELD_57 = END_POS_FIELD_56
+    END_POS_FIELD_57 = START_POS_FIELD_56 + 4
+    START_POS_FIELD_58 = END_POS_FIELD_57
+    END_POS_FIELD_58 = START_POS_FIELD_57 + 4
+    START_POS_FIELD_59 = END_POS_FIELD_58
+    END_POS_FIELD_59 = START_POS_FIELD_58 + 4
+    START_POS_FIELD_60 = END_POS_FIELD_59
+    END_POS_FIELD_60 = START_POS_FIELD_59 + 4
+    START_POS_FIELD_61 = END_POS_FIELD_60
+    END_POS_FIELD_61 = START_POS_FIELD_60 + 4
+    START_POS_FIELD_62 = END_POS_FIELD_61
+    END_POS_FIELD_62 = START_POS_FIELD_61 + 4
 
 
 class MsgFieldPositionsFWVersions:
     # UI version message field positions
-    START_POS_MAJOR = 6 # Hardcoded for now to avoid cyclic import issue. See protocols.CAN.DenaliMessage class
+    START_POS_MAJOR = MSG_HEADER_SIZE       # Hardcoded for now to avoid cyclic import issue. See protocols.CAN.CanMessage class
     END_POS_MAJOR = START_POS_MAJOR + 1
     START_POS_MINOR = END_POS_MAJOR
     END_POS_MINOR = START_POS_MINOR + 1
@@ -156,4 +221,4 @@
     START_POS_FPGA_MICRO = END_POS_FPGA_MINOR
     END_POS_FPGA_MICRO = START_POS_FPGA_MICRO + 1
     START_POS_COMPATIBILITY_REV = END_POS_FPGA_MICRO
-    END_POS_COMPATIBILITY_REV = START_POS_COMPATIBILITY_REV + 4
\ No newline at end of file
+    END_POS_COMPATIBILITY_REV = START_POS_COMPATIBILITY_REV + 4