Appendix D: Serial Interface; D-1. Rs-232C Connector - Mettler Toledo xpress XTC Bedienungsanleitung

D-1. RS-232C Connector

Pin No.
Signal name Direction
25 Pin 9 Pin
1 F-GND
2 3 TXD
3 2 RXD
4 7 RTS
5 N/C
8 CTS
6 6 DSR
7 5 S-GND
8~19 1,9 N/C
20 4 DTR

Appendix D: Serial Interface

— Frame ground
OUT Transmission data
IN Receive data
OUT Same as DTR signal.
Not used
IN Status of this signal is not checked.
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.
— Signal ground
Not used
Indicates whether data receive from host is enabled or disabled.
OUT
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:
– 105 –
Function