Serial Signals - Lantronix SCS Reference Manual

Ports
Refer to Flow Control on page 8-18 for a description of the different methods. Choose the method
that's most compatible with the modem and applications you'll be using.
4 Configure Flow Control
To configure your modem, refer to the modem's documentation. To configure flow control on the
SCS, use the Set/Define Ports Flow Control command. Figure 8-49 displays an example.
Local>> DEFINE PORT 2 FLOW CONTROL CTS
For this command's complete syntax, see Set/Define Ports Flow Control on page
Note:
12-72.

8.12 Serial Signals

Two of the modem signals (DSR and DCD) can be used to control when the SCS ports are active. By
monitoring when these signals are asserted or deasserted (dropped), SCS ports can be logged out or kept
from starting. The SCS uses DTR to control attached devices.
All of the SCS's DB25 and RJ45 signals are displayed in the following figures.
Figure 8-49: Configuring RTS/CTS Flow Control
Figure 8-50: DB25 Serial Signals
Tx (Transmit)
Rx (Receive)
RTS (output)
CTS (input)
SCS DSR (input)
Ground
DCD (input)
DTR (output)
8-20
Serial Signals
Modem