Epson ActionPrinter L-750 User Manual page 87

Interface Specifications
Printing enabled/disabled signals and control conditions
The table below shows the relationship between printing being
enabled or disabled, the on line/off line status, and the receipt of
the data on/off control characters, DCl, or DC3.
While printing is disabled, character data is being received and acknowledged
l
so that the printer can look for another DC1 character that will allow it to resume
printing.
Technical Specifications
5-10