Lantronix MSS1-T, Reference Manual, Page: 19 / 117

Installation MSS485 Components
2 - 3
NOTE: When the reset button is pressed and held during the power up and boot
procedures, the MSS returns to its factory default configuration.
Four LEDs are located on the top of the unit. The first LED is a Power indicator, and should remain
green while the MSS is plugged in. The second is a network Link indicator, and should remain
green while the MSS is connected properly to a 10BASE-T network. The remaining two LEDs
indicate network (
OK ) and serial port ( Serial ) activity. They will blink off, yellow, green, or red
depending on the current activity.
Figure 2-6: MSS485 Top Panel Showing LEDs
NOTE:
Although a red LED during boot mode usually signals an error, red LED patterns
are part of the normal operation of the MSS and are not necessarily indicative of
errors or dangerous operation.
The top of the MSS485 also contains an oval-shaped hole in the lower left corner. The hole
accommodates a screwdriver, which is needed to attach cabling wires to the screw terminal block.
Eight DIP switches are located on the bottom of the MSS485, along with a label that shows how to
configure them. DIP switch settings will be explained in step 5 of the installation instructions (see
page 2-5).
Figure 2-7:
MSS485 Bottom Label Showing DIP Switches
MSS485
RS-485 Serial Server
POWER
LINK
OK
SERIAL
6VDC 10BASE-T RESET
SERIAL CONSOLE
SHLD
TXA TXB
RXB RXA SHLD
POWER
LINK
OK
SERIAL
LEDs
Switch Group Functions
2 Wire 485
4 Wire 485
4 Wire 485 Termination
2 Wire 485 Termination
No Termination
2 or 4 Wire 485 RX Biasing
No RX Biasing
Ground Shield
Float Shield
6
8
7
4 5
2 3 1
2 3 1 6 7 4 5 8