WD-2030 XXXX customer display
8
4. Display Module Interface
4.1 RS232 Specifications
Data transmission:
Serial
Synchronization:
Asynchronous
Handshaking:
DTR / DSR
Signal level:
MARK = -3 to –15 V (logic “1”)
SPACE = +3 to +15 V (logic “0”)
Baud rates:
4800,9600,19200 or 115200 bps
Parity and bit length
None parity, 8 data bits or
Even parity, 7 data bits
Stop bits:
1 or more
Table 4-1
4.1.1 RS232 connector to PCB (CN1)
Type: RJ45/8P/8C
Pin assignment
No Signal Direction
Function description
1,2
Vin
-
Power 5VDC or 9~45 VDC
3,4
GND
-
Signal ground
5
CTS From Printer to Display
Printer ready signal
6
RTS From Display to PC/Host Display/Printer ready signal
7
RXD From PC/Host to Display Display/Printing data signal
8
TXD From Display to Printer
Printer status data signal
Table 4-2
