INSTALLATION
_________________________________________________________________________________________________________
2-8
SIG-00-07-11 SEPTEMBER 2012 (REVISED OCTOBER 2019)
Version No.: B.2
Table 2-2 Serial Interface Connector Pin-outs (RS232) – Top of Unit
PIN NUMBER
INPUT/OUTPUT
SIGNAL
•
1
•
I
•
Data Terminal Ready
•
2
•
I
•
Receive Data
•
3
•
O
•
Transmit Data
•
4
•
O
•
Carrier Detect
•
5
•
•
Signal Ground
•
6
•
I
•
Data Set Ready
•
7
•
O
•
Request To Send
•
8
•
I
•
Clear To Send
•
9
•
•
-
2.1.7 Ethernet Interfaces
The VIU is equipped with three standard Ethernet ports and one special Ethernet port. These
ports are described in Table 2-3.
CAUTION
ETHERNET PORTS HAVE NO SECONDARY SURGE
PROTECTION. DO NOT CONNECT TO DEVICES OUTSIDE OF
EQUIPMENT ENCLOSURE.
Table 2-3 Ethernet Port Descriptions
PORT
LOCATION
NOMENCLATURE
INTENDED USE
LED INDICATIONS
Front Panel
Laptop
Ethernet)
Use as an Ethernet interface to a
local laptop or desk top computer.
Green:
Flashing = message
activity.
Yellow:
Off = 10 MBPS bit rate
On = 100 MBPS bit rate
Top Panel
Ethernet
Port 1
Use for communication between
VIU and other Ethernet equipped
devices, such as a Wayside
Communications Module (WCM)
or other VIU units.
Green:
Flashing = message
activity.
Yellow:
Off = 10 MBPS bit rate
On = 100 MBPS bit rate