Rockwell Automation 1747-DSN DISTRIBUTED I/O SCANNER - Manual (Page 10)

Chapter 1
Introduction
1–3
The DIO Scanner is featured below.
SCANNER
SN
DIO Link
Connector
Chassis Ground
Terminal
COMM LED
FAULT LED
SCANNER
Cable Tie
LEDs
Two LEDs are provided to monitor scanner and communications status.
FAULT LED – used to monitor scanner status. Its normal state is off. The
FAULT LED is off whenever the scanner is operating properly.
COMM LED – used to monitor communications with the I/O blocks. Its
normal state is solid green. The COMM LED status information is valid only
when the FAULT LED is off.
DIO Link Connector
This three pin male connector connects the scanner to the DIO Link. The
Allen–Bradley repair part number is W22112–046–03.
Chassis Ground Terminal
The chassis ground terminal provides a convenient location for grounding the
DIO cable shield. The cable shield should be connected to chassis ground at
one point on the DIO Link.
DIO Scanner Features