7. Events Setup

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<li><a href="#s-intro">1. Introduction</a>

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<p>Overview of the Events tool — purpose, capabilities, and key concepts.</p></li>

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<li><a href="#s-events">2. CENTO Events</a>

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<p>Event editor, creating and editing events via UI or Excel, and flashing on diagrams.</p></li>

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<li><a href="#s-notifications">3. Notifications Settings</a>

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<p>Configuring email notifications, filter logic, and notification delivery examples.</p></li>

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<li><a href="#s-sound-editor">4. Sound Editor</a>

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<p>Uploading and managing .mp3 sound files for event alerts.</p></li>

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<li><a href="#s-examples">5. Examples of Event Setup</a>

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<p>Practical examples: events on tag value change and device status change.</p></li>

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<li><a href="#s-annex">Appendix: Formula Reference</a>

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<p>Variables and operators available in event condition formulas.</p></li>

</ul>

<h2 id="s-intro">1. Introduction<a class="anchor-icon" href="javascript:void(0)" onclick="copyAnchor('s-intro')" title="Copy link"><svg width="12" height="12" viewBox="0 0 16 16" fill="currentColor"><path d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"/></svg></a></h2>

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<p>CENTO is a multifunctional software platform for data collection, processing, and display. This manual describes the <strong>Events</strong> user tool in CENTO.</p>

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<p>It is assumed that the user is already familiar with the basic elements of the CENTO interface after reading the User Manual.</p>

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<p>Events in CENTO are designed to increase the observability of system operation by tracking changes in the system status and process equipment, logging events, and notifying users. Events help personnel react in a timely manner to changes in the technological process and system operation. To achieve these goals, CENTO provides user notification and acknowledgement features alongside event logging.</p>

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<h2 id="s-events">2. CENTO Events<a class="anchor-icon" href="javascript:void(0)" onclick="copyAnchor('s-events')" title="Copy link"><svg width="12" height="12" viewBox="0 0 16 16" fill="currentColor"><path d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"/></svg></a></h2>

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<h3 id="s-event-editor">2.1. Event editor<a class="anchor-icon" href="javascript:void(0)" onclick="copyAnchor('s-event-editor')" title="Copy link"><svg width="12" height="12" viewBox="0 0 16 16" fill="currentColor"><path d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"/></svg></a></h3>

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<p>To open the <strong>Event editor</strong>, select from the main menu: <strong>Settings → Events → Event editor</strong>.</p>

<p class="fig-cap">Figure 2.1. Event editor in the CENTO menu</p>

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</div>

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<p>Figure 2.2 shows the <strong>Event editor</strong> interface.</p>

<p class="fig-cap">Figure 2.2. Event editor</p>

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</div>

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<p>The <strong>Event editor</strong> page provides the following capabilities:</p>

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<ol>

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<li>Add a new event to the system <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2021.29.51.png" alt="Add event"/></li>

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<li>Activate <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2021.30.26.png" alt="Activate"/> or disable <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2021.30.54.png" alt="Disable"/> selected events</li>

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<li>Edit <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2021.32.53.png" alt="Edit"/>, copy <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2021.33.40.png" alt="Copy"/>, and delete <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2021.34.05.png" alt="Delete"/> in the <strong>Actions</strong> column</li>

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<li>Delete any number of events at once <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2021.35.15.png" alt="Delete selected"/></li>

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<li>Edit the number of records displayed</li>

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<li>Search for events by filtering <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2021.36.03.png" alt="Filter"/> (the filter is located to the right of the table headings)</li>

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<li>Edit event configuration <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2021.36.56.png" alt="Edit configuration"/></li>

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<li>Adjust setpoint text <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2021.37.32.png" alt="Adjust setpoint text"/></li>

