{"schemaVersion":1,"slug":"microgrid-communication-degraded-mode-indication","name":"Microgrid communication-degraded mode indication","kind":"symbol","abbreviation":"MCMI","aliases":["Microgrid supervisory and communication interfaces","microgrids Microgrid supervisory and communication interfaces","microgrids","Microgrids","Required communication health","Degraded-control state"],"category":"microgrid-systems","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"Reports the defined restricted control state used when assigned communications are degraded.","description":["Reports the defined restricted control state used when assigned communications are degraded. 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 “Required communication health” at the input and “Degraded-control state” at the output. Local resource fallback must be specified.","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: Required communication health. Identify its source device or document and the state represented on the drawing.","Follow the named output: Degraded-control state. Cross-reference its destination and separate the command from confirmation that the equipment responded.","Local resource fallback must be specified.","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 required communication health.","Identify the destination and defined state of degraded-control state.","Record the equipment or control-document revision supporting this functional block.","Check this application limit in the project design: Local resource fallback must be specified."],"distinction":"Local resource fallback must be specified. 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":"Required communication health"},{"label":"Output / connection","value":"Degraded-control state"},{"label":"Lookup label","value":"MCMI 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-resource-data-model-mapping-boundary"],"artwork":"pi26-microgrid-communication-degraded-mode-indication","publishedOn":"2026-11-03","updatedOn":"2026-11-03","provenance":"independent-public-research","representation":{"type":"functional-block","focus":"microgrids","family":"microgrid-monitoring","input":"Required communication health","output":"Degraded-control state"},"plainEnglish":{"title":"What this block does","introduction":"Reports the defined restricted control state used when assigned communications are degraded.","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 “Required communication health” at the input and “Degraded-control state” at the output. Local resource fallback must be specified.","drawings":"Start at the named input: Required communication health. Identify its source device or document and the state represented on the drawing. Follow the named output: Degraded-control state. Cross-reference its destination and separate the command from confirmation that the equipment responded.","terms":[{"name":"Input","meaning":"Required communication health"},{"name":"Output","meaning":"Degraded-control state"},{"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":["Required communication health","MCMI","Degraded-control state"],"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-communication-degraded-mode-indication","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/microgrid-communication-degraded-mode-indication.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."}]}