Rockwell Automation 1790D-XXXX DeviceNet Digital Base D-Shell Module CompactBlock LDX I/O - Manual (Page 16)

16 DeviceNet Digital Base D-Shell Block CompactBlock LDX I/O
Publication 1790-IN007C-EN-P - May 2006
Interpret the LED Indicators
Read this section for information about how to interpret block LED
indicators and related procedures.
For a module status indicator that is flashing red, refer to the cable
break procedure section.
The base block has the following indicators.
• Block status
• Network status
• I/O status
Indication Probable Cause Recommended Action
Module Status
Solid Red Unrecoverable fault in base unit. Replace base block.
Flashing Red Fault in expansion unit. Replace expansion unit.
Solid Green Normal operation. None.
Off No power. Apply power to device.
Network Status
Solid Red Module node number is a duplicate of an
existing node, or network
communication issues exist. Change module node
number to an unused
address, or verify
network wiring is correct
and communication is
stable.
Flashing Red An I/O connection has timed out. Cycle power to the
module.