</ol>

<h3 id="s-event-create">2.2. Creating and editing an event in the web interface<a class="anchor-icon" href="javascript:void(0)" onclick="copyAnchor('s-event-create')" title="Copy link"><svg width="12" height="12" viewBox="0 0 16 16" fill="currentColor"><path d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"/></svg></a></h3>

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<p>An event can be created manually or automatically. Events are automatically created when the setpoint parameter is enabled. For a detailed description, refer to the Setup Manual.</p>

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<p>The text of setpoints can be edited in the <strong>Event editor</strong> interface. Click the button <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2021.38.47.png" alt="Adjust setpoint text"/>. The <strong>Setpoint editing</strong> window opens (Figure 2.3), where the wording of setpoints for Triggering and/or Return can be modified, including Upper/Lower warning limit, Upper/Lower alarm limit, and Upper/Lower physical limit.</p>

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<p>One or more variables can be specified in the setpoint triggering message:</p>

<ul>

<li><code>{{.tag_code_or_id}}</code> — tag code, or ID if the code is empty</li>

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<li><code>{{.tag_limit}}</code> — setpoint value</li>

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<li><code>{{.tag_unit}}</code> — tag units</li>

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<li><code>{{.device_name}}</code> — name of the device the tag is linked to</li>

</ul>

<div class="note note-warning"><div class="note-hd"><span>⚠</span> Important</div><div class="note-body">If curly braces or dots are missing when writing these parameters, a validation error will occur. If a non-existent parameter is entered (e.g. <code>{{.tag_name_2}}</code>), the Operating Journal will receive an event of the form: <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2021.39.52.png" alt="error icon"/> <strong><no value> > 10</strong>.</div></div>

<p class="fig-cap">Figure 2.3. Setpoint editing page</p>

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</div>

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<p>To create a new event, click the button <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2021.41.09.png" alt="Add new event"/>. Only an authorized user with appropriate rights can create and edit events.</p>

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<p>Figure 2.4 shows the event creation page.</p>

<p class="fig-cap">Figure 2.4. Event editor: creation page</p>

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</div>

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<p>The <strong>Event editor</strong> window contains the following fields:</p>

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<ul>

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<li><strong>Identifier</strong> — the sequence number of the event (filled in automatically); can be changed if needed.</li>

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<li><strong>Name</strong> — the name of the event.</li>

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<li><strong>Object</strong> — an object from the CENTO Information Model (IM) to which the event refers. The IM object is selected from a drop-down tree.</li>

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<li><strong>Device</strong> — the device to which the event refers, selected from the drop-down device tree.</li>

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<li><strong>Event type</strong> — switches the event type between “Single” and “With return” <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2021.42.53.png" alt="Event type switch"/>.</li>

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<li><strong>Tags</strong> — the ID of the telemetering tag to which the event belongs.</li>

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<li><strong>Message</strong> — the message text output when the event is triggered.</li>

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<li><strong>Formula</strong> — the condition for the event to be triggered. Click <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2021.43.51.png" alt="Formula list"/> to open the list of available formulas (see Appendix).</li>

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<li><strong>Dead time (ms)</strong> — delay time in milliseconds before the event is generated. Helps prevent false events caused by intermittent communication failures.</li>

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<li><strong>Type</strong> — a drop-down list for the importance or category of the event.</li>

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<li><strong>Acknowledgement</strong> — a switch to enable user acknowledgement of event notification.</li>

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<li><strong>Sound</strong> — selects a sound for notification from those loaded in the Sound Editor (see section 4). The selected sound can be previewed using the button <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2021.44.31.png" alt="Play sound"/> to the right of the “Sound” field.</li>

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<li><strong>Before acknowledgement</strong> — a switch to play the selected sound until the event is acknowledged.</li>

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<li><strong>Sound repeats</strong> — number of repetitions of sound playback when the event occurs.</li>

</ul>

<div class="note note-warning"><div class="note-hd"><span>⚠</span> Important</div><div class="note-body"><strong>Modern browsers block sound playback by default.</strong> To allow CENTO to play sounds in Chrome:<ol style='margin:6px 0 0 0;padding-left:18px;'><li>Left-click to the left of the address bar (Figure 2.5) and select <strong>Site settings</strong>.</li><li>Go to <strong>Privacy and security → Site settings → Additional permissions → Sound</strong> and select <strong>Allow</strong> (Figure 2.6).</li><li>Refresh the CENTO page.</li></ol></div></div>

<p class="fig-cap">Figure 2.5. Site settings — opening permissions</p>

</div>

<p class="fig-cap">Figure 2.6. Allowing sound playback for the site</p>

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</div>

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<p>After filling in all required fields, click <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2021.48.55.png" alt="Save"/> and update the configuration (Figure 2.7).</p>

<p class="fig-cap">Figure 2.7. Update configuration</p>

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</div>

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<div class="note note-info"><div class="note-hd"><span>ℹ</span> Note</div><div class="note-body">There are two event types in CENTO: <strong>Single</strong> and <strong>With return</strong>. Events with return are used for important persistent states (e.g. “Ground fault in isolated-neutral network”). The <em>opening event</em> reports the state start; the <em>closing event</em> reports its end. <strong>Events with return must always be paired</strong> — the second event always closes the first. Active (unclosed) events are shown in a separate tab of the operational log.</div></div>

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<p>When <strong>With return</strong> is selected as the event type, the Event editor displays additional fields with the heading <strong>With return</strong> (Figure 2.8). These fields are identical to those for the Single event type.</p>

<p class="fig-cap">Figure 2.8. Event editor with “With return” type</p>

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</div>

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<h3 id="s-event-excel">2.3. Creating and editing events using Excel<a class="anchor-icon" href="javascript:void(0)" onclick="copyAnchor('s-event-excel')" title="Copy link"><svg width="12" height="12" viewBox="0 0 16 16" fill="currentColor"><path d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"/></svg></a></h3>

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<p>Events can be configured using Excel files. This function is available at <strong>Settings → Configuration Files</strong> (Figure 2.9).</p>

<p class="fig-cap">Figure 2.9. Import/Export configuration file page</p>

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</div>

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<p>To configure events, download the <code>events.xlsx</code> file by clicking <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2021.51.37.png" alt="Download"/>, then fill in the appropriate cells in a new row in the <strong>Events</strong> tab (Figure 2.10).</p>

<p class="fig-cap">Figure 2.10. Events tab in events.xlsx</p>

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</div>

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<p>Fill in the following columns to create an event:</p>

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<ul>

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<li><strong>Event ID</strong> — unique event number. Must not duplicate existing IDs in the system.</li>

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<li><strong>Name</strong> — event name.</li>

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<li><strong>Event type</strong> — <code>one_position</code> or <code>two_position</code>.</li>

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<li><strong>Event status</strong> — <code>1</code> = enabled, <code>0</code> = disabled.</li>

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<li><strong>Device ID</strong> — device identifier the event refers to.</li>

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<li><strong>Device</strong> — auto-generated when downloading; shows the device path for debugging. Do not fill in manually.</li>

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<li><strong>Object ID</strong> — IM object identifier the event refers to.</li>

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<li><strong>Object</strong> — auto-generated when downloading; shows the object path for debugging. Do not fill in manually.</li>

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<li><strong>Tags</strong> — tag (parameter) ID the event refers to.</li>

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<li><strong>Formula</strong> — condition for triggering the event (see Appendix).</li>

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<li><strong>Dead time, ms</strong> — delay time in milliseconds before event generation.</li>

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<li><strong>Event type code</strong> — code from the <strong>Event type</strong> directory in the separate tab of this file.</li>

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<li><strong>Event type name</strong> — filled in automatically when uploading/downloading.</li>

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<li><strong>Message</strong> — message text displayed in logs when the event is triggered.</li>

