AutoCAD LISP FAQs

Question 1

What is AutoCAD LISP and what does it do?

Accepted Answer

AutoCAD LISP enables natural language control of AutoCAD LT for generating engineering drawings and P&ID diagrams. You can use conversational prompts to create drawings and automate tasks instead of manual CAD commands.

Question 2

How can I improve the performance of AutoCAD LISP?

Accepted Answer

Use the 'fast mode' server (server_lisp_fast.py), leverage batch operations for creating multiple objects, and adjust performance settings within the Python code based on your system's capabilities. Ensure AutoCAD's trusted paths include the LISP directory.

Question 3

What are the benefits of using the CTO P&ID Symbol Library?

Accepted Answer

The CTO Library provides access to over 600 ISA 5.1-2009 standard P&ID symbols, intelligent attribute handling for equipment schedules, and specialized tools for process engineering drawings, drastically improving P&ID creation workflow.

Question 4

Which AutoCAD versions are supported?

Accepted Answer

AutoCAD LISP supports AutoCAD LT 2024 and newer versions that include AutoLISP support.

Question 5

What if I don't have the CTO P&ID Symbol Library?

Accepted Answer

You can still use AutoCAD LISP for basic drawing operations, block insertion, layer management, and other CAD tasks. However, the P&ID-specific tools that rely on the CTO library will not function. You can use standard AutoCAD blocks instead.

AutoCAD LISP

AutoCAD LISP

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