Appendix C — Interfaces
RS-232 Serial Interface
Printer connector: |
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Printer | EasyCoder PC4 |
| Host |
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Signal | Signal |
| Signal | ||
| 1 | +5V 500 mA1 | 1 |
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RXD | 2 | TXD | 2 | 3 | RXD |
TXD | 3 | RXD | 3 | 2 | TXD |
DTR | 4 | – | 4 | 20 | DTR |
GND | 5 | GND | 5 | 7 | GND |
DSR | 6 | RDY | 6 | 6 | DSR |
RTS | 7 | – | 7 | 4 | RTS |
CTS | 8 | RDY | 8 | 5 | CTS |
| 9 | – | 9 |
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1/.The combined load on the external +5V on both the parallel and the serial port must not exceed a total of 500 mA.
EasyCoder PC4 User’s Guide | 53 |