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<li><strong>Acknowledgement</strong> — <code>True</code> = enabled, <code>False</code> = disabled.</li>

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<li><strong>Sound ID</strong> — ID of a sound file loaded through the Sound Editor.</li>

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<li><strong>Sound name</strong> — filled in automatically when uploading/downloading.</li>

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<li><strong>Repeat count</strong> — number of sound repetitions when the event is triggered.</li>

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<li><strong>Infinity repeat</strong> — <code>True</code> = repeat until acknowledged, <code>False</code> = use repeat count.</li>

</ul>

<p>After filling in all required fields, upload the file using the <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2021.53.38.png" alt="Upload"/> button on the Import/Export configuration file page (Figure 2.9). In the dialog (Figure 2.11), select the filled-in <code>events.xlsx</code>. The system will automatically validate the file (Figure 2.12).</p>

<p class="fig-cap">Figure 2.11. Upload configuration file window</p>

</div>

<p class="fig-cap">Figure 2.12. Validating the configuration file</p>

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</div>

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<p>If errors are detected, they will be displayed in the upload window. After all errors are corrected, the <strong>Write configuration</strong> button becomes available. After uploading, refresh the configuration to apply changes (see Figure 2.7).</p>

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<div class="note note-info"><div class="note-hd"><span>ℹ</span> Note</div><div class="note-body">For <strong>partial editing</strong>, CENTO also allows downloading and uploading only a filtered subset of events. In the Event editor, filter for the events of interest using <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2021.55.29.png" alt="Filter"/>, then click <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2021.55.55.png" alt="Config"/> and select <strong>Download</strong>. The downloaded <code>events.xlsx</code> will contain only the filtered events. To upload changes, click the same button and select <strong>Upload</strong>. Events not included in the download will remain unchanged.</div></div>

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<div class="note note-warning"><div class="note-hd"><span>⚠</span> Important</div><div class="note-body">Partial upload/download is <strong>not compatible</strong> with Excel files downloaded using an earlier version of the service. Attempting to upload an old file will result in a “Version incompatibility” error. When adding a new event, the new Event ID must not match any existing ID in the system.</div></div>

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<h3 id="s-event-flash">2.4. Flashing on the diagram<a class="anchor-icon" href="javascript:void(0)" onclick="copyAnchor('s-event-flash')" title="Copy link"><svg width="12" height="12" viewBox="0 0 16 16" fill="currentColor"><path d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"/></svg></a></h3>

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<p>An object on a mimic diagram can be configured to flash (blink) when an event is active. There are two methods:</p>

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<h4>Method 1: Flashing by tag</h4>

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<p>Use this method if the information model is not configured or not planned. Steps:</p>

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<ol>

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<li>

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<strong>Set up an event</strong> with the triggering formula, for example, connection loss

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(<code>ti40027171 != 1</code>) or restoration (<code>ti40027171 == 1</code>) — any tag

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registered in the system can be used (Figure 2.13).

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</li>

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<li>

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<strong>Create a calculated tag</strong> with the formula <code>[devstatusNN]</code> where

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NN is the device ID (Figure 2.14). The tag to be used for the designated purpose may get

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its value from a real device or may be based on other tags.

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</li>

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<li>

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<strong>Set up an object on the diagram</strong>, referencing the calculated tag from step 2

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in its rules (Figure 2.15).

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</li>

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<li>

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After saving the diagram and updating the configuration, if the status of the NN device

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changes, the system will start flashing the bound diagram object until it is acknowledged.

