Re-colour Signal Lines based on Connected Instrument Colour Ruleset
- Last UpdatedApr 24, 2026
- 3 minute read
There are two methods of using the Colouring Utility to set signal lines to the same colour as defined by the colouring rulesets of the instruments they are connected to. For example:
Method 1: Modify the behaviour of the Colouring Routine for Instrument Rules
Add the following to the list of user-defined directives in the Miscellaneous - Settings Sub-Category of the AVEVA P&ID Project Administration program:
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USER_COLOURSIGNALWITHINST
Set the directive to 'Yes' (default is 'No').
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USER_COLOURSIGNALWITHINST=YES
The colouring routine will then colour signal lines in accordance with the rules of the instruments they are connected to. For example:
Before colouring routine is run:
After colouring routine is run:
Method 2: Create a Signal Line Dataset and Rule
Using this method, you can set up a rule in the Colouring Utility that defines how signal lines are coloured. In other words, you can set up a rule which colours signal lines in the same way as the instruments they are connected to.
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In the Symbols Category of the AVEVA P&ID Project Administration program, add a SIGNALLINE row as follows:
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In the User Defined Attributes - DataSet Sub-Category, add a SIGNALLINE dataset as follows:
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Select a signal line to edit the properties as setup in the SIGNALLINE dataset:
Note: Signal line property editing is available only for users that have installed the AutoCAD VBA extension available at the Autodesk website.
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In the Colouring Utility, create a new rule for signal lines. Signal style attributes and other attributes defined for the SIGNALLINE dataset will be available for selection:
See Add a Rule for further information on setting up rules.
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The colouring routine will now colour signal lines based on attribute conditions set at the rule.
For example, see the list of attributes and list of values set here:
A signal line processed according to the rule will be coloured as shown here:
