Rev.
B
Connector Terminal Signals
Appendix A-1
UB-S09 Developer's Guide
Confidential
Appendix A
Connector Terminal Signals
RS-232 Serial Interface Connector
Figure A-1 RS-232 Serial Interface Connector
Pin 7 (RTS) functions:
The function of this pin is selected by the Customer Display (DM-D) Connection DIP switch or
JP1 on the TM printer.
When the Customer Display (DM-D) Connection switch is set to “Connected,” the output
consists of the DTR signal logic of the customer display and the printer.
When the Customer Display (DM-D) Connection switch is set to “Not Connected,” the output is
the same as the DTR signal.
Table A-1 RS-232 serial interface connector pinout
Pin
Signal
name
I/O
Signal function
1
–
–
No connection
2
RxD
I
Receive Data
3
TxD
O
Transmit Data
4
DTR
O
DTR signal
5
SG
–
Signal Ground
6
DSR
I
DSR signal
7
RTS
O
Selectable from the following:
(1) Same output as DTR signal
(2) Outputs the DTR signal logic from the customer display and printer (Space when
both are Space).
8
–
–
Reserved
9
INIT
I
Reset signal
Shell
FG
–
Frame Ground
1
5
6
9
Содержание UB-S09
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