Marek Frniak
0075362f92
- Added Underload measurement state - Detect underload responses from Mettler Toledo scales - Automatically zero the scale after underload detection - Restart mass measurement after successful zeroing - Prevent zeroing response from being used as a valid measurement - Preserve measurement stability by clearing buffered readings after underload
102 lines
2.7 KiB
C#
102 lines
2.7 KiB
C#
///
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/// Copyright (c) 2013-2020 Sensus Slovensko a.s.
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///
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using System;
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using log4net;
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namespace TBF.Rig.MettlerToledo.Standard
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{
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public class ZeroOp : IOperation
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{
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private static readonly ILog log = LogManager.GetLogger(typeof(ZeroOp));
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public override string ToString() { return string.Format("ZeroOp(.,.)"); }
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bool done;
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/// Set by the constructor
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BalanceDev scale;
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bool activityStarted;
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/// <summary>
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/// Events: BalanceDone, Error
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/// </summary>
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/// <param name="scale">Balance device instance</param>
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/// <param name="result">Reference to variable for 'tara' in kg</param>
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public ZeroOp(BalanceDev scale)
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{
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if (scale == null) throw new ArgumentNullException("balanceDev");
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this.scale = scale;
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log.Debug(this.ToString());
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}
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/// <summary>Start this operation</summary>
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public void Start()
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{
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log.DebugFormat("{0} - ZeroOp - Start()", scale.Name);
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done = false;
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if (scale.Activity == Activity.Idle)
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{
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scale.SendZeroWhenStableCmd();
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activityStarted = true;
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scale.Activity = Activity.RunningOperation;
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}
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else
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{
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activityStarted = false;
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}
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}
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/// <summary>Run this operation</summary>
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/// <returns>
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/// Event.None
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/// Event.BalanceDone
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/// Event.Error . . . . . Current.Tick == null
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/// </returns>
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public Event Run()
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{
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if (!activityStarted && scale.Activity == Activity.Idle)
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{
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scale.SendZeroWhenStableCmd();
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activityStarted = true;
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scale.Activity = Activity.RunningOperation;
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return Event.Busy;
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}
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if (done) return Event.ScaleDone; /// Zeroing has been done already
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if (scale.MsrmntState == MsrmntState.Busy) return Event.Busy;
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if (scale.MsrmntState == MsrmntState.Underload)
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{
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done = true;
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return Event.ScaleUnderload;
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}
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if (scale.MsrmntState == MsrmntState.Overload)
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{
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done = true;
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return Event.ScaleOverload;
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}
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if (scale.MsrmntState == MsrmntState.Valid)
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{
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done = true;
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return Event.ScaleDone; /// Zeroing completed
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}
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scale.SendZeroWhenStableCmd(); /// Failed -> repeat zeroing
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return Event.Busy;
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}
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/// <summary>Stop this operation</summary>
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public void Stop()
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{
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if (scale.MsrmntState == MsrmntState.Busy) scale.MsrmntState = MsrmntState.Failed;
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scale.Activity = Activity.Idle;
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log.DebugFormat("{0} - ZeroOp - Stop()", scale.Name);
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}
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}
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}
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