G04 Dwell
This is similar to the usage in machining centres. It is used to specify a programmed pause in axes motion for a specified duration. After the specified time, the program automatically continues to the next block. This is a non-modal command. The dwell time can be specified using the X, U, or P word address as follows :
N45 G04 X4.5; (Dwell of 4.5 seconds) N65 G04 X4500;
N55 G04 U4.5; N35 G04 U4500; N75 G04 P4500;