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Equivalent to MAX232
Mark=(-8V): At Busy Mark=(-8V): 1
Space=(+8V): At Ready Space=(+8V): 0
(2) Others
•RESET : A signal to reset the entire printer.
•PE : A signal to show that the paper has run out. Normal at the "LOW" level, but turned to
the "HIGH" level when the paper has run out.
•GND : Signal ground
•FG : Frame ground
DTR
TXD