https://forge.codesys.com/forge/talk/Engineering/thread/c3fad35ed1/2022-07-19T16:13:10.395000ZRecent posts to Codesys ST CASE statement2022-07-19T16:13:10.395000Z2022-07-19T16:13:10.395000Ztimvhhttps://forge.codesys.com/u/timvh/https://forge.codesys.com12c99a529966207baaa8befe0c372b79306183ef

<div class="markdown_content"><p>When timestamp_hist = 0</p></div>

2022-07-19T12:52:49.023000Z2022-07-19T12:52:49.023000Zdamian177https://forge.codesys.com/u/damian177/https://forge.codesys.come0166da4edc57e3b66eb8feeea9e5c11c40e3fec

<div class="markdown_content"><p>Hi,</p> <p>Below I paste one of step CASE statement</p> <div class="codehilite"><pre><span></span> <span class="nt">21</span><span class="o">:</span> <span class="o">(*</span><span class="nt">check</span> <span class="nt">number</span> <span class="nt">phone</span> <span class="nt">sender</span><span class="s1">'a*) (*check if sms is not too old*)</span> <span class="s1"> timestamp_hist_hi := time_sys.udiLocal_DateAndTime + timestamp_hist;</span> <span class="s1"> timestamp_hist_lo := time_sys.udiLocal_DateAndTime - timestamp_hist;</span> <span class="s1"> IF (smsrec.sNumber = '</span><span class="nt">XXXXXXXXXXX</span><span class="s1">' OR smsrec.sNumber = '</span><span class="nt">XXXXXXXXXXX</span><span class="err">'</span><span class="o">)</span> <span class="nt">AND</span> <span class="o">(</span><span class="nt">DT_TO_UDINT</span><span class="o">(</span><span class="nt">smsrec</span><span class="p">.</span><span class="nc">dtSend</span><span class="o">)</span> <span class="o">&gt;</span> <span class="nt">timestamp_hist_lo</span><span class="o">)</span> <span class="nt">AND</span> <span class="o">(</span><span class="nt">DT_TO_UDINT</span><span class="o">(</span><span class="nt">smsrec</span><span class="p">.</span><span class="nc">dtSend</span><span class="o">)</span> <span class="o">&lt;</span> <span class="nt">timestamp_hist_hi</span><span class="o">)</span> <span class="nt">THEN</span> <span class="nt">iState</span><span class="o">:=</span> <span class="nt">23</span><span class="o">;</span> <span class="nt">ELSE</span> <span class="nt">iState</span><span class="o">:=</span> <span class="nt">100</span><span class="o">;</span> <span class="nt">END_IF</span><span class="o">;</span> </pre></div> <p>Teh variable <strong>timestamp_his</strong>t equal 300sec.</p> <p>How it is possible that time to time the variables <strong>timestamp_hist_hi</strong> and <strong>timestamp_hist_lo</strong> are the same ?</p></div>