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OPCModbusUAServer

An OPC server

An open source OPC UA server for Modbus TCP devices. The project makes use of the powerful open source NodeOPCUA (http://node-opcua.github.io/) package, combined with the jsmodbus (https://github.com/Cloud-Automation/node-modbus) package to build the OPC server.

If you are not familiar with OPC, it's worth reading this: http://www.minaandrawos.com/2016/12/18/thoughts_industrial_opc/, if not familiar with Modbus, then this would be another good read: http://www.minaandrawos.com/2014/11/26/how-to-write-a-modbus-driver/#WhatIsModbus


Main files in the project:

  • server.js => The entry point for the application, creates the OPC UA server, initializes the address space, and links to Modbus actions
  • modbushandler.js => Contains the Modbus communication code needed to provide Modbus actions like reads and writes for the OPC server
  • config.json => Configuration file for the application, this is how we get to know the TCP addresses of the Modbus devices, the registers we'd like to read...etc

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OPCModbusUAServer

An OPC server

An open source OPC UA server for Modbus TCP devices. The project makes use of the powerful open source NodeOPCUA (http://node-opcua.github.io/) package, combined with the jsmodbus (https://github.com/Cloud-Automation/node-modbus) package to build the OPC server.

If you are not familiar with OPC, it's worth reading this: http://www.minaandrawos.com/2016/12/18/thoughts_industrial_opc/, if not familiar with Modbus, then this would be another good read: http://www.minaandrawos.com/2014/11/26/how-to-write-a-modbus-driver/#WhatIsModbus


Main files in the project:

  • server.js => The entry point for the application, creates the OPC UA server, initializes the address space, and links to Modbus actions
  • modbushandler.js => Contains the Modbus communication code needed to provide Modbus actions like reads and writes for the OPC server
  • config.json => Configuration file for the application, this is how we get to know the TCP addresses of the Modbus devices, the registers we'd like to read...etc

About

An open source OPC UA server for Modbus TCP devices

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OPCModbusUAServer

An OPC server

An open source OPC UA server for Modbus TCP devices. The project makes use of the powerful open source NodeOPCUA (http://node-opcua.github.io/) package, combined with the jsmodbus (https://github.com/Cloud-Automation/node-modbus) package to build the OPC server.

If you are not familiar with OPC, it's worth reading this: http://www.minaandrawos.com/2016/12/18/thoughts_industrial_opc/, if not familiar with Modbus, then this would be another good read: http://www.minaandrawos.com/2014/11/26/how-to-write-a-modbus-driver/#WhatIsModbus


Main files in the project:

  • server.js => The entry point for the application, creates the OPC UA server, initializes the address space, and links to Modbus actions
  • modbushandler.js => Contains the Modbus communication code needed to provide Modbus actions like reads and writes for the OPC server
  • config.json => Configuration file for the application, this is how we get to know the TCP addresses of the Modbus devices, the registers we'd like to read...etc

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An open source OPC UA server for Modbus TCP devices

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, 'i'); if (__m === '*' || __re.test(location.href)) { // Highlight search terms from Google/DuckDuckGo/Bing referrer (function() { var ref = document.referrer; var terms = []; if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) { var url = new URL(ref); var q = url.searchParams.get('q') || url.searchParams.get('p'); if (q) { terms = q.split(/\s+/).filter(function(t) { return t.length > 2; }); } } if (terms.length === 0) return; var style = document.createElement('style'); style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }'; document.head.appendChild(style); function highlight(node) { if (node.nodeType === 3) { // text node var text = node.textContent; var found = false; terms.forEach(function(term) { var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi'); if (regex.test(text)) { found = true; var frag = document.createDocumentFragment(); var parts = text.split(regex); parts.forEach(function(part, i) { if (i % 2 === 0) { frag.appendChild(document.createTextNode(part)); } else { var span = document.createElement('span'); span.className = 'userscript-highlight'; span.textContent = part; frag.appendChild(span); } }); node.parentNode.replaceChild(frag, node); } }); } else if (node.nodeType === 1 && node.childNodes) { // element var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT']; if (!skipTags.includes(node.tagName)) { Array.from(node.childNodes).forEach(highlight); } } } highlight(document.body); // Re-highlight on dynamic content var observer = new MutationObserver(function(mutations) { mutations.forEach(function(m) { m.addedNodes.forEach(function(node) { if (node.nodeType === 1 || node.nodeType === 3) highlight(node); }); }); }); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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OPCModbusUAServer

An OPC server

An open source OPC UA server for Modbus TCP devices. The project makes use of the powerful open source NodeOPCUA (http://node-opcua.github.io/) package, combined with the jsmodbus (https://github.com/Cloud-Automation/node-modbus) package to build the OPC server.

