Draw Signal Lines

The facilities of the Signal Line group of the Home tab. is used to draw signal lines. A basic set of signal lines is provided which complies with Instrument Society of America (I.S.A.) standards. The style, thickness and colour of signal lines are project definable.

To add or edit signal line styles, use the Signal Styles Configuration Category of the AVEVA P&ID Project Administration program.

The default set consists of the following signal lines:

• Electrical Signal

• Pneumatic Signal

• Hydraulic Signal

• Undefined Signal

• Capillary Tube

• Electromagnetic or Sonic Signal

• Internal System Link (Software or Data Link)

The procedure for drawing signal lines is very similar to that for drawing pipes or process links. The signal line is drawn in the currently selected signal line style. Each section of line, from turning point to the next, is one entity. All signal lines refresh their blocks when an item is inserted, or the signal line is stretched.

The Signal Line group also includes an option which can be used to change the style of existing signal lines, refer to Change Signal Line Styles.

The following facilities are also provided to help in drawing pipes and process links:

• Signal lines can be manually broken, refer to Break Lines.

• Signal lines may be merged into a single pipe/branch, refer to Merge Pipes, Branches and Signal Lines.

• Signal lines may be split into two separate signal lines, refer to Split Pipes and Signal Lines.

• The flow of a signal line may be reversed, refer to Reverse Pipe and Signal Line Flows.

• Signal line segments may be added, merged, deleted, and automatically added to extend the pipe to a newly inserted symbol, refer to Add Pipe and Signal Line Segments, Add Pipe Segments from any Point, Merge Pipe Segments, Delete Pipe and Signal Line Segments and Add Symbols and Extend Pipes to them.

• The length of a signal line may be changed, refer to Change the Length of Lines.

• Elbows may be added to a signal line, refer to Add Elbows to a Line.