Siemens COMOS User Manual

Entering the calculation formula
There are two ways to enter a calculation formula:
●
Via the "Define catalog access" window
The window helps you to define a correct calculation formula. The software generates a
calculation formula from the user inputs and writes it to the geometry attribute automatically.
See chapter Using the "Define catalog access" window (Page 31).
● Manually
3.5.2.3 Using the "Define catalog access" window
In the "Define catalog access" window, define the calculation formula for selected attributes.
See also chapter Entering the calculation formula (Page 30).
Procedure
To define the calculation formula using "Define catalog access", proceed as follows:
1. Open the base object properties for pipe part catalogs.
2. To open the "Define catalog access" window, press the "F2" button in an attribute that fulfills
the following conditions:
– Is placed on the "3D geometry" tab or one of the "Connector <1-n>" tabs.
– The "3D" value is selected on the "Link" tab in the "Mode" list in the properties of the
attribute.
3. Select the calculation formula in the "Function" field.
4. Define the parameters of the calculation formula.
See also chapter Overview of the calculation formulae (Page 32).
You can find detailed information about the calculation formulae in the following chapters:
– Using the "CatStd(...)" function (Page 32)
– Using the "Cat(...)" function (Page 35)
– Using the "Cat2(...)" function (Page 36)
– Using the "S(...)" function (Page 36)
– Using the "ElmS(...)" function (Page 37)
– Using the "CatPC(...)" function (Page 38)
– Using the "CatExt(...)" function (Page 38)
– "Def(...)" function (Page 39)
5. Save your entries.
Preparing for creation and maintenance of pipe specs
3.5 Administering pipe part catalogs
PipeSpec Designer
Operating Manual, 09/2014, A5E32076948-AA 31

Siemens COMOS Specifications

General

Manufacturer	Siemens
Description	COMOS is plant engineering software for the process industry. It manages plant projects and documentation. It covers the entire plant lifecycle from engineering and design to operation and maintenance.
Functionality	Plant design and engineering
Integration	Integrates with Siemens TIA Portal, SIMATIC PCS 7, and other third-party systems
Data Management	Centralized data management
Modules	Includes modules for process engineering, electrical engineering, instrumentation, and automation
Collaboration	Supports multi-disciplinary team collaboration with role-based access
Documentation	Automated generation of documentation (e.g., P&IDs, loop diagrams, instrument lists), document management, version control.
Customization	Highly customizable to meet specific project requirements and industry standards. Allows for scripting and API integration.
Industry Standards	ISO, IEC