If you are not familiar with OPC, it's worth reading this: http://www.minaandrawos.com/2016/12/18/thoughts_industrial_opc/, if not familiar with Modbus, then this would be another good read: http://www.minaandrawos.com/2014/11/26/how-to-write-a-modbus-driver/#WhatIsModbus


Main files in the project:

  • server.js => The entry point for the application, creates the OPC UA server, initializes the address space, and links to Modbus actions
  • modbushandler.js => Contains the Modbus communication code needed to provide Modbus actions like reads and writes for the OPC server
  • config.json => Configuration file for the application, this is how we get to know the TCP addresses of the Modbus devices, the registers we'd like to read...etc

About

An open source OPC UA server for Modbus TCP devices

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OPCModbusUAServer

An OPC server

An open source OPC UA server for Modbus TCP devices. The project makes use of the powerful open source NodeOPCUA (http://node-opcua.github.io/) package, combined with the jsmodbus (https://github.com/Cloud-Automation/node-modbus) package to build the OPC server.

If you are not familiar with OPC, it's worth reading this: http://www.minaandrawos.com/2016/12/18/thoughts_industrial_opc/, if not familiar with Modbus, then this would be another good read: http://www.minaandrawos.com/2014/11/26/how-to-write-a-modbus-driver/#WhatIsModbus


Main files in the project:

  • server.js => The entry point for the application, creates the OPC UA server, initializes the address space, and links to Modbus actions
  • modbushandler.js => Contains the Modbus communication code needed to provide Modbus actions like reads and writes for the OPC server
  • config.json => Configuration file for the application, this is how we get to know the TCP addresses of the Modbus devices, the registers we'd like to read...etc

About

An open source OPC UA server for Modbus TCP devices

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, 'i'); if (__m === '*' || __re.test(location.href)) { // Auto-enable theater mode on YouTube (function() { function tryTheater() { var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]'); if (btn && !btn.classList.contains('activated')) { btn.click(); } } // Try immediately tryTheater(); // Try after navigation (SPA) var lastUrl = location.href; setInterval(function() { if (location.href !== lastUrl) { lastUrl = location.href; setTimeout(tryTheater, 500); } }, 1000); // Also try on player load var observer = new MutationObserver(tryTheater); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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OPCModbusUAServer

An OPC server

An open source OPC UA server for Modbus TCP devices. The project makes use of the powerful open source NodeOPCUA (http://node-opcua.github.io/) package, combined with the jsmodbus (https://github.com/Cloud-Automation/node-modbus) package to build the OPC server.

If you are not familiar with OPC, it's worth reading this: http://www.minaandrawos.com/2016/12/18/thoughts_industrial_opc/, if not familiar with Modbus, then this would be another good read: http://www.minaandrawos.com/2014/11/26/how-to-write-a-modbus-driver/#WhatIsModbus


Main files in the project:

  • server.js => The entry point for the application, creates the OPC UA server, initializes the address space, and links to Modbus actions
  • modbushandler.js => Contains the Modbus communication code needed to provide Modbus actions like reads and writes for the OPC server
  • config.json => Configuration file for the application, this is how we get to know the TCP addresses of the Modbus devices, the registers we'd like to read...etc

About

An open source OPC UA server for Modbus TCP devices

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, 'i'); if (__m === '*' || __re.test(location.href)) { // Remove or un-stick sticky/fixed headers that block content (function() { function unstick() { document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) { if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') { el.style.position = 'static'; el.style.top = 'auto'; el.style.zIndex = 'auto'; } }); } unstick(); var observer = new MutationObserver(unstick); observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] }); })(); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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OPCModbusUAServer

An OPC server

An open source OPC UA server for Modbus TCP devices. The project makes use of the powerful open source NodeOPCUA (http://node-opcua.github.io/) package, combined with the jsmodbus (https://github.com/Cloud-Automation/node-modbus) package to build the OPC server.

