EIA-232D SYNC/570 Cabling
Use these diagrams as a reference when building or purchasing EIA-232 cables. See
Tips for Building and Purchasing Cables for cable length and quality concerns.
DB-15
Pin Number
| Signal
| DB-25
Pin Number
| DB-15 Female Connector
|
| 1
| Not connected
| 1
|
| 2
| TxD Transmitted Data
| 2
|
| 3
| RxD Received Data
| 3
|
| 4
| RTS Request to Send
| 4
|
| 5
| CTS Clear to Send
| 5
| DB-25 Male Connector
|
| 6
| DSR Data Set Ready
| 6
|
| 7
| Signal Ground
| 7
|
| 8
| DCD Data Carrier Detect
| 8
|
| 12
| RxC Receive Clock
| 17
|
| 13
| TxC Transmit Clock (Output)
| 24
|
| 14
| TxC Transmit Clock (Input)
| 15
|
| 15
| DTR Data Terminal Ready
| 20
|
| shell
| CGND
| shell
|