Appendix, Appendix a: serial interface, A-1. connectors and signals – Star Micronics SP200F User Manual
Page 90: Rs-232c
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APPENDIX
Appendix A: Serial Interface
14
1
13
25
A-1. Connectors and Signals
RS-232C
Pin no.
Signal name
I/O direction
Function
1
F-GND
—
Frame ground
2
N/C
Not connected
3
RXD
IN
Received data
4
RTS
OUT
Data transmission request signal. This is always
“SPACE” when the printer is turned on. (Always
“SPACE” status)
5-6
N/C
Not connected
7
S-GND
—
Signal ground
8-10
N/C
Not connected
11
RCH
OUT
When the printer is ready to receive data, the signal line
is same as pin 20.
12
N/C
Not connected
13
GND
—
Signal ground
14
FAULT
OUT
When printer error occurs (such as paper out, mechani-
cal error, etc.) this signal changes to “MARK”.
15-19
N/C
Not connected
20
DTR
OUT
Data terminal ready signal. When the printer is ready to
receive data, this signal changes to “SPACE”.
21-25
N/C
Not connected
Fig. A-1 Serial interface connector