COM port to TTL (5V/3.3V) programming cable for CC18, MS121, HD8 and other controllers with a 4-pin programming connector. Can also be used as a TTL to RS232 adapter on newer controllers such as the DIN Family for custom communications.
| DB9 Female |
| Pin |
Description |
Direction |
| 2 |
Transmit Data |
OUT |
| 3 |
Receive Data |
IN |
| 5 |
Ground |