Allen-Bradley 1769-SDN User Manual

1 Publication 1769-UM009B-EN-P - May 2002
Chapter 8
Troubleshooting
The 1769-SDN scanner module is provided with LED diagnostic
indicators on its front panel. The diagnostics provided by these
indicators are described in this chapter.
Diagnostic Indicators
The first step in troubleshooting is to observe the 1769-SDN scanner
module’s LEDs and 7-segment numeric displays. The indicators
function as follows:
• The bicolor (green/red) Module Status LED indicates whether
the scanner has power and is functioning properly.
• The bicolor (green/red) Network Status LED provides
information about the DeviceNet channel communication link.
• The numeric display shows Node Address and Status Display
information. Status information precedes the node address.
For information about See page
Diagnostic Indicators 8-1
Error Codes 8-3
Allen-Bradley Drives

Allen-Bradley 1769-SDN Specifications

General

Brand	Allen-Bradley
Model	1769-SDN
Category	Control Unit
Language	English