DCS shared display symbol
Also called Shared display, DCS function
A shared display function lives in the distributed control system (DCS) and is shown to the operator on a screen shared with many other loops.
What the DCS shared display symbol means
A shared display function lives in the distributed control system (DCS) and is shown to the operator on a screen shared with many other loops.
How it is drawn
A circle inside a square. A line through the middle means it is available to the operator in the control room.
The DCS shared display symbol in each standard
Drawn as ISA 5.1 defines it, as on most US and international legends.
ISO 10628-2 does not cover instruments. On ISO-based P&IDs they are drawn as IEC 62424 PCE requests, or to ISA 5.1 on many international projects.
German (DIN): Funktion im Prozessleitsystem. See DIN P&ID symbols.
Where you see it on a P&ID
For most indicators and controllers on a modern plant.
Tag codes
The DCS shared display is commonly tagged:
- FIC
- PIC
- LI
Tag formats follow the project numbering procedure. For instruments, the letters follow ISA 5.1, explained on the instrument symbols page.
Related symbols
Frequently asked questions
What does the DCS shared display symbol look like on a P&ID?
A circle inside a square. A line through the middle means it is available to the operator in the control room.
What is a DCS shared display used for?
A shared display function lives in the distributed control system (DCS) and is shown to the operator on a screen shared with many other loops. You will find it for most indicators and controllers on a modern plant.
What tag does a DCS shared display have?
It is commonly tagged FIC, PIC, LI. The exact tag format comes from the project numbering procedure and the legend sheets.
Is the DCS shared display symbol the same in ISA and ISO?
ISO 10628-2 does not cover instruments. On ISO-based P&IDs they are drawn as IEC 62424 PCE requests, or to ISA 5.1 on many international projects. Companies vary the details, so always check the legend sheets at the front of the P&ID set.
What is the DCS shared display called in German?
Funktion im Prozessleitsystem. On a German R&I-Fließschema it is drawn to DIN EN ISO 10628-2 and DIN EN 62424.
- In production since 2014
- Thousands of daily users
- On MODEC FPSO projects since 2016