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Chapter 6: Operation
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Figure 6-2. Front panel of the LES422A.
Table 6-2. LEDs and switches on the LES422A serial server.
Number in Figure
6-2 LED Indicator Description
1(2) Serial Port LEDs ( P1, P2) Each serial port has an as sociated LED. The Ser ial Port LED flash es (green) when da ta is being
transmitted or received on th e serial ports. When the LED is illum inated, it indicates the serial port is o pen.
2(1) Ready LED
The Ready LED (green) illuminates continuously while the unit is initializing. It flashes once per second when the
system is operating correctly. If the LED is not flashing, it indicates that something is wrong (e.g., another device on
the network at the same I P address).
3(1) Ethernet Link LED
Lights when a connection is made.
Flashes when there is data t raffic on the Ethernet link.
4(1) Reset switch A recessed momentary Res et switch is locate d on the side of the enclosure. To activate th e switch, insert a small
plastic tool through the hole in the enclosure and press lightly.