14
Standard serial interface pins and signal names
Pin
Signal
Direction
No.
Name
1
FG
—
2
RXD
IN
3
TXD
OUT
4
DTR
OUT
5
SG
—
6
DSR
IN
7
RTS
OUT
8
INIT
IN
9
N/C
—
Frame Ground
Receive data
Transmission data
Data terminal ready signal. This signal changes to SPACE when the printer is ready to
receive data.
Signal ground
Signal line that indicates if the host computer can receive data.
SPACE: host can receive
MARK: host cannot receive
The status of this signal is not confirmed.
This signal can be specified as an internal reset signal using Switch 7 of DIP Switch 1
(page 4). MARK of 1ms or longer activates the reset.
Same as DTR (Pin 4).
This signal can be specified as an internal reset signal using Switch 8 of DIP Switch 1
(page 4). SPACE of 1ms or longer activates the reset.
Not connected
Receipt printer head-up error
Receipt printer auto cutter error
Receipt printer thermistor error
Cover open error
Slip printer mechanical error
1: Error
Receipt paper empty error (inclu
1: Empty
Buffer empty
Function