Welcome to the SeeMeCNC Community

Hey I've added in some manual temp adjustments to the gcode of a calibration tower, and included the following statements at each temp jump. But the message does not appear on the LCD, nor does the Beep, well "beep".

Printer: Rostock v2, Firmware 0.92.2

M117 Setting temp: 240
M300 S300 P1000

Maybe the M117 is displayed on page 2 or 3? I would like it on page 1 so I can see the temps and also the message. But the Print Status message is shown on line 4 of page1

Any opinions on this?

On more of a basic level, are you not supposed to edit a gcode file, like a text file? Maybe the printer doesn't recognize edits somehow.

No, I edit mine all of the time using Notepad++. No problems.

Be sure that your editor appends a "Carriage Return / Line Feed" character pair to the end of each line.

Can you post your G-Code for us please?