Lantronix XPress-DR-IAP XPress-DR / XPress-DR-IAP - User Guide - Page 26

Table 4 - Front Panel Components, Component, Purpose

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Introduction Table 4 - Front Panel Components Item 1 2 3 4 5, 6, 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Component Screw terminal Screw terminal Screw terminal Screw terminal Screw terminal Screw terminal Reset switch LED (Red) LED (Green) LED (Yellow) LED (Green) Connector (RJ45) Connector (RJ45) LED (Yellow) LED (Yellow) Switch Screw terminal Screw terminal Screw terminal Screw terminal Name RXD or RXA CTS or RXB RTS or TXB TXD or TXA NC GND RESET Fault or Configuration Ready Activity Link Ethernet port Serial port Serial TXD Serial RXD Switch for screw block DC + (or AC) Ground DC - (or AC) Ground Purpose RS-232: RXD (Received Data) RS-422/485:RXA (Received Data -) RS-232: CTS (Clear to Send) RS-422/485: RXB (Received Data +) RS-232: RTS (Request to Send) RS-422/485: TXB (Transmit Data +) RS-232: TXD (Transmit Data) RS-422/485: TXA (Transmit Data -) No connection Signal ground Push to power reset and initialize SOLID: Fault in XPress DR communication (read error) or XPress DR is in Configuration Mode SOLID: Ready, Flashing: Error Message FLASHING: Network traffic SOLID: XPress DR has good Ethernet link RJ45 connector for Ethernet 10BaseT RJ45 connector for RS-232,RS-422/485 FLASHING: Indicates transmission from the serial port FLASHING: Indicates reception to the serial port UP: Serial RS-232 DOWN: Serial RS-422/485 Operating power, DC positive or AC Earth ground Operating power, DC negative or AC Earth ground Note: For RS-485 2-wire functionality, pins 1 & 4 and 2 & 3 of the screw terminals must be connected together. 1-12 DSTni-XPress DR User Guide

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Introduction
Table 4 - Front Panel Components
Item
Component
Name
Purpose
1
Screw terminal
RXD or RXA
RS-232: RXD (Received Data)
RS-422/485:RXA (Received Data -)
2
Screw terminal
CTS or RXB
RS-232: CTS (Clear to Send)
RS-422/485: RXB (Received Data +)
3
Screw terminal
RTS or TXB
RS-232: RTS (Request to Send)
RS-422/485: TXB (Transmit Data +)
4
Screw terminal
TXD or TXA
RS-232: TXD (Transmit Data)
RS-422/485: TXA (Transmit Data -)
5, 6, 7
Screw terminal
NC
No connection
8
Screw terminal
GND
Signal ground
9
Reset switch
RESET
Push to power reset and initialize
10
LED (Red)
Fault or
Configuration
SOLID: Fault in
XPress DR
communication
(read error) or
XPress DR
is in Configuration
Mode
11
LED (Green)
Ready
SOLID: Ready, Flashing: Error Message
12
LED (Yellow)
Activity
FLASHING: Network traffic
13
LED (Green)
Link
SOLID:
XPress DR
has good Ethernet link
14
Connector (RJ45)
Ethernet port
RJ45 connector for Ethernet 10BaseT
15
Connector (RJ45)
Serial port
RJ45 connector for RS-232,RS-422/485
16
LED (Yellow)
Serial TXD
FLASHING: Indicates transmission
from the serial port
17
LED (Yellow)
Serial RXD
FLASHING: Indicates reception
to the serial port
18
Switch
Switch for
screw block
UP: Serial RS-232
DOWN: Serial RS-422/485
19
Screw terminal
DC + (or AC)
Operating power, DC positive or AC
20
Screw terminal
Ground
Earth ground
21
Screw terminal
DC – (or AC)
Operating power, DC negative or AC
22
Screw terminal
Ground
Earth ground
Note:
For RS-485 2-wire functionality, pins 1 & 4 and 2 & 3 of the screw terminals must be
connected together.
1-12
DSTni-XPress DR User Guide