LapLink /Null
MODEM Cable
Pin Connections for a Serial Cable
This section describes the wiring specifications for serial LapLink cables.
Make a serial cable with either a 9-pin or a 25-pin
female connector on both ends. Three wires are Required for data transmission:
Ground-Ground, Transmit-Receive, and Receive- Transmit. Seven wires are required if you
want to use the remote copy feature. Wire the cable as follows:
9 PIN TO 9 PIN SERIAL
| (Ground-Ground) | pin 5 | TO | pin 5 |
| (Transmit-Receive) | pin 3 | TO | pin 2 |
| (RTS - CTS) | pin 7 | TO | pin 8 |
| (DSR - DTR) | pin 6 | TO | pin 4 |
| (Receive-Transmit) | pin 2 | TO | pin 3 |
| (CTS - RTS) | pin 8 | TO | pin 7 |
| (DTR - DSR) | pin 4 | TO | pin 6 |
25 PIN TO 25 PIN SERIAL
| (Ground-Ground) | pin 7 | TO | pin 7 |
| (Transmit-Receive) | pin 2 | TO | pin 3 |
| (RTS - CTS) | pin 4 | TO | pin 5 |
| (DSR - DTR) | pin 6 | TO | pin 20 |
| (Receive-Transmit) | pin 3 | TO | pin 2 |
| (CTS - RTS) | pin 5 | TO | pin 4 |
| (DTR - DSR) | pin 20 | TO | pin 6 |
Pin Connections for a Parallel Cable
This section describes the wiring specifications for parallel LapLink cables.
Make a parallel cable with male DB-25 connectors at
both ends. Eleven wires are required for data transmission.
25 PIN TO 25 PIN PARALLEL
| pin 2 | TO | pin 15 |
| pin 3 | TO | pin 13 |
| pin 4 | TO | pin 12 |
| pin 5 | TO | pin 10 |
| pin 6 | TO | pin 11 |
| pin 15 | TO | pin 2 |
| pin 13 | TO | pin 3 |
| pin 12 | TO | pin 4 |
| pin 10 | TO | pin 5 |
| pin 11 | TO | pin 6 |
| pin 25 | TO | pin 25 |