(c) RS232C to PC/HOST connector: D-sub 25 pin female pin assignment
Pin No. Signal Direction Function description
1 FG Frame ground
2 TXD From printer to PC/Host Printer status data
3 RXD Input Receive data
4 RTS Output Display/printer ready signal
5 CTS From PC/HOST to printer Host Ready signal
6 DSR From PC/HOST to printer Host ready signal
7 GND Signal ground
16 V+ Input If using power built-in
20 DTR Output Display/printer ready signal
Table 4-1
(d) RS232C to printer connector: D-sub 9 pin male pin assignment
Pin No. Signal Input / Output direction Function description
2 RXD From printer to PC/Host Printer status data
3 TXD Output Transmit data
4 DTR From PC/HOST to printer Host ready signal
5 GND Signal ground
6 DSR Input Printer ready signal
7 RTS From PC/HOST to printer Host ready signal
8 CTS Input Printer ready signal
Table 4-2
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