Epson CD5220 - Manual (Page 9)

CD5220 customer display
(b) Power input
Connector type : DC JACK (5.5/2.1)
(c) RS232C to PC/HOST connector pin assignment
Connector type : D-sub 25 pin (Female)
No Signal direction Function description
1 FG - Frame ground
2 TXD From printer to PC/Host Printer status data
3 RXD From PC/Host to display Receive data
4 RTS From display to PC/Host Display/printer ready signal
5 CTS From PC/Host to printer PC/Host ready signal
6 DSR From PC/Host to printer PC/Host ready signal
7 GND - Signal ground
16 V+ Input(optional) If using power built-in
20 DTR From display to PC/Host Display/printer ready signal
Table 4-1
(d) RS232C to printer connector pin assignment
Connector type : D-sub 9 pin (Male)
No Signal direction Function description
2 RXD From printer to PC/Host Printer status data
3 TXD From display to printer Transmit data
4 DTR From PC/Host to printer PC/Host ready signal
5 GND - Signal ground
6 DSR From printer to display Printer ready signal
7 RTS From PC/Host to printer PC/Host ready signal
8 CTS From printer to display Printer ready signal
Table 4-2