The console port on the RSM is an EIA/TIA-232, DCE, DB-25 receptacle for connecting a data terminal. Both DSR and DCD are active when the RSM is running. The RTS signal tracks the state of the CTS input. The console port requires a straight-through EIA/TIA-232 cable. Table 7 lists the signals used on this port.
Before connecting the console port, check your terminal's documentation to determine its baud rate, which must match the default baud rate (9600 baud) of the console port on the RSM. Set up the terminal as follows: 9600 baud, 8 data bits, no parity, 2 stop bits.
Note The console port does not support modem control or hardware flow control.
Table 7: RSM Console Port Signals
|
Pin |
Signal |
Direction |
Description |
|
1 |
GND |
- |
Ground |
|
2 |
TxD |
<— |
Transmit Data |
|
3 |
RxD |
—> |
Receive Data |
|
6 |
DSR |
|
Data Set Ready (always on) |
|
7 |
GND |
- |
Ground |
|
8 |
DCD |
—> |
Data Carrier Detect (always on) |
|
|
The auxiliary port on the RSM is an EIA/TIA-232 DTE, DB-25 plug to which you can attach a modem or other DCE device such as a channel service unit/data service unit (CSU/DSU) or router. Table 8 lists the EIA/TIA-232 signals used on this port.
Note The asynchronous auxiliary port supports hardware flow control and modem control.
Table 8: Auxiliary Port Signals
|
Pin |
Signal |
Direction |
Description |
|
2 |
TxD |
—> |
Transmit Data |
|
3 |
RxD |
<— |
Receive Data |
|
4 |
RTS |
—> |
Request To Send (used for hardware flow control) |
|
5 |
CTS |
<— |
Clear To Send (used for hardware flow control) |
|
6 |
DSR |
<— |
Data Set Ready |
|
7 |
Signal Ground |
— |
Signal Ground |
|
8 |
CD |
<— |
Carrier Detect (used for modem control) |
|
20 |
DTR |
—> |
Data Terminal Ready (used for modem control only) |
|
|