Lantronix XPress DR User Manual

C: Connections and Pinouts
XPress™ DR Industrial Device Server User Guide 88
Table C-4 Front Panel Components
Item
Component
Name
Purpose
1
Screw terminal RXD or RX- RS-232: RXD (Received Data)
RS-422/485:RX- (Received Data -)
2
Screw terminal
CTS or RX+
RS-232: CTS (Clear to Send)
RS-422/485: RX+ (Received Data +)
3
Screw terminal RTS or TX+ RS-232: RTS (Request to Send)
RS-422/485: TX+ (Transmit Data +)
4
Screw terminal
TXD or TX-
RS-232: TXD (Transmit Data)
RS-422/485: TX- (Transmit Data -)
6, 7
Screw terminal
NC
No connection
5, 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.

Lantronix XPress DR Specifications

General

Brand	Lantronix
Model	XPress DR
Category	Server
Language	English