Hey there! Since you're new to this, let's make this conversion straightforward. First, let's recap the mapping you need:

• PU (Pen Up) translates to G-Code with Z1000
• PD (Pen Down) translates to G-Code with Z0
• Both use the G01 command for linear movement, followed by the X/Y coordinates from the PLT file

Step-by-Step Python Script (Beginner-Friendly) #

Python is perfect for this task because it's easy to learn and handles text processing like a charm. Here's a simple script that will take your PLT file and spit out the exact G-Code you need:

# Simple PLT to G-Code converter for plotters
def plt_to_gcode(plt_file_path, output_gcode_path):
    # Read the entire PLT file content
    with open(plt_file_path, 'r') as plt_file:
        plt_content = plt_file.read()
    
    # Split the content into individual commands (each ends with a semicolon)
    commands = plt_content.split(';')
    
    # Create and write to the output G-Code file
    with open(output_gcode_path, 'w') as gcode_file:
        for cmd in commands:
            # Skip empty lines caused by trailing semicolons
            cmd = cmd.strip()
            if not cmd:
                continue
            
            # Handle Pen Up (PU) commands
            if cmd.startswith('PU'):
                z_pos = 1000
                # Extract X/Y by removing the 'PU' prefix and splitting on comma
                x_y = cmd[2:].split(',')
            # Handle Pen Down (PD) commands
            elif cmd.startswith('PD'):
                z_pos = 0
                x_y = cmd[2:].split(',')
            # Ignore any unknown commands (add a comment to the G-Code)
            else:
                gcode_file.write(f"; Skipped unknown command: {cmd}\n")
                continue
            
            # Make sure we have valid X and Y coordinates
            if len(x_y) == 2:
                x_coord = x_y[0].strip()
                y_coord = x_y[1].strip()
                # Write the formatted G-Code line
                gcode_line = f"G01 X{x_coord} Y{y_coord} Z{z_pos}\n"
                gcode_file.write(gcode_line)
            else:
                gcode_file.write(f"; Invalid coordinate format in: {cmd}\n")

# Use this section to point to your files
if __name__ == "__main__":
    # Replace these with your actual file names/paths
    input_plt_file = "your_plot_file.plt"
    output_gcode_file = "converted_gcode.gcode"
    
    plt_to_gcode(input_plt_file, output_gcode_file)
    print(f"Conversion complete! Check {output_gcode_file} for your G-Code.")

How to Use This Script #

1. Install Python: If you don't have it yet, grab it from the official Python website (it's free and takes 2 minutes to install).
2. Save the Script: Copy the code above into a file named plt2gcode.py.
3. Prepare Your PLT File: Put your PLT file in the same folder as the script, and rename it to your_plot_file.plt (or update the input_plt_file variable in the script to match your file's name).
4. Run the Script: Open a command prompt/terminal in that folder, type python plt2gcode.py, and hit enter.
5. Get Your G-Code: The converted file will be saved as converted_gcode.gcode in the same folder.

Quick Notes for Beginners #

• Large Files: Don't worry about thousands of coordinates—Python handles this easily without slowing down.
• Unknown Commands: If your PLT file has other commands (like PA for absolute positioning), you can add extra elif blocks to handle them (just follow the pattern for PU/PD).
• Debugging: If some lines look off, check the comments in the output G-Code—they'll tell you if any commands were skipped or had invalid coordinates.

内容的提问来源于stack exchange，提问作者Pierre P