Remote Terminal Unit (RTU)
System Analysis
Normal Behavior
Continuously samples analog voltages, pressures, temperatures, and switch contacts at remote substations or pipelines, transmitting periodic telemetry and sequence-of-events timestamped records to the SCADA master.
Failure Behavior
Transmits spurious contact chattering causing alarm floods, freezes analog telemetry values at stale readings, loses telemetry radio lock, or reboots during electrical substation surges.
Business Consequence
RTU communication loss blinds grid operators to substation breaker states, preventing remote isolation during electrical faults and risking widespread regional power outages.
Visual Manifestation
"SCADA dispatcher screens flashing amber with 'COMMUNICATION TIMEOUT - SUBSTATION 14', and field technicians dispatched with rugged laptops to investigate dead radio links."
Satirical Behavior
"A hardened steel box operating continuously in a desert substation since 1994, whose sole weakness is that someone configured an alarm deadband of 0.001%, generating 800,000 email alerts every time the wind blows."
Known Aliases
Technical Terminology
Failure Indicators
System Architecture (Graph)
Affected Systems
- scada systemCONNECTED TO
- remote terminal unitINTERACTS WITH
FAQ
How does it normally behave?
Continuously samples analog voltages, pressures, temperatures, and switch contacts at remote substations or pipelines, transmitting periodic telemetry and sequence-of-events timestamped records to the SCADA master.
How does it fail?
Transmits spurious contact chattering causing alarm floods, freezes analog telemetry values at stale readings, loses telemetry radio lock, or reboots during electrical substation surges.
What is the business consequence?
RTU communication loss blinds grid operators to substation breaker states, preventing remote isolation during electrical faults and risking widespread regional power outages.
What is a Remote Terminal Unit (RTU)?
A ruggedized industrial computing device deployed at remote field sites (such as electrical substations and pumping stations) to convert physical sensor readings into digital telemetry for SCADA systems.
How does an RTU differ from a PLC?
While PLCs are optimized for high-speed deterministic control in localized plant environments, RTUs are specialized for harsh, wide-area remote telemetry over low-bandwidth or intermittent communication links.
Explore the system
AI Summary
Remote Terminal Unit (RTU) is a INDUSTRIAL_CONTROL system in TinyCTO.tv. Continuously samples analog voltages, pressures, temperatures, and switch contacts at remote substations or pipelines, transmitting periodic telemetry and sequence-of-events timestamped records to the SCADA master.