What Command Is Used To Control System Variables In AutoCAD?

Understanding System Variables in AutoCAD

System variables in AutoCAD are essential parameters that govern the functionality of the software. They determine how certain actions are executed and how information is displayed. Each system variable can be adjusted to suit user preferences, allowing for a more personalized drawing and design experience.

Command to Control System Variables

To manipulate system variables in AutoCAD, users rely on the SETVAR command. This command is particularly powerful, as it allows users to set specific values for various system variables, impacting the behavior of the software instantly.

How to Use the SETVAR Command

1. Access the Command Line: Open AutoCAD and ensure the command line is visible at the bottom of your workspace.

2. Type the Command: Enter SETVAR into the command line and press Enter. This will prompt you to input the variable name you wish to change.

3. Specify the Variable: Type the name of the system variable you want to modify, such as LTSCALE for line type scale, and press Enter.

4. Enter the New Value: After specifying the variable, you will be prompted to enter a new value for it. Input the desired value and press Enter again.

5. Confirm the Change: You can check if the value has been properly updated by re-entering the command, typing the variable name, and verifying the displayed value.

Monitoring System Variable Changes

Understanding how to monitor system variables can help you maintain desired settings. AutoCAD comes with a System Variable Monitor, which tracks changes to these variables. When enabled, it will display alerts if variables deviate from their preset values.

Steps to Activate System Variable Monitor

1. Open the Monitor: Type SYSVARMONITOR in the command line and press Enter.

2. Select Variables to Monitor: A dialog box will appear, allowing you to choose which system variables to keep an eye on.

3. Save Your Preferences: After selecting, save the settings to ensure the monitor is operational during your design sessions.

Reseting System Variables

At times, system variables may adjust due to various commands or customized routines. If you wish to revert these variables to their default settings, you can reset them manually or through the System Variable Monitor.

Manual Reset Process

1. Identify the Variable: Determine which variable needs resetting by noting its current value.

2. Use the SETVAR Command: Follow the earlier instructions for using SETVAR, specifying the name of the variable.

3. Input Default Value: Enter the default value for that system variable and press Enter to apply the change.

Frequently Asked Questions

1. How can I find out what system variables are available in AutoCAD?
You can find a list of available system variables by typing ? in the command line after entering SETVAR. This will display all system variables along with their current values.

2. Can I save my system variable settings between sessions?
Yes, you can save your system variable settings using the SYSVDLG command. This allows you to save a configuration file (*.svf) that can be reloaded in future sessions.

3. What happens if I set a system variable to an incorrect value?
Setting a system variable to an incorrect value may lead to unexpected behavior in your drawings. If this occurs, you can simply use the SETVAR command again to revert it to a known good value or default.