Power-Up Diagnostics; Module Status; Network Status - Allen-Bradley CompactBlock LDX 1790D-T4T0 User Manual

Power-up Diagnostics

Power-up diagnostics includes module status and network status.

Module Status

At module power-up, a series of internal diagnostic tests are performed.
These diagnostic tests must be successfully completed. The following
table shows module status LED indictor operation.
Table 4.1
1790D-4T0/T4T0, 1790P-4T0
LED Indicator: Status:
Module Status Solid Red
Flashing Red
Solid Green
Flashing Green
Off

Network Status

The network status LED indicator shows the condition of the network
connection. The following tables show network status LED indicator
operation.
Table 4.2 1790D-4T0/T4T0 LED Descriptions
LED Indicator Status
Network Status Solid Red
Flashing Red
Solid Green
Flashing Green
Off
Table 4.3 1790P-4T0 LED Descriptions
LED Indicator Status
Network Status Solid Green
Flashing Green
Off
AB Drives
Diagnostics and Troubleshooting
Description:
Unrecoverable fault
Recoverable fault
Normal operation - OK
Standby
No power
Description:
Unrecoverable communication fault
Recoverable communication fault
Communication path complete - OK
Communication path incomplete
Device not online or not powered
Description
Communication path complete - OK
Communication path incomplete
No power or baud rate search
Publication 1790-UM003A-EN-P
4-3