Interpreting The Led Indicators; Serial Port Status - Digi PortServer II User Manual

Interpreting the LED Indicators

The LED indicators are used to display two different types of status information. If the
alphanumeric display shows a port number, the LED indicators display serial port sta-
tus information and the labels above the LEDs apply. If the alphanumeric display
shows EA, the LED indicators display Ethernet activity and the labels below the LEDs
apply. If the alphanumeric display shows AC or PU, the LED indicators do not dis-
play data.

Serial port status

You can display the status of a serial port by pressing either of the pushbuttons until
the port number appears on the alphanumeric display. The LED indicators then pro-
vide RS-232 line status information (in a similar way to a breakout box) and flow con-
trol information, as follows:
Signal
TD
RD
RTS
CTS
DSR
DCD
DTR
RI
OFC
IFC
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CCITT
103 Transmitted Data
104 Received Data
105 Request to Send
106 Clear to Send
107 Data Set Ready
109 Data Carrier Detect
108 Data Terminal Ready
125 Ring Indicator
- Output is Flow Controlled
- Input is Flow Controlled
Operation
Description
90030500B