Epson ActionPrinter 4500X User Manual - Page 206
Printing Enabled/Disabled Signals and Control Conditions, data on/off control characters, DC1 or DC3.
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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, DC1 or DC3. ON LINE SLCT IN DC1/DC3 ERROR BUSY (Indicator (Data on) on/off control) ACKNLG Printing (Disabled/ enabled) On line Low (J10 DC1/DC3 High interface) (no effect) High/Low Pulsed Enabled each (normal character condition) On line High DC1 High Recv'd High/Low Pulsed Enabled each character On line High DC3 High Recv'd High/Low Pulsed Disabled* each character Off line High/Low DC1/DC3 Low High (no effect) (no effect) Not Disabled generated l While printing is disabled, character data is being received and acknowledged so that the printer can look for another DC1 character, which would allow it to resume printing. 8-12 Technical Specifications