Oki OkiPOS406 OkiPOS406 Users Guide - Page 108

Appendix D: Serial Interface, D-1. RS-232C Connector

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Appendix D: Serial Interface D-1. RS-232C Connector Pin No. 25 Pin 9 Pin Signal name Direction 1 F-GND - 23 TXD OUT 32 RXD IN 47 RTS OUT 5 N/C 8 CTS IN 66 DSR IN 75 8~19 1,9 20 4 S-GND N/C DTR - OUT Function Frame ground Transmission data Receive data Same as DTR signal. Not used Status of this signal is not checked. • DIP Switch 3-7=OFF STAR Mode Status of this signal is not checked. ESC/POS Mode In DTR/DSR communication mode, indicates whether data receive from host is enabled or disabled. Space: Receive enabled Mark: Receive disabled (except when transmitting data by DLE EOT, and GS a) This signal is not checked in the X-ON/X-OFF communication mode. • DIP Switch 3-7=ON This signal used for external reset. Priter is reset whenever signal is in mark state with pulse width of 1mS or more. Signal ground Not used Indicates whether data receive from host is enabled or disabled. 1) DTR/DSR Communication Mode This signal indicates whether the printer is busy. SPACE indicates that the printer is ready to receive data, and MARK indicates that the printer is busy. The busy condition can be changed by using DIP SW 1-6 as follows: APPENDIX - 105 -

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– 105 –
APPENDIX
Appendix D: Serial Interface
D-1.
RS-232C Connector
Pin No.
Signal name
Direction
Function
25 Pin
9 Pin
1
F-GND
—
Frame ground
2
3
TXD
OUT
Transmission data
3
2
RXD
IN
Receive data
4
7
RTS
OUT
Same as DTR signal.
5
N/C
Not used
8
CTS
IN
Status of this signal is not checked.
6
6
DSR
IN
• DIP Switch 3-7=OFF
STAR Mode
Status of this signal is not checked.
ESC/POS Mode
In DTR/DSR communication mode, indicates whether data receive
from host is enabled or disabled.
Space: Receive enabled
Mark: Receive disabled
(except when transmitting data by DLE EOT, and GS a)
This signal is not checked in the X-ON/X-OFF communication
mode.
• DIP Switch 3-7=ON
This signal used for external reset. Priter is reset whenever signal
is in mark state with pulse width of 1mS or more.
7
5
S-GND
—
Signal ground
8~19
1,9
N/C
Not used
20
4
DTR
OUT
Indicates whether data receive from host is enabled or disabled.
1) DTR/DSR Communication Mode
This signal indicates whether the printer is busy. SPACE
indicates that the printer is ready to receive data, and MARK
indicates that the printer is busy. The busy condition can be
changed by using DIP SW 1-6 as follows: