6.4Example of Connection to a Computer
When
IBM PC compatible
Communication control: XON/XOFF or CTS/DTR
“PC” |
| Printer |
|
(DB25P) | (DB25P) | ||
F.GND | 1 | 1 | F.GND |
TXD | 2 | 3 | RXD |
RXD | 3 | 2 | TXD |
CTS | 5 | 20 | DTR (Ready/Busy) |
S.GND | 7 | 7 | S.GND |
DSR | 6 | 4 | RTS |
DTR | 20 | 5 | CTS |
“PC” |
| Printer |
|
(DB9P) | (DB25P) | ||
| NC | 1 | F.GND |
TXD | 3 | 3 | RXD |
RXD | 2 | 2 | TXD |
CTS | 8 | 20 | BUSY |
S.GND | 5 | 7 | S.GND |
DSR | 6 | 4 | RTS |
DTR | 4 | 5 | CTS |