https://forge.codesys.com/forge/talk/Engineering/thread/0dadc4d518/2024-06-11T07:57:52.043000ZRecent posts to Deleting the trend recording history2024-06-11T07:57:52.043000Z2024-06-11T07:57:52.043000Zcaprez95https://forge.codesys.com/u/caprez95/https://forge.codesys.comb51f2b9eaa555945567681ea01cdd28d61b148a7

<div class="markdown_content"><p>Hallo</p> <p>Ich möchte eine laufende Trendaufzeichnung stoppen, den Inhalt löschen und Trend-Diagramm auf 0 zurücksetzen.</p> <p>Laut Codesys soll das mit dem folgenden Code möglich sein:</p> <div class="codehilite"><pre><span></span><code><span class="n">You</span><span class="w"> </span><span class="n">can</span><span class="w"> </span><span class="n">insert</span><span class="w"> </span><span class="n">an</span><span class="w"> </span><span class="n">input</span><span class="w"> </span><span class="n">element</span><span class="w"> </span><span class="ow">in</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">visualization</span><span class="w"> </span><span class="n">which</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">operator</span><span class="w"> </span><span class="n">can</span><span class="w"> </span><span class="n">use</span><span class="w"> </span><span class="n">to</span><span class="w"> </span><span class="n">delete</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">previous</span><span class="w"> </span><span class="n">value</span><span class="w"> </span><span class="n">recording</span><span class="w"> </span><span class="ow">in</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">trend</span><span class="w"> </span><span class="n">visualization</span><span class="w"> </span><span class="n">at</span><span class="w"> </span><span class="n">runtime</span><span class="o">.</span><span class="w"> </span><span class="n">The</span><span class="w"> </span><span class="n">curve</span><span class="w"> </span><span class="n">displayed</span><span class="w"> </span><span class="n">until</span><span class="w"> </span><span class="n">then</span><span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="n">removed</span><span class="w"> </span><span class="ow">and</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">display</span><span class="w"> </span><span class="n">starts</span><span class="w"> </span><span class="n">over</span><span class="o">.</span> <span class="n">In</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">application</span><span class="w"> </span><span class="p">(</span><span class="n">example</span><span class="p">:</span><span class="w"> </span><span class="ow">in</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">program</span><span class="w"> </span><span class="n">PLC_PRG</span><span class="p">),</span><span class="w"> </span><span class="n">implement</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">following</span><span class="w"> </span><span class="n">code</span><span class="p">:</span> <span class="n">itfTrendRecording</span><span class="w"> </span><span class="p">:</span><span class="w"> </span><span class="n">ITrendRecording</span><span class="p">;</span> <span class="n">itfTrendStorageWriter</span><span class="w"> </span><span class="p">:</span><span class="w"> </span><span class="n">ITrendStorageWriter</span><span class="p">;</span> <span class="n">itfTrendStorageWriter3</span><span class="w"> </span><span class="p">:</span><span class="w"> </span><span class="n">ITrendStorageWriter3</span><span class="p">;</span> <span class="n">sTrendRecordingName</span><span class="w"> </span><span class="p">:</span><span class="w"> </span><span class="n">STRING</span><span class="w"> </span><span class="p">:</span><span class="o">=</span><span class="w"> </span><span class="s1">'TrendRecording'</span><span class="p">;</span> <span class="n">itfTrendRecording</span><span class="w"> </span><span class="p">:</span><span class="o">=</span><span class="w"> </span><span class="n">GlobalInstances</span><span class="o">.</span><span class="n">g_TrendRecordingManager</span><span class="o">.</span><span class="n">FindTrendRecording</span><span class="p">(</span><span class="n">ADR</span><span class="p">(</span><span class="n">sTrendRecordingName</span><span class="p">));</span> <span class="n">xClearHistoryTrend</span><span class="p">:</span><span class="w"> </span><span class="n">BOOL</span><span class="p">;</span> <span class="n">IF</span><span class="w"> </span><span class="n">xClearHistoryTrend</span><span class="w"> </span><span class="n">THEN</span> <span class="n">itfTrendRecording</span><span class="w"> </span><span class="p">:</span><span class="o">=</span><span class="w"> </span><span class="n">GlobalInstances</span><span class="o">.</span><span class="n">g_TrendRecordingManager</span><span class="o">.</span><span class="n">FindTrendRecording</span><span class="p">(</span><span class="n">ADR</span><span class="p">(</span><span class="n">sTrendRecordingName</span><span class="p">));</span> <span class="n">IF</span><span class="w"> </span><span class="n">itfTrendRecording</span><span class="w"> </span><span class="o">&lt;&gt;</span><span class="w"> </span><span class="mi">0</span><span class="w"> </span><span class="n">THEN</span> <span class="w"> </span><span class="n">itfTrendStorageWriter</span><span class="w"> </span><span class="p">:</span><span class="o">=</span><span class="w"> </span><span class="n">itfTrendRecording</span><span class="o">.</span><span class="n">GetTrendStorageWriter</span><span class="p">();</span> <span class="w"> </span><span class="n">IF</span><span class="w"> </span><span class="n">__QUERYINTERFACE</span><span class="p">(</span><span class="n">itfTrendStorageWriter</span><span class="p">,</span><span class="w"> </span><span class="n">itfTrendStorageWriter3</span><span class="p">)</span><span class="w"> </span><span class="n">THEN</span><span class="w"> </span><span class="n">itfTrendStorageWriter3</span><span class="o">.</span><span class="n">ClearHistory</span><span class="p">();</span> <span class="w"> </span><span class="n">END_IF</span> <span class="n">END_IF</span> <span class="n">In</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">visualization</span><span class="w"> </span><span class="n">of</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">trend</span><span class="w"> </span><span class="n">recording</span><span class="p">,</span><span class="w"> </span><span class="n">add</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="n">button</span><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="n">deleting</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">previous</span><span class="w"> </span><span class="n">curve</span><span class="o">.</span><span class="w"> </span><span class="n">Configure</span><span class="w"> </span><span class="n">its</span><span class="w"> </span><span class="n">Toggle</span><span class="w"> </span><span class="n">property</span><span class="w"> </span><span class="n">with</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">variable</span><span class="w"> </span><span class="n">PLC_PRG</span><span class="o">.</span><span class="n">xClearHistoryTrend</span><span class="o">.</span> <span class="err">⇒</span><span class="w"> </span><span class="n">When</span><span class="w"> </span><span class="n">xClearHistoryTrend</span><span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="n">set</span><span class="w"> </span><span class="n">to</span><span class="w"> </span><span class="n">TRUE</span><span class="p">,</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="n">previously</span><span class="w"> </span><span class="n">recorded</span><span class="w"> </span><span class="n">curve</span><span class="w"> </span><span class="k">is</span><span class="w"> </span><span class="n">deleted</span><span class="o">.</span><span class="w"> </span><span class="n">The</span><span class="w"> </span><span class="n">recording</span><span class="w"> </span><span class="n">immediately</span><span class="w"> </span><span class="n">starts</span><span class="w"> </span><span class="n">again</span><span class="o">.</span> </code></pre></div> <p>Dies löscht auch die Daten vom Trend, aber das Diagramm wird nicht auf 0 zurückgesetzt, sondern läuft einfach da weiter wo man gestoppt hat.</p> <p>Braucht es für den Diagramm-Reset noch einen zusätzlichen Befehl?</p> <p>Gruss</p></div>