Purpose of RS-MO-45 and RS-MO-35 pins
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The RS-MO-45 module is supplied with adapters from two VHDCI 68 to 16 DB-9 Male connectors.
The RS-MO-35 module is supplied with adapters from one VHDCI 68 to 8 DB-9 Male connectors.
The DB-9 connector pinout is shown below:
| Contact | RS-232 | RS-422/485-4W | RS485-2W |
|---|---|---|---|
1 |
DCD |
TxD- (A) |
- |
2 |
RxD |
TxD+ (B) |
- |
3 |
TxD |
RxD+ (B) |
Data+ (B) |
4 |
DTR |
RxD- (A) |
Data- (A) |
5 |
GND |
GND |
GND |
6 |
DSR |
- |
- |
7 |
RTS |
- |
- |
8 |
CTS |
- |
- |