LEMO 5-pin
1. +12 VDC to +ve terminal battery
2. Data terminal ready
3. 0 V (common) . Also to -ve terminal battery
4. Transmit data Tx
5. Received data Rx
—————————————-
RS232 - DB9
1. No use
2. Receive data Rx
3. Transmit data Tx
4. Data terminal ready
5. 0 V (common)
6. short to pin 7,8
7. short to pin 6,8
8. short to pin 6,7
9. no use