Why won't the print start when M109 command is used?
When I try to start a print job that contains the M109 (wait for temperature to be reached) command, it just hangs. Here is my gcode:
M190 S55 ; set bed temperature
M104 S200 ; set temperature
G28 ; home all axes
G1 Z5 F5000 ; lift nozzle
M109 S200 ; wait for temperature to be reached
If I manually preheat the bed and extruder and comment out the M109 line of code the print starts with no issue.
Something that may be related, during the preheat step the bed temperature display in Repetier-Host shows 54.90 even though the LCD display on the printer shows the value going up and down. After the print starts, the display starts working again.