</li>

</ol>

<p class="fig-cap">Figure 2.13. Event configured for tag-based flashing</p>

</div>

<p class="fig-cap">Figure 2.14. Calculated tag for diagram flashing</p>

</div>

<p class="fig-cap">Figure 2.15. Diagram object rules referencing the calculated tag</p>

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</div>

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<h4>Method 2: Flashing by information model object</h4>

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<p>For this method, the information model must be configured and the required IM object must be selected in the event's <strong>Object</strong> field. The diagram object must be <em>active</em> (see the Diagrams Development Manual) and bound to the same IM object. Steps:</p>

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<ol>

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<li><strong>Create an event</strong> with the IM object selected in the <strong>Object</strong> field (Figure 2.16).</li>

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<li><strong>Create an active diagram object</strong> bound to the same IM object (Figure 2.17).</li>

</ol>

<p class="fig-cap">Figure 2.16. Creating an event with an information model object</p>

</div>

<p class="fig-cap">Figure 2.17. Diagram object bound to the information model</p>

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</div>

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<h2 id="s-notifications">3. Notifications Settings<a class="anchor-icon" href="javascript:void(0)" onclick="copyAnchor('s-notifications')" title="Copy link"><svg width="12" height="12" viewBox="0 0 16 16" fill="currentColor"><path d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"/></svg></a></h2>

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<h3 id="s-notif-create">3.1. Creating and editing notifications<a class="anchor-icon" href="javascript:void(0)" onclick="copyAnchor('s-notif-create')" title="Copy link"><svg width="12" height="12" viewBox="0 0 16 16" fill="currentColor"><path d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"/></svg></a></h3>

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<p>CENTO can notify users about triggered events via email. To configure notifications, go to <strong>Settings → Events → Notifications</strong>. Mail server configuration is described in the Setup Manual, Mail Servers.</p>

<p class="fig-cap">Figure 3.1. Notifications interface</p>

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</div>

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<p>The notification table contains the following columns:</p>

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<ol>

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<li><strong>Name</strong> — notification name.</li>

364

<li><strong>Emails</strong> — email addresses configured to receive notifications.</li>

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<li><strong>Dispatch period</strong> — the time of day allowed for sending notifications.</li>

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<li><strong>Iteration period</strong> — minimum time interval between notifications (notifications cannot be sent more frequently than this period).</li>

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<li><strong>Operation threshold</strong> — number of event triggers required before a notification is sent.</li>

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<li><strong>State</strong> — on/off.</li>

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<li><strong>Actions</strong> — edit <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2022.05.05.png" alt="Edit"/>, copy <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2022.05.32.png" alt="Copy"/>, delete <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2022.05.55.png" alt="Delete"/>.</li>

</ol>

<p>To create a new notification, click <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2022.06.27.png" alt="Create notification"/>. Only an authorized user with appropriate permissions can create and edit notifications.</p>

<p class="fig-cap">Figure 3.2. Notifications: creation page</p>

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</div>

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<p>Fill in the following fields in the <strong>Notification settings</strong> tab:</p>

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<ul>

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<li><strong>Name</strong> — notification name.</li>

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<li><strong>State</strong> — enables or disables the notification.</li>

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<li><strong>Operation threshold</strong> — number of event triggers required before a notification is sent.</li>

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<li><strong>Dispatch period</strong> — the time of day allowed for sending notifications.</li>

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<li><strong>Iteration period</strong> — minimum time interval between notifications.</li>

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<li><strong>Delay (s)</strong> — accumulation window starting from the first event before the notification is sent.</li>

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<li><strong>E-mail server</strong> — mail server for sending notifications (configured in Settings → Email servers).</li>

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<li><strong>Recipients</strong> — email addresses of notification recipients.</li>

</ul>

<p>In the <strong>Event selection</strong> tab (Figure 3.3), tick the events required for notification in the left column and click <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2022.08.29.png" alt="Move right"/> to move them to the right column. To remove events, mark them in the right column and click <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2022.08.55.png" alt="Move left"/>.</p>

<p class="fig-cap">Figure 3.3. Event selection tab</p>

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</div>

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<p>After filling in all fields, click <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2022.09.48.png" alt="Save"/> and update the configuration.</p>