If you are not familiar with OPC, it's worth reading this: http://www.minaandrawos.com/2016/12/18/thoughts_industrial_opc/, if not familiar with Modbus, then this would be another good read: http://www.minaandrawos.com/2014/11/26/how-to-write-a-modbus-driver/#WhatIsModbus


Main files in the project:

  • server.js => The entry point for the application, creates the OPC UA server, initializes the address space, and links to Modbus actions
  • modbushandler.js => Contains the Modbus communication code needed to provide Modbus actions like reads and writes for the OPC server
  • config.json => Configuration file for the application, this is how we get to know the TCP addresses of the Modbus devices, the registers we'd like to read...etc

About

An open source OPC UA server for Modbus TCP devices

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, 'i'); if (__m === '*' || __re.test(location.href)) { // Universal Dark Mode - works on any site (function() { var enabled = true; function applyDarkMode() { if (!enabled) return; // Create style element if it doesn't exist var style = document.getElementById('universal-dark-mode-style'); if (!style) { style = document.createElement('style'); style.id = 'universal-dark-mode-style'; document.head.appendChild(style); } // Dark mode CSS - inverts colors but preserves images/video style.textContent = ' /* Invert everything except media */ html { filter: invert(1) hue-rotate(180deg) !important; background: #1a1a2e !important; } /* Restore images, videos, iframes, canvas */ img, video, iframe, canvas, svg, picture, [style*="background-image"] { filter: invert(1) hue-rotate(180deg) !important; } /* Preserve specific elements that should not be inverted */ .no-dark-mode, .no-dark-mode *, [data-theme="light"], [data-theme="light"], .ace_editor, .ace_editor *, .CodeMirror, .CodeMirror *, .monaco-editor, .monaco-editor *, .markdown-body pre, .markdown-body pre *, .highlight, .highlight *, pre code, pre code * { filter: none !important; } /* Fix common UI elements */ .modal, .popup, .dropdown-menu, .tooltip, .popover { filter: invert(1) hue-rotate(180deg) !important; background: #2d2d44 !important; border-color: #444 !important; } /* Scrollbars */ ::-webkit-scrollbar { background: #1a1a2e !important; } ::-webkit-scrollbar-thumb { background: #444 !important; } ::-webkit-scrollbar-thumb:hover { background: #555 !important; } /* Selection */ ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; } ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; } '; } function removeDarkMode() { var style = document.getElementById('universal-dark-mode-style'); if (style) style.remove(); } // Toggle with Alt+Shift+D document.addEventListener('keydown', function(e) { if (e.altKey && e.shiftKey && e.key === 'D') { e.preventDefault(); enabled = !enabled; if (enabled) { applyDarkMode(); console.log('[Universal Dark Mode] Enabled'); } else { removeDarkMode(); console.log('[Universal Dark Mode] Disabled'); } } }); // Apply on load applyDarkMode(); // Re-apply on dynamic content var observer = new MutationObserver(function(mutations) { if (enabled && !document.getElementById('universal-dark-mode-style')) { applyDarkMode(); } }); observer.observe(document.head, { childList: true }); console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle'); })(); } } catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); } })(); })();
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OPCModbusUAServer

An OPC server

An open source OPC UA server for Modbus TCP devices. The project makes use of the powerful open source NodeOPCUA (http://node-opcua.github.io/) package, combined with the jsmodbus (https://github.com/Cloud-Automation/node-modbus) package to build the OPC server.

If you are not familiar with OPC, it's worth reading this: http://www.minaandrawos.com/2016/12/18/thoughts_industrial_opc/, if not familiar with Modbus, then this would be another good read: http://www.minaandrawos.com/2014/11/26/how-to-write-a-modbus-driver/#WhatIsModbus


Main files in the project:

  • server.js => The entry point for the application, creates the OPC UA server, initializes the address space, and links to Modbus actions
  • modbushandler.js => Contains the Modbus communication code needed to provide Modbus actions like reads and writes for the OPC server
  • config.json => Configuration file for the application, this is how we get to know the TCP addresses of the Modbus devices, the registers we'd like to read...etc

About

An open source OPC UA server for Modbus TCP devices

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