Pin No. Signal name Direction
5
SG
6
DSR
7
RTS
8
INIT
9
FAULT
Star mode
Data terminal ready signal.
When the printer is ready to receive data, this
signal changes to "SPACE".
—
Signal ground
IN
Signal line that indicates whether the host can
receive data
SPACE: Host can receive data
MARK: Host cannot receive data
Does not confirm the status of this signal in XON/
XOFF communication or STAR mode.
This signal line can be used as an external reset
signal by setting the DIP switches. A pulse width of
1 ms or more mark state activates reset.
OUT
Same as DTR signal.
IN
This signal line can be used as an external reset
signal by setting the DIP switches. A pulse width of
1 ms or more space state activates reset.
OUT
In the Star mode, the printer will enter the mark
state during the following errors: no paper, head up,
cutter error. In ESC/POS mode, this is normally
space.
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Function