# Station RTU command-authority gate

Canonical URL: https://eloragrid.ai/symbols/station-rtu-command-authority-gate
Publisher: Elora Grid
Updated: 2026-11-03
Lookup label: SRCG
Drawing use: Schematic
Reference families: Manufacturer

Representation: Functional block
Installation focus: substations
Input: Remote command and authority
Output: Authorized station command

Accepts the documented remote commands only when the station authority conditions permit them.

## In plain English

### What this block does

Accepts the documented remote commands only when the station authority conditions permit them.

### A simple example

In a substation control building, the station controller receives bay information and forwards an operator's selected command to the correct bay device. Device feedback confirms whether the intended result actually occurred. For this reference, the drawing identifies “Remote command and authority” at the input and “Authorized station command” at the output. Authority does not remove equipment operating interlocks.

### What the drawings help you do

Start at the named input: Remote command and authority. Identify its source device or document and the state represented on the drawing. Follow the named output: Authorized station command. Cross-reference its destination and separate the command from confirmation that the equipment responded.

### Terms

- Input: Remote command and authority
- Output: Authorized station command
- Application reference: An explanation of a named drawing function or circuit relationship; the project documents define the equipment and its connections.

Concept diagram: Remote command and authority → SRCG → Authorized station command
A reading guide. The entry's original illustration and input/output facts describe this application.

- [SEL-2411 programmable automation controller](https://selinc.com/products/2411/)


## What it represents

Accepts the documented remote commands only when the station authority conditions permit them. Station automation collects measurements and statuses and issues assigned commands through defined authority paths. A communicated point has a value, quality and equipment identity; it should not be treated as an unexplained contact.
In a substation control building, the station controller receives bay information and forwards an operator's selected command to the correct bay device. Device feedback confirms whether the intended result actually occurred. For this reference, the drawing identifies “Remote command and authority” at the input and “Authorized station command” at the output. Authority does not remove equipment operating interlocks.
Document the point mapping, source, destination, command authority and failure behavior. A communication interface block explains information flow and does not certify network security or control-system availability. 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.

## How to read it

- Start at the named input: Remote command and authority. Identify its source device or document and the state represented on the drawing.
- Follow the named output: Authorized station command. Cross-reference its destination and separate the command from confirmation that the equipment responded.
- Authority does not remove equipment operating interlocks.
- Document the point mapping, source, destination, command authority and failure behavior. A communication interface block explains information flow and does not certify network security or control-system availability.

## Information to show or reference

- Label the source and connection reference for remote command and authority.
- Identify the destination and defined state of authorized station command.
- Record the equipment or control-document revision supporting this functional block.
- Check this application limit in the project design: Authority does not remove equipment operating interlocks.

## Important distinction

Authority does not remove equipment operating interlocks. 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

- Representation: Functional block
- Installation focus: Substations
- Input / boundary: Remote command and authority
- Output / connection: Authorized station command
- Lookup label: SRCG is a library lookup label, not a standard device designation.

## Public references

- [SEL-2411 programmable automation controller](https://selinc.com/products/2411/) — SEL. Public technical context for substation automation and command interfaces. Station I/O, alarms, event recording, command and communications interfaces. The application text and educational graphic are independently authored; the publisher does not certify this representation.

## Graphic scope

Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.