PLC I/O
PLC input / output
A controller interface point connecting field signals to an identified module channel.
Schematic
Protection functions · 77
Telemetering device
Transmits a measured quantity from its local measurement point to a remote indication or monitoring system.
SLD / Schematic · 77
What it represents
Transmits a measured quantity from its local measurement point to a remote indication or monitoring system.
In a drafting package, connect this reference to the measured signal, scaling and transmission interface. The associated drawing should trace the remote receiver and monitoring point reference; the number identifies the role and does not specify the terminal arrangement, ratings or operating settings.
This designation is useful when reading machine and legacy control drawings. Retain the documented function on an existing drawing and consult the original equipment manual before assigning it to a new design.
How to read it
- Identify the measured signal, scaling and transmission interface.
- Trace the remote receiver and monitoring point reference.
Information to show or reference
- Label the measured signal, scaling and transmission interface.
- Cross-reference the remote receiver and monitoring point reference.
- Identify the device tag, manual revision and logic drawing that define this implementation.
A distinction that matters
Telemetering transfers measurement information; device 16 describes the communications device rather than the measurement role.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
SecoGear medium-voltage switchgear application and technical guide, DET-882
Public manufacturer number/name association. Drafting explanations are independently written.
IEEE C37.2-2022: power-system device function numbers
Normative device-number publication; exact edition wording and compliance require the licensed standard.
About this graphic
This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.
SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.
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