Operation; Led Status Monitors - Patton electronics 2039 User Manual

Once your interface converter is properly configured and installed,
it should operate transparently—as if it were a standard cable
connection. Operating power is derived from the RS-232 data and
control signals; there is no "ON/OFF" switch.

5.1 LED STATUS MONITORS

The Model 2039 features an easy-to-read status LED that glows
red to indicate the condition of the transmission line. Figure 1 shows
the location of the LED. The following chart describes the LED's
various functions.
● ● — ● ——— ● ● — ● ———
● ——— ● ——— ● ———
● ● ——— ● ● ———
● — ● ——— ● — ● ———
● ● ● ● ———● ● ● ●
The red LED indicator blinks to show data activity. However, since
there is only one indicator, it uses different LED codes to demonstrate
various messages. The following chart describes these codes:
Key:
Blink
●
Short pause
—
Long pause
———

5.0 OPERATION

LED Codes
Computer is sending data
Serial device is connected; computer is
not sending data
Both serial and parallel devices are
connected; computer not sending
data
Printer not ready, data held in buffer
Computer ignoring flow control, data lost
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