Appendix B: Serial Interface; B-1. Pins And Signal Names - Star SP2000 Série Mode D'emploi

B-1. Pins and Signal Names

Pin No. Signal Name
1 FG
2 TXD
3 RXD
4 RTS
5 N.C.
6 DSR
7 SG
8 -19 N.C.
20 DTR

Appendix B: Serial Interface

Direction
— Frame ground
OUT Transmission data
IN Receive data
When Memory Switch 4-D = 0: Same as DTR signal
OUT
When Memory Switch 4-D = 1: Always SPACE
Not connected
IN • DIP Switch 2-7 = OFF
STAR Mode
Status of this signal is not checked.
ESC/POS Mode
In DTR/DSR communication mode when Memory Switch4-5 = 0,
indicates whether data receive from host is enabled or disabled.
Space: Receive enabled
Mark: Receive disabled
In DTR/DSR communication mode when Memory Switch 4-5=1,
status of this signal is not checked.
This signal is not checked in the X-ON/X-OFF communication
mode.
• DIP Switch 2-7 = ON
This signal used for external reset. Printer is reset whenever signal
is in mark state with pulse width of 1mS or more.
Signal ground
Not connected
OUT Indicates whether data receive from host is enabled or disabled.
DTR/DSR Communication Mode
Space when receive is enabled.
1. During the period from when the power is
turned on (including resetting using the in-
terface) to when the printer is ready to re-
ceive data.
2. During self printing and dot alignment ad-
justment.
3. During paper feeling using the paper feed
button (ESC/POS mode only).
4. When the printer stops printing due to a
paper end or a paper near end.
5. When an error has occurred.
6. When the receive buffer becomes full.
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Function
Printer status
DIP switch 1-2
0 1
BUSY BUSY
BUSY BUSY
BUSY —
BUSY —
BUSY —
BUSY BUSY