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$159.99 a pair
Wireless Serial Adapter
(Bluetooth to RS232)
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Cabling Information
DB-25 Pin Description in RS422 Mode
| Pin # |
Signal |
Description |
Signal Direction |
| 1 |
GND |
Ground |
Common |
| 2 |
TxD+ |
Transmit Data+ |
Output |
| 3 |
RxD+ |
Receive Data+ |
Input |
| 4 |
RTS+ |
Request To Send+ |
Output |
| 5 |
CTS+ |
Clear To Send+ |
Input |
| 6 |
DSR+ |
Data Set Ready+ |
Input |
| 7 |
GND |
Ground |
Common |
| 8 |
DCD+ |
Data Carrier Detect+ |
Input |
| 9 |
DTR- |
Data Terminal Ready- |
Output |
| 10 |
RI- |
Ring Indicator- |
Input |
| 14 |
TxD- |
Transmit Data- |
Output |
| 15 |
RxD- |
Receive Data- |
Input |
| 16 |
RTS- |
Request To Send- |
Output |
| 17 |
CTS- |
Clear To Send- |
Input |
| 18 |
DSR- |
Data Set Ready- |
Input |
| 19 |
DCD- |
Data Carrier Detect- |
Input |
| 20 |
DTR+ |
Data Terminal Ready+ |
Output |
| 22 |
RI+ |
Ring Indicator- |
Input |
DB-25 Pin Description in RS485 Mode
| Pin # |
Signal |
Description |
Signal Direction |
| 1 |
GND |
Ground |
Common |
| 2 |
TxD+ |
Transmit Data+ |
Output |
| 3 |
RxD+ |
Receive Data+ |
Input |
| 14 |
TxD- |
Transmit Data- |
Output |
| 15 |
RxD- |
Receive Data- |
Input |
DB-37 Pin Description RS422/RS485 mode
| Pin # |
Port # |
Signal |
Description |
| 1 |
1 |
GND |
Ground |
| 2 |
1 |
TxD+ |
Transmit Data+ |
| 3 |
1 |
RxD+ |
Receive Data+ |
| 4 |
1 |
RTS+ |
Request To Send+ |
| 5 |
1 |
CTS+ |
Clear To Send+ |
| 6 |
1 |
DSR+ |
Data Set Ready+ |
| 7 |
1 |
GND |
Ground |
| 8 |
1 |
DCD+ |
Data Carrier Detect+ |
| 9 |
1 |
DTR- |
Data Terminal Ready- |
| 10 |
1 |
RI- |
Ring Indicator- |
| 11 |
2 |
TxD+ |
Transmit Data+ |
| 12 |
2 |
RxD+ |
Receive Data+ |
| 13 |
2 |
RTS+ |
Request To Send+ |
| 14 |
2 |
CTS+ |
Clear To Send+ |
| 15 |
2 |
DSR+ |
Data Set Ready+ |
| 16 |
2 |
GND |
Ground |
| 17 |
2 |
DCD- |
Data Carrier Detect- |
| 18 |
2 |
DTR- |
Data Terminal Ready- |
| 19 |
2 |
RI- |
Ring Indicator- |
| 20 |
1 |
TxD- |
Transmit Data- |
| 21 |
1 |
RxD- |
Receive Data- |
| 22 |
1 |
RTS- |
Request To Send- |
| 23 |
1 |
CTS- |
Clear To Send- |
| 24 |
1 |
DSR- |
Data Set Ready- |
| 25 |
1 |
DCD- |
Data Carrier Detect- |
| 26 |
1 |
DTR+ |
Data Terminal Ready+ |
| 27 |
1 |
RI+ |
Ring Indicator+ |
| 28 |
- |
- |
- |
| 29 |
2 |
GND |
Ground |
| 30 |
2 |
TxD- |
Transmit Data- |
| 31 |
2 |
RxD- |
Receive Data- |
| 32 |
2 |
RTS- |
Request To Send- |
| 33 |
2 |
CTS- |
Clear To Send- |
| 34 |
2 |
DSR- |
Data Set Ready- |
| 35 |
2 |
DCD- |
Data Carrier Detect- |
| 36 |
2 |
DTR+ |
Data Terminal Ready+ |
| 37 |
2 |
RI+ |
Ring Indicator+ |
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