Ricon LASER AP1600 Operating Instructions Manual page 134

The timing of the DTR signal and the RTS signal are shown in the following ta-
ble.
Status of the printer
Offline
You cannot print due to
an error such as an open
cover or empty paper
tray.
Receive buffer is full
While outputting
Controlling the data with the DTR signal or the DTR+RTS signal
If you want to stop receiving the data from the computer, set the DTR to
LOW. Set the DTR to HIGH to have the data resent from the computer.
Signal Serial
DTR
RTS HIGH
DTR LOW
RTS HIGH
DTR LOW
RTS HIGH
DTR LOW
RTS HIGH
DTR HIGH
Specifications of the Serial Interface (RS232C)
Serial Serial
XON/ DTR+RTS
XOFF
HIGH LOW
HIGH LOW
HIGH LOW
HIGH LOW
HIGH LOW
HIGH LOW
HIGH HIGH
HIGH HIGH
Configur-
ing the
parallel
port
LOW
LOW
LOW
LOW
LOW
LOW
LOW
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