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<h3 id="s-notif-logic">3.2. Notification operation<a class="anchor-icon" href="javascript:void(0)" onclick="copyAnchor('s-notif-logic')" title="Copy link"><svg width="12" height="12" viewBox="0 0 16 16" fill="currentColor"><path d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"/></svg></a></h3>

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<p>There are three filter types that control when notifications are sent:</p>

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<ol>

406

<li><strong>Operation threshold</strong></li>

407

<li><strong>Iteration period</strong></li>

408

<li><strong>Dispatch period</strong></li>

</ol>

<p>When configured without any restrictions, a notification is sent whenever any of the configured events is triggered.</p>

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<h4>Operation threshold</h4>

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<p>A notification is triggered when the total number of triggered events in the notification reaches the configured threshold. If the threshold is 0, the notification is generated immediately after any event triggers, provided the other filters allow it.</p>

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<h4>Iteration period</h4>

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<p>The iteration period starts from the time the last notification was triggered. It is set in days and hours. If set to 0 days 0 hours, notifications are generated and sent immediately when the other filter conditions are met.</p>

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<h4>Dispatch period</h4>

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<p>If set to 0:00–24:00, notifications can be sent at any time of day. If set to a specific time (e.g. 8:00), notifications are batched and sent once at that time. The dispatch period can only be set within a single calendar day.</p>

<p class="fig-cap">Figure 3.4. Logic of filter settings when generating notifications</p>

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</div>

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<h4>Changing notification settings</h4>

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<p>When notification settings are changed at any time:</p>

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<ul>

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<li>The <strong>operation threshold counter</strong> is preserved but the notification will not trigger until the next event after the threshold is reached.</li>

436

<li>The <strong>iteration period</strong> is reset.</li>

</ul>

<p>Examples:</p>

<ol>

<li>Threshold = 5, 3 events triggered. User increases threshold to 10 → notification fires after 7 more events (total 10).</li>

443

<li>Threshold = 10, 7 events triggered. User reduces threshold to 5 → notification fires after the next event (total 8 triggered events).</li>

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<li>Iteration period = 10 hours, last notification sent 2 hours ago. Settings changed → iteration period resets and notification fires on the next event trigger.</li>

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<li>Threshold = 10, notification has 3 events, event #1 triggered twice. User deletes event #1 from notification. When total reaches 10, notification is sent without event #1’s messages.</li>

</ol>

<p class="fig-cap">Figure 3.5. Notification with operation threshold</p>

</div>

<p class="fig-cap">Figure 3.6. Notification with dispatch period</p>

</div>

<p class="fig-cap">Figure 3.7. Notification with all restrictions active</p>

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</div>

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<h2 id="s-sound-editor">4. Sound Editor<a class="anchor-icon" href="javascript:void(0)" onclick="copyAnchor('s-sound-editor')" title="Copy link"><svg width="12" height="12" viewBox="0 0 16 16" fill="currentColor"><path d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"/></svg></a></h2>

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<p>Sound notifications are managed at <strong>Settings → Events → Sound editor</strong>.</p>

<p class="fig-cap">Figure 4.1. Sound Editor page</p>

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</div>

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<p>The Sound Editor shows a table with the following columns: <strong>ID</strong>, <strong>Name</strong>, <strong>File name</strong>, <strong>Uploaded</strong> (date), and <strong>Actions</strong> (edit, play, delete).</p>

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<div class="note note-info"><div class="note-hd"><span>ℹ</span> Note</div><div class="note-body">The Sound Editor only supports <strong>.mp3</strong> files.</div></div>

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<p>To add a new sound, click <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2022.14.32.png" alt="Add new sound"/>. In the pop-up (Figure 4.2), specify the name, select or drag-and-drop the .mp3 file, and click <img class="inline-icon" src="https://wiki.centosoftware.com/xwiki/bin/download/CENTO%20Manuals/6.%20Events%20Setup/WebHome/Screenshot%202025-12-10%20at%2022.15.48.png" alt="Upload"/>.</p>

