Index: SDDs/Trends.png
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Index: SDDs/Trends.puml
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--- SDDs/Trends.puml	(revision 0)
+++ SDDs/Trends.puml	(revision 8d206e7fd489b89cb4f9cfcac394bb61722164da)
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+@startuml Trends
+
+    participant DD                  as DD
+    participant TD                  as TD
+    participant SW                  as SW
+    participant UI                  as UI
+    actor       USER                as US
+
+    'Possible actions and interaction types
+    ' TD -> SW: MSG: Message
+    ' SW -> TD: MSG: Message
+    ' SW -> UI: CMD: command
+    ' UI -> SW: ACT: Action
+    ' US -> UI: User actions are:
+    '   ENT: User enters a value or string
+    '   TCH: User touches a button (RadioButton, CheckBox, ...)
+    '   SET: User sets/slides a slider
+    '   SCL: User scrolls a flipable area
+    '
+    'Messages conventions:
+    '[x<hex message ID> <Req/Rsp/Dat>  \n  <P1>,<P..>]
+    '[x<hex message ID> <Req/Rsp/Dat>  \n  <P1>,# certain amount of parameters according to the content]
+    '[x<hex message ID> <Req/Rsp/Dat>  \n  <P1>,X The rest of the parameters do not matter.]
+
+    note over UI
+        See Vitals SDD for details on Vitals Interval Timer
+    end note
+
+    == Trends Data - Data Collection ==
+    DD -> SW: MSG: [x1F: Data]\nDD Conductivity Data
+    SW -> SW: ACT: Cache Collected Data
+    TD -> SW: MSG: [x24: Data]\nPressure Data
+    SW -> SW: ACT: Cache Collected Data
+    TD -> SW: MSG: [x3D: Data]\nSaline Bolus Data
+    SW -> SW: ACT: Cache Collected Data
+    TD -> SW: MSG: [x3E: Data]\nUltrafiltration Data
+    SW -> SW: ACT: Cache Collected Data
+    TD -> SW: MSG: [x4F: Data]\nSet Point Data
+    SW -> SW: ACT: Cache Collected Data
+
+    == Trends History - Data Collection ==
+    TD -> SW: MSG: [x3B: id]\nTreatment Log Alarm
+    SW -> SW: Store Treatment Log Alarm data
+    SW -> UI: CMD: Display new Trend History entry
+    TD -> SW: MSG: [x3D: eventId]\nTreatment Log Event
+    SW -> SW: Store Treatment Log Event data
+    SW -> UI: CMD: Display new Trend History entry
+
+    == Interval Timer Timeout==
+    SW -> SW: ACT: Interval Timer Timeout
+    SW -> UI: ACT: onDidTimeout
+    alt Interval is OFF
+        UI -> SW: ACT: onNoVitalsRecord
+        SW -> SW: ACT: Record cached Trend Data as new entry (no Vitals)
+        SW -> UI: CMD: Display new Trend Data entry
+        SW -> SW: ACT: Clear Cached Data
+    else Interval is ON
+        alt Blood Pressure Cuff is Enabled
+            UI -> SW: ACT: onIntervalRequestVitals
+            SW -> SW: ACT: Snapshot and Timestamp Cached Data
+            SW -> TD: MSG: [x63: Req]\nVitals Request
+            alt accepted
+                TD -> SW: MSG: [x64: Rsp 1]\nVitals Response
+                alt Vitals Received
+                    TD -> SW: MSG: [x65: Data]\nVitals Data
+                    SW -> SW: ACT: Record cached Trend Data and Vitals Data as new entry 
+                    SW -> UI: CMD: Display new Trend Data entry
+                    SW -> SW: ACT: Clear Cached Data
+                else Vitals Wait 2 Minute Timeout
+                    SW -> UI: CMD: onDidTimeout
+                    UI -> SW: ACT: onIntervalTimeoutVitals
+                    SW -> SW: ACT: Record cached Trend Data as new entry
+                    SW -> UI: CMD: Display new Trend Data entry
+                    SW -> SW: ACT: Clear Cached Data
+                end
+            else rejected
+                TD -> SW: MSG: [x64: Rsp 0]\nVitals Response
+                SW -> UI: CMD: Vitals Request Adjustment Triggered
+                UI -> US: ACT: Manual Vitals Pop-up
+                US -> UI: TCH: Enter Manual Vitals Measurement
+                UI -> SW: ACT: onManualVitals
+                SW -> SW: ACT: Record Trend Data entry
+                SW -> UI: CMD: Display new Trend Data entry
+                SW -> SW: ACT: Clear Cached Data
+            end
+        end
+    end
+
+    == Clearing Trends Data and Trends History ==
+    TD -> SW: MSG: [0x12: Data]\nTD OpMode
+    SW -> UI: Not InTreatment
+    UI -> SW: doClearData
+    SW -> SW: Clear Trends Data and History
+
+@enduml