{"schemaVersion":1,"slug":"microgrid-site-controller-watchdog-interface","name":"Microgrid site-controller watchdog interface","kind":"symbol","abbreviation":"MSWI","aliases":["Microgrid supervisory and communication interfaces","microgrids Microgrid supervisory and communication interfaces","microgrids","Microgrids","Controller watchdog output","Site-controller fault indication"],"category":"microgrid-systems","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"Transfers the controller's declared self-health output to independent supervision.","description":["Transfers the controller's declared self-health output to independent supervision. Microgrid supervision coordinates measurements, control authority and resource communication without replacing local protection. Each resource value needs a named measurement boundary, freshness condition and intended control use.","In a microgrid control room, the operator can see source availability, active constraints and current operating mode. A communication failure should remain distinguishable from an electrical resource failure. For this reference, the drawing identifies “Controller watchdog output” at the input and “Site-controller fault indication” at the output. Watchdog coverage has defined limits.","Identify signal ownership, quality flags, control priority and loss-of-data behavior. These functional references do not certify cyber security, closed-loop performance or equipment interoperability. The functional block is an independent explanation of this named application. Equipment-specific ratings, terminal connections and operating conditions must be established in the project documentation."],"readingNotes":["Start at the named input: Controller watchdog output. Identify its source device or document and the state represented on the drawing.","Follow the named output: Site-controller fault indication. Cross-reference its destination and separate the command from confirmation that the equipment responded.","Watchdog coverage has defined limits.","Identify signal ownership, quality flags, control priority and loss-of-data behavior. These functional references do not certify cyber security, closed-loop performance or equipment interoperability."],"drawingChecklist":["Label the source and connection reference for controller watchdog output.","Identify the destination and defined state of site-controller fault indication.","Record the equipment or control-document revision supporting this functional block.","Check this application limit in the project design: Watchdog coverage has defined limits."],"distinction":"Watchdog coverage has defined limits. This reference describes the named application; it does not establish a new IEC graphical symbol, an ANSI device-function number or an exact manufacturer connection diagram.","facts":[{"label":"Representation","value":"Functional block"},{"label":"Installation focus","value":"Microgrids"},{"label":"Input / boundary","value":"Controller watchdog output"},{"label":"Output / connection","value":"Site-controller fault indication"},{"label":"Lookup label","value":"MSWI is a library lookup label, not a standard device designation."}],"references":[{"sourceId":"pi26-mg-power","relevance":"Public technical context for microgrid supervisory and communication interfaces. Active and reactive power, generation, load control, operating reserves and system supervision. The application text and educational graphic are independently authored; the publisher does not certify this representation."}],"related":["microgrid-controller","sequence-of-events-recorder","microgrid-standby-controller-ownership-interface"],"artwork":"pi26-microgrid-site-controller-watchdog-interface","publishedOn":"2026-11-03","updatedOn":"2026-11-03","provenance":"independent-public-research","representation":{"type":"functional-block","focus":"microgrids","family":"microgrid-monitoring","input":"Controller watchdog output","output":"Site-controller fault indication"},"plainEnglish":{"title":"What this block does","introduction":"Transfers the controller's declared self-health output to independent supervision.","example":"In a microgrid control room, the operator can see source availability, active constraints and current operating mode. A communication failure should remain distinguishable from an electrical resource failure. For this reference, the drawing identifies “Controller watchdog output” at the input and “Site-controller fault indication” at the output. Watchdog coverage has defined limits.","drawings":"Start at the named input: Controller watchdog output. Identify its source device or document and the state represented on the drawing. Follow the named output: Site-controller fault indication. Cross-reference its destination and separate the command from confirmation that the equipment responded.","terms":[{"name":"Input","meaning":"Controller watchdog output"},{"name":"Output","meaning":"Site-controller fault indication"},{"name":"Application reference","meaning":"An explanation of a named drawing function or circuit relationship; the project documents define the equipment and its connections."}],"diagram":"flow","steps":["Controller watchdog output","MSWI","Site-controller fault indication"],"caption":"A reading guide. The entry's original illustration and input/output facts describe this application.","sources":[{"label":"Microgrid control systems","url":"https://selinc.com/services/microgrids-power-management/microgrid-control-systems/"}],"profileId":"power-installation-microgrid-monitoring"},"url":"https://eloragrid.ai/symbols/microgrid-site-controller-watchdog-interface","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/microgrid-site-controller-watchdog-interface.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"pi26-mg-power","publisher":"SEL","title":"Microgrid control systems","url":"https://selinc.com/services/microgrids-power-management/microgrid-control-systems/","scope":"Active and reactive power, generation, load control, operating reserves and system supervision.","type":"manufacturer","checkedOn":"2026-11-03","reuse":"link-only","relevance":"Public technical context for microgrid supervisory and communication interfaces. Active and reactive power, generation, load control, operating reserves and system supervision. The application text and educational graphic are independently authored; the publisher does not certify this representation."}]}