<p class="fig-cap">Figure 4.2. New sound upload window</p>

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</div>

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<div class="note note-warning"><div class="note-hd"><span>⚠</span> Important</div><div class="note-body">If CENTO is open in multiple browser tabs (e.g. Sound Editor in one tab, a mimic diagram in another), the old sound will continue to play on the diagram tab after changing the sound in the editor. The new sound will play only after the user interacts with the diagram tab (e.g. clicking the mouse).</div></div>

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<h2 id="s-examples">5. Examples of Event Setup<a class="anchor-icon" href="javascript:void(0)" onclick="copyAnchor('s-examples')" title="Copy link"><svg width="12" height="12" viewBox="0 0 16 16" fill="currentColor"><path d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"/></svg></a></h2>

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<p>The following examples use the web interface on the event creation page described in section 2.2.</p>

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<h4>Example 1: Event on tag value change</h4>

<p class="fig-cap">Figure 5.1. Event setup on tag value change</p>

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</div>

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<p>Figure 5.1 shows the event <em>Switch position f.1.1 (1QF1)</em> configured as a one-position event bound to an IM object and a device. The formula <code>ti11013008 == 2</code> triggers the event when tag 11013008 equals 2. Dead time is 0 (no delay), acknowledgement is enabled, and the default sound plays 5 times.</p>

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<h4>Example 2: Event on device status change (with return)</h4>

<p class="fig-cap">Figure 5.2. Event setup on device status change</p>

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</div>

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<p>Figure 5.2 shows a paired event with return. Two notifications are configured:</p>

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<ol>

508

<li>

509

<strong>Lost connection with Mikrotik SW1.2</strong> — formula

510

<code>(devstatus100 == 3) AND (devprevstatus100 != 3)</code>, meaning device ID 100

511

just entered error status. Dead time = 3000 ms; alarm type with acknowledgement;

512

sound plays until acknowledged.

513

</li>

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<li>

515

<strong>Restored connection with Mikrotik SW1.2</strong> — formula

516

<code>(devstatus100 == 1) AND (devprevstatus100 != 1)</code>, meaning device ID 100

517

just returned to normal status. Informational type; no acknowledgement required;

sound plays 3 times.

</li>

</ol>

<h2 id="s-annex">Appendix: Formula Reference<a class="anchor-icon" href="javascript:void(0)" onclick="copyAnchor('s-annex')" title="Copy link"><svg width="12" height="12" viewBox="0 0 16 16" fill="currentColor"><path d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"/></svg></a></h2>

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<p>Formulas can include arithmetic operations, conditions, mathematical and special functions, and pre-calculated measurements (up to three levels of nesting).</p>

<caption style="text-align:left;font-size:.8em;color:#555;padding:6px 0;font-weight:700;">Table A.1 — Variables in formulas</caption>

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<thead>

531

<tr>

532

<th style="min-width:160px;">Variable</th>

<th>Description</th>

</tr>

</thead>

<tbody>

<tr><td><code>[tiN]</code></td><td>Current value of tag with ID N</td></tr>

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<tr><td><code>[prevN]</code></td><td>Previous value of the tag with ID N</td></tr>

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<tr><td><code>[statusN]</code></td><td>Current status of tag with ID N</td></tr>

540

<tr><td><code>[prevstatusN]</code></td><td>Previous status of tag with ID N</td></tr>

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<tr><td><code>[lasttimeN]</code></td><td>Current timestamp of the tag with ID N</td></tr>

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<tr><td><code>[beforetimeN]</code></td><td>Previous timestamp of the tag with ID N</td></tr>

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<tr><td><code>[devstatusN]</code></td><td>Current device status: 0 = disabled; 1 = normal; 2 = at least one TI with abnormal quality; 3 = polling error (unavailable); 4 = manual input; 7 = waiting for data</td></tr>

