Siemens COMOS User Manual

3.5.2.4 Overview of the calculation formulae
"CatStd(...)" The value is taken from the standard catalog. It is determined based on the nominal
diameter parameter.
"Cat(...)" The value is taken from the local dimensions defined at the pipe part. It is determined
based on the nominal diameter parameter.
"Cat2(...)" The value is taken from a pipe part table you specify. It is determined based on a
parameter you define.
"S(...)" The value of the pipe part attribute you specify is applied to the geometry attribute.
"ElmS(...)" Like "S()", but the attribute comes from an element of the pipe part.
"CatExt(...)" The value is taken from a pipe part table you specify. It is determined based on the
nominal diameter parameter.
"CatPC(...)" The value is taken from the local dimensions defined in the pipe spec. It is determined
based on the nominal diameter parameter.
"Def(...)" Sets a default value that is used as the starting value in the engineering data.
3.5.2.5 Using the "CatStd(...)" function
The function expects the parameters 1-3. Optional: Parameter 4.
See also chapter
Using the "Define catalog access" window (Page 31).
Every component of the first element is either made up of a fixed value or a variable. For every
object under the "standard geometry tables" node, COMOS evaluates which value the attribute
"Y00T00055.Y00A00027 Parameter name" has, and compiles the calculation formula from
this.
An element of the calculation formula is marked as a variable value depending on the value
in the attribute "Parameter name":
● Value of "Parameter name" is equal to "- - -":
The name of the object is added to the formula (fixed value).
● Value of "Parameter name" is not equal to "- - -":
The name of the attribute corresponding to the entry set in "Parameter name" is added to
the formula (variable). The name of the current tab is added to the name of the attribute. If
the attribute does not have a value, the name of the "3D geometry" tab is used.
The variables are enclosed in "%" characters.
Example: "%Y00T00011.Y00A00038%"
The variable is unlinked in the engineering data.
Requirements
● You have opened the "Define catalog access" window for one of the fields of the "General
geometry description" control group. You have selected the "CatStd(...)" entry in the
"Function" field.
● You have followed the naming system of the standard catalog.
Preparing for creation and maintenance of pipe specs
3.5 Administering pipe part catalogs
PipeSpec Designer
32 Operating Manual, 09/2014, A5E32076948-AA

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