Table 7 Serial Jack, RS232 & RS485
RS232 Jack
DB9 Pin | Assignment |
| Direction |
|
| Name |
|
1 | DCD | CF | In |
| (Data Carrier Detect) |
|
|
2 | RX | BB | In |
| (Receive Data) |
|
|
3 | TX | BA | Out |
| (Transmit Data) |
|
|
4 | DTR | CD | Out |
| (Data Terminal Ready) |
|
|
5 | GND | AB | GND |
| (Signal Ground) |
|
|
6 | DSR | CC | In |
| (Data Set Ready) |
|
|
7 | RTS | CA | Out |
| (Request to Send) |
|
|
8 | CTS | CB | In |
| (Clear to Send) |
|
|
9 | RI | CE | In |
| (Ring Indicator) |
|
|
RS485 Jack
DB9 Pin Assignment Direction
1 | NC |
|
2 | Rx- | In |
3 | Tx+ | Out |
4 | NC |
|
5 | GND | GND |
6 | NC |
|
7 | Tx- | Out |
8 | Rx+ | In |
9 | NC |
|
Page 38
Copyright March 2003, Computer Dynamics, Inc.
All Rights Reserved