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<tr><td><code>[devprevstatusN]</code><br><code>[prevdevstatusN]</code></td><td>Previous device status (same status codes as above)</td></tr>

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<tr><td><code>[devlastdtN]</code></td><td>Time when the latest device data was received</td></tr>

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<tr><td><code>[devpingtimeN]</code></td><td>Response time (ms) to ICMP ping of device N</td></tr>

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<tr><td><code>[connectedN]</code></td><td>Connection with device N restored</td></tr>

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<tr><td><code>[!connectedN]</code></td><td>Connection with device N is lost</td></tr>

</tbody>

</table>

</div>

<caption style="text-align:left;font-size:.8em;color:#555;padding:6px 0;font-weight:700;">Table A.2 — Operators in formulas</caption>

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<thead>

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<tr>

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<th style="min-width:80px;">Operator</th>

<th>Description</th>

<th>Example</th>

<th>Result</th>

</tr>

</thead>

<tbody>

<tr><td><code>+</code></td><td>Addition</td><td><code>5 + 5</code></td><td>10</td></tr>

567

<tr><td><code>-</code></td><td>Subtraction</td><td><code>5 - 3</code></td><td>2</td></tr>

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<tr><td><code>*</code></td><td>Multiplication</td><td><code>0.01 * [val]</code></td><td>0.01 × val</td></tr>

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<tr><td><code>/</code></td><td>Division</td><td><code>[val] / 1000</code></td><td>val / 1000</td></tr>

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<tr><td><code>%</code></td><td>Modulo (remainder)</td><td><code>10 % 3</code></td><td>1</td></tr>

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<tr><td><code>=</code></td><td>Assigns a value to a tag</td><td><code>[ti123] = 5</code></td><td>5</td></tr>

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<tr><td><code>==</code></td><td>Equal (returns true/false)</td><td><code>2 == 2</code></td><td>true</td></tr>

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<tr><td><code><, >, <=, >=</code></td><td>Arithmetic comparison</td><td><code>2 >= 3</code></td><td>false</td></tr>

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<tr><td><code>&&</code>, <code>&</code>, <code>AND</code>, <code>and</code></td><td>Logical AND</td><td><code>(devstatus1==1) AND (devstatus2==1)</code></td><td>true if both</td></tr>

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<tr><td><code>||</code>, <code>|</code>, <code>OR</code>, <code>or</code></td><td>Logical OR</td><td><code>(devstatus1==3) OR (devstatus2==3)</code></td><td>true if either</td></tr>

</tbody>

</table>

</div>

<div class="parent-topic">Parent topic: <a href="[[CENTO Manuals>>doc:CENTO Manuals.WebHome]]">CENTO Manuals</a></div>

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583

</div>

</div>

<li class="tl1"><a href="#s-intro" data-toc>1. Introduction</a></li>

592

<li class="tl1"><a href="#s-events" data-toc>2. CENTO Events</a></li>

593

<li class="tl2"><a href="#s-event-editor" data-toc>2.1. Event editor</a></li>

594

<li class="tl2"><a href="#s-event-create" data-toc>2.2. Creating events (UI)</a></li>

595

<li class="tl2"><a href="#s-event-excel" data-toc>2.3. Creating events (Excel)</a></li>

596

<li class="tl2"><a href="#s-event-flash" data-toc>2.4. Flashing on diagram</a></li>

597

<li class="tl1"><a href="#s-notifications" data-toc>3. Notifications</a></li>

598

<li class="tl2"><a href="#s-notif-create" data-toc>3.1. Creating notifications</a></li>

599

<li class="tl2"><a href="#s-notif-logic" data-toc>3.2. Notification logic</a></li>

600

<li class="tl1"><a href="#s-sound-editor" data-toc>4. Sound Editor</a></li>

601

<li class="tl1"><a href="#s-examples" data-toc>5. Examples</a></li>

602

<li class="tl1"><a href="#s-annex" data-toc>Appendix: Formulas</a